You searched for subject:( Inertial Measurement Unit).
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Georgia Tech
1.
Wen, Haoran.
Toward inertial-navigation-on-chip: The physics and performance scaling of multi degree-of-freedom resonant MEMS gyroscopes.
Degree: PhD, Physics, 2018, Georgia Tech
URL: http://hdl.handle.net/1853/61118 
► Gyroscopes based on microelectromechanical systems (MEMS) are micro-scale inertial sensors that measure the rotation of an object without relying on external references. Due to their…
(more)
▼ Gyroscopes based on microelectromechanical systems (MEMS) are micro-scale
inertial sensors that measure the rotation of an object without relying on external references. Due to their small size and low cost, integrated single-chip MEMS
inertial measurement units (IMUs) consisting of 3-axis gyroscopes and 3-axis accelerometers have received great success in personal electronics applications for self-sustained motion tracking. However, IMUs with robust higher performance are required by emerging applications like health informatics, robotics, industrial guidance, and indoor navigation, which are unavailable with current MEMS gyroscope technology. In addition, high-performance MEMS IMUs can be used for exploratory and scientific applications such as direction guidance for field studies in GPS-denied environments, low-cost geophysical measurements, and relativity experiments. Therefore, breakthroughs in multi-axis MEMS gyroscope technology for robust high-performance IMUs are highly desirable. Commercially available MEMS gyroscopes suffer from poor robustness due to their low-frequency design. Contrarily, high-frequency resonant gyroscope technology developed in recent years promises robust high performance with mode-matched resonant operation. While high performance is shown in various resonant yaw gyroscopes, large discrepancies are seen between the promised and delivered performance in resonant pitch and roll gyroscopes, keeping multi-axis resonant gyroscopes from high-end IMU applications and prohibiting a fully integrated single-chip IMU design based on high-frequency gyroscopes. This dissertation focuses on understanding the physical phenomena behind non-idealities in resonant MEMS gyroscopes to identify and provide solutions to the performance scaling limits, especially for resonant pitch and roll gyroscopes, as well as to provide insights into the future path toward resonant-gyroscope-based single-chip
inertial navigation systems (INSs). This work has led to novel designs and microfabrication technologies that enabled the implementation of the first high-performance single-chip timing and
inertial measurement unit (TIMU) with robust 3-axis resonant gyroscopes. In this thesis, a nano-gap slanted electrode technology was introduced and demonstrated through an advanced high aspect-ratio poly- and single-crystal silicon RIE plus wet-etching (HARPSS+) process to enable, for the first time, electrostatic quadrature error cancellation in pitch and roll gyroscopes with both in-plane (IP) and out-of-plane (OOP) degree-of-freedom (DOF), which has been the bottleneck in multi-axis resonant gyroscope technology. A novel high-frequency resonant framed-annulus pitch and roll gyroscope design with high Coriolis sensitivity was proposed and experimentally verified, incorporating the slanted electrodes and a novel nano-gap comb-drive technology to match the performance of state-of-the-art high-frequency yaw gyroscopes. The framed-annulus gyroscopes were integrated with a novel quasi-solid disk bulk acoustic wave (BAW) yaw…
Advisors/Committee Members: Ayazi, Farrokh (advisor), Raman, Chandra (committee member), First, Phillip N. (committee member), Hesketh, Peter J. (committee member), Sponberg, Simon (committee member).
Subjects/Keywords: MEMS gyroscope; Inertial measurement unit
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APA (6th Edition):
Wen, H. (2018). Toward inertial-navigation-on-chip: The physics and performance scaling of multi degree-of-freedom resonant MEMS gyroscopes. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/61118
Chicago Manual of Style (16th Edition):
Wen, Haoran. “Toward inertial-navigation-on-chip: The physics and performance scaling of multi degree-of-freedom resonant MEMS gyroscopes.” 2018. Doctoral Dissertation, Georgia Tech. Accessed April 14, 2021.
http://hdl.handle.net/1853/61118.
MLA Handbook (7th Edition):
Wen, Haoran. “Toward inertial-navigation-on-chip: The physics and performance scaling of multi degree-of-freedom resonant MEMS gyroscopes.” 2018. Web. 14 Apr 2021.
Vancouver:
Wen H. Toward inertial-navigation-on-chip: The physics and performance scaling of multi degree-of-freedom resonant MEMS gyroscopes. [Internet] [Doctoral dissertation]. Georgia Tech; 2018. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/1853/61118.
Council of Science Editors:
Wen H. Toward inertial-navigation-on-chip: The physics and performance scaling of multi degree-of-freedom resonant MEMS gyroscopes. [Doctoral Dissertation]. Georgia Tech; 2018. Available from: http://hdl.handle.net/1853/61118
University of Utah
2.
Johnson, Avery Steven.
Development and testing of a gait estimation system.
Degree: MS, Mechanical Engineering, 2013, University of Utah
URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2285/rec/686
► Computing and data acquisition have become an integral part of everyday life. From reading emails on cell phones to kids playing with motion sensing game…
(more)
▼ Computing and data acquisition have become an integral part of everyday life. From reading emails on cell phones to kids playing with motion sensing game consoles, we are surrounded with sensors and mobile computing devices. As the availability of powerful computing devices increases, applications in previously limited environments become possible.Training devices in rehabilitation are becoming increasingly common and more mobile. Community based rehabilitative devices are emerging that embrace these mobile advances. To further the flexibility of devices used in rehabilitation, research has explored the use of smartphones as a means to process data and provide feedback to the user. In combination with sensor embedded insoles, smartphones provide a powerful tool for the clinician in gathering data and as a standalone training tool in rehabilitation.This thesis presents the continuing research of sensor based insoles, feedback systems and increasing the capabilities of the Adaptive Real-Time Instrumentation System for Tread Imbalance Correction, or ARTISTIC, with the introduction of ARTISTIC 2.0. To increase the capabilities of the ARTISTIC an Inertial Measurement Unit (IMU) was added, which gave the system the ability to quantify the motion of the gait cycle and, more specifically, determine stride length.The number of sensors in the insole was increased from two to ten, as well as placing the microprocessor and a vibratory motor in the insole. The transmission box weight was reduced by over 50 percent and the volume by over 60 percent. Stride length was validated against a motion capture system and found the average stride length to be within 2.7 ± 6.9 percent. To continue the improvement of the ARTISTIC 2.0, future work will include implementing real-time stride length feedback.
Subjects/Keywords: feedback; gait; inertial measurement unit; insole; mobile
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APA (6th Edition):
Johnson, A. S. (2013). Development and testing of a gait estimation system. (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2285/rec/686
Chicago Manual of Style (16th Edition):
Johnson, Avery Steven. “Development and testing of a gait estimation system.” 2013. Masters Thesis, University of Utah. Accessed April 14, 2021.
http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2285/rec/686.
MLA Handbook (7th Edition):
Johnson, Avery Steven. “Development and testing of a gait estimation system.” 2013. Web. 14 Apr 2021.
Vancouver:
Johnson AS. Development and testing of a gait estimation system. [Internet] [Masters thesis]. University of Utah; 2013. [cited 2021 Apr 14].
Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2285/rec/686.
Council of Science Editors:
Johnson AS. Development and testing of a gait estimation system. [Masters Thesis]. University of Utah; 2013. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/2285/rec/686
Delft University of Technology
3.
Stam, J. (author).
Accuracy Assesment of direct sensor orientation in UAV Photogrammetry.
Degree: 2011, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:ff977688-ead7-4c1a-b595-49e7626089bf
► With the advent of Unmanned Aerial Vehicles, it becomes possible to use these vehicles to acquire photogrammetric images in a more cheap and flexible way…
(more)
▼ With the advent of Unmanned Aerial Vehicles, it becomes possible to use these vehicles to acquire photogrammetric images in a more cheap and flexible way compared with conventional photogrammetry from a full-sized airplane. A big factor in costs and resources in conventional photogrammetry is signalling and measuring ground control points, which are necessary to determine the location and attitude of the photos. Eliminating the need for ground control points would make the photogrammetric process much less costly and labour intensive. A UAV contains navigational sensors (a GPS receiver and a Inertial Measurement Unit) for it's own navigation. The output of these sensors can also be used for the orientation of the photographs. However, the accuracy of these sensors, especially low cost off-the-shelf sensors, is limited. This thesis concentrates on determining the accuracy of low-cost navigational sensors and the effect of inaccuracies in these sensors on the result of the photogrammetric product: a Digital Terrain Model. Using a UAV developed by the company Heering UAS, founded by Pieter Wijkstra, the effects of inaccuracies in the GPS receiver and the IMU in the UAV on the outcoming Digital Elevation model has been tested. First the theoretical effects of inaccuracies of navigation sensors on the final product is investigated, using the photogrammetric collinearity equations. To validate the theoretical results, a number of tests has been carried out using an available platform with an off-the-shelf camera and dito navigation sensors. A first test, using flight data and photos taken at the unfinished A4 highway site just south of Delft, shows the sensitivity of the final model to errors in the navigational sensors. This test did not give enough data though to give enough insight in the effects of navigational sensor errors. Therefore a second test was carried out using a larger photoblock flown at the dyke of the river Lek at Ammerstol. This test showed that the errors in the terrain model caused by errors in the on-board GPS receiver follow the results of the theoretical simulation. However, because at the time, the UAV did not contain a reliable IMU, the effect of IMU errors could not be tested. So a third test was conducted, using an off-the-shelf IMU combined with a high accuracy GPS receiver to asses the effect of errors in the IMU on the resulting terrain model. The results show that off-the-shelf navigation sensors are not accurate enough to produce a reliable end result. Therefore eliminating ground control points would result in a final product which is not accurate enough. Using the available navigation sensors it is possible to reduce the amount of ground control points.
Msc Geomatics
Optical and Acoustic Remote Sensing
Aerospace Engineering
Advisors/Committee Members: Koshelham, K. (mentor).
Subjects/Keywords: UAV; photogrammetry; accuracy; GPS; Inertial Measurement Unit
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APA (6th Edition):
Stam, J. (. (2011). Accuracy Assesment of direct sensor orientation in UAV Photogrammetry. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:ff977688-ead7-4c1a-b595-49e7626089bf
Chicago Manual of Style (16th Edition):
Stam, J (author). “Accuracy Assesment of direct sensor orientation in UAV Photogrammetry.” 2011. Masters Thesis, Delft University of Technology. Accessed April 14, 2021.
http://resolver.tudelft.nl/uuid:ff977688-ead7-4c1a-b595-49e7626089bf.
MLA Handbook (7th Edition):
Stam, J (author). “Accuracy Assesment of direct sensor orientation in UAV Photogrammetry.” 2011. Web. 14 Apr 2021.
Vancouver:
Stam J(. Accuracy Assesment of direct sensor orientation in UAV Photogrammetry. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2021 Apr 14].
Available from: http://resolver.tudelft.nl/uuid:ff977688-ead7-4c1a-b595-49e7626089bf.
Council of Science Editors:
Stam J(. Accuracy Assesment of direct sensor orientation in UAV Photogrammetry. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:ff977688-ead7-4c1a-b595-49e7626089bf
California State University – Northridge
4.
Ghattas, John.
Validity of Inertial Measurement Units for Tracking Human Motion: A Systematic Review.
Degree: MS, Kinesiology, 2020, California State University – Northridge
URL: http://hdl.handle.net/10211.3/217253
► Tracking and interpreting human motion is an invaluable skill used by researches and practitioners to illuminate methods of subject improvement ranging from athletic performance to…
(more)
▼ Tracking and interpreting human motion is an invaluable skill used by researches and practitioners to illuminate methods of
subject improvement ranging from athletic performance to injury recovery or disability analysis. In today's current field, human motion is often tracked through the application of inverse kinematics in tandem with 3D motion tracking. This method of motion analysis has been shown to provide high levels of reliability and validity for respective applications such as gait analysis, or knee valgus displacement during a landing task.
More recently, some motion variables have been tracked through the use of accelerometers organized in a way to create an
inertial measurement unit (IMU). These IMUs are measuring the rate of change in velocity of specific segments on the
subject. The values are then overlaid and triangulated with different algorithms to output information such as: gate speed, joint angles or change in gate patterns. A major advantage of using such a system is the ease of access and application. These devices are often times much more affordable and accessible as well as far less intrusive than some of the 3D motion tracking methods previously discussed. This could provide researchers with a tool that could greatly improve their research collection speed and lessen
subject discomfort. The purpose of this study is to evaluate the validity of these
inertial sensor systems when being used to track human motion. If these
inertial sensor systems show a high level concurrent validity for their specific applications, they could greatly improve the ease and rate of research production as well as patient analysis or performance testing.
Four electronic databases were used to search for primary research pertaining to validity
inertial sensor systems. Two reviewers independently assessed the literature to determine its methodological rigor. Of 524 studies initially found amongst the 4 databases, 11 fit the criteria of this systematic review and were ultimately included in the final research. It was found that IMUs have a high level of agreement with the motion capture systems (MOCAP) in the frontal and sagittal planes, measured with root mean square error (RMSE), intraclass correlation coefficient (ICC), and Pearson's correlation (r). The transverse or rotational planes began to show large discrepancies in joint angles between the two systems, though. Furthermore, as the intensity of the task being measured increased, RMSE values for joint angles and ROM began to get much larger.
In conclusion, this review found that some IMUs showed high levels of concurrent validity when compared to currently established MOCAP devices in the field, specifically during low intensity single plane movements. As the movements increased in intensity and became more dynamic, the levels of ICC and Pearson's correlation began to fall, providing insight that the IMU device was no longer a valid measuring tool. Close interpretation is required when assessing these devices due to some RMSE values being classified as having…
Advisors/Committee Members: Jarvis, Danielle (advisor), Whiting, William (committee member).
Subjects/Keywords: Inertial measurement unit; Dissertations, Academic – CSUN – Kinesiology.
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APA ·
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APA (6th Edition):
Ghattas, J. (2020). Validity of Inertial Measurement Units for Tracking Human Motion: A Systematic Review. (Masters Thesis). California State University – Northridge. Retrieved from http://hdl.handle.net/10211.3/217253
Chicago Manual of Style (16th Edition):
Ghattas, John. “Validity of Inertial Measurement Units for Tracking Human Motion: A Systematic Review.” 2020. Masters Thesis, California State University – Northridge. Accessed April 14, 2021.
http://hdl.handle.net/10211.3/217253.
MLA Handbook (7th Edition):
Ghattas, John. “Validity of Inertial Measurement Units for Tracking Human Motion: A Systematic Review.” 2020. Web. 14 Apr 2021.
Vancouver:
Ghattas J. Validity of Inertial Measurement Units for Tracking Human Motion: A Systematic Review. [Internet] [Masters thesis]. California State University – Northridge; 2020. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/10211.3/217253.
Council of Science Editors:
Ghattas J. Validity of Inertial Measurement Units for Tracking Human Motion: A Systematic Review. [Masters Thesis]. California State University – Northridge; 2020. Available from: http://hdl.handle.net/10211.3/217253
5.
LINDH, KRISTOFFER.
Measuring air time for runners in real time
.
Degree: Chalmers tekniska högskola / Institutionen för data och informationsteknik, 2020, Chalmers University of Technology
URL: http://hdl.handle.net/20.500.12380/302087
► Running has always been a popular way to exercise and one way to improve the running technique and prevent injury is to adjust the gait.…
(more)
▼ Running has always been a popular way to exercise and one way to improve the
running technique and prevent injury is to adjust the gait. In order to improve
the gait the runner must gain knowledge about his/her own gait. In this master’s
thesis, a system has been developed that measure the time when a runner is in the
air while running. The data about air time should be available to the runner with
such a short delay that the runner could immediately adjust the gait. The system
should also be light weight and small enough to be carried around whilst having a
low power consumption in order to minimize battery size.
The system has been developed using one microcontroller and two inertial measurement
units. A functional algorithm that can determine gait events in order to
measure air time with an accelerometer has been developed. The precision of the
system was low and needs to be adjusted in order to be useful to a runner. The
small size of the system makes it wearable and due to the low power consumption,
the system could be powered for eight hours with a small button cell battery.
Subjects/Keywords: Gait event;
Inertial measurement unit;
Microcontroller
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APA (6th Edition):
LINDH, K. (2020). Measuring air time for runners in real time
. (Thesis). Chalmers University of Technology. Retrieved from http://hdl.handle.net/20.500.12380/302087
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
LINDH, KRISTOFFER. “Measuring air time for runners in real time
.” 2020. Thesis, Chalmers University of Technology. Accessed April 14, 2021.
http://hdl.handle.net/20.500.12380/302087.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
LINDH, KRISTOFFER. “Measuring air time for runners in real time
.” 2020. Web. 14 Apr 2021.
Vancouver:
LINDH K. Measuring air time for runners in real time
. [Internet] [Thesis]. Chalmers University of Technology; 2020. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/20.500.12380/302087.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
LINDH K. Measuring air time for runners in real time
. [Thesis]. Chalmers University of Technology; 2020. Available from: http://hdl.handle.net/20.500.12380/302087
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
KTH
6.
Löfstrand, Sebastian.
Utvärdering av Movesense för användning vid biomekaniska studier.
Degree: Health Informatics and Logistics, 2019, KTH
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252802
► Det finns ett behov av att kunna nyttja ett användarvänligt system för interaktion med kroppsnära sensorer vid undervisning och forskning vid skolan för kemi,…
(more)
▼ Det finns ett behov av att kunna nyttja ett användarvänligt system för interaktion med kroppsnära sensorer vid undervisning och forskning vid skolan för kemi, bioteknologi och hälsa vid Kungliga Tekniska Högskolan. Ansvariga vid utbildningen har därför gett i uppdrag att utreda om ett specifikt sensorsystem, Movesense, kan utgöra grunden för ett användarvänligt verktyg för att kunna studera biomekaniska rörelser inom utbildning och forskning. En förstudie har genomförts för att undersöka sensorsystemets potential. En systemprototyp har utvecklats för konfiguration av sensorsystemet och hämtning av sensordata. En kvantitativ utvärdering av insamlade data från sensorsystemet och videoanalys har utförts för att fastställa om det är möjligt att utföra rörelseanalyser med hjälp av systemprototypen. Utredningen resulterade i en fungerande systemprototyp, samt slutsatsen att Movesense går att nyttja som verktyg för att studera vissa typer av rörelser. Prototypen har stor utvecklingspotential och sensorsystemet har potentiella möjligheter inom utbildning och forskning.
There is a need to be able to utilize a user-friendly system for interaction with body-worn sensors in teaching and research at the school for chemistry, biotechnology and health at the Royal Institute of Technology. Responsible persons at the program have therefore assigned a Bachelor of Science (BSc) degree project to investigate whether a specific sensor system, Movesense, can serve as a user-friendly tool for studying biomechanical movements within education and research. A preliminary study is carried out to examine the sensor system's potential. A system prototype is developed for configuring the sensor system and retrieving sensor data. A quantitative evaluation of collected data from the sensor system, and video analysis is performed to determine whether it is possible to perform motion analysis using the system prototype. The investigation resulted in a functioning system prototype, and that Movesense can be used as a tool for studying certain types of movements. The prototype has great development potential, and the sensor system has potential opportunities in education and research.
Subjects/Keywords: Inertial Measurement Unit; Movesense; Sensor; Bluetooth; Generic attributes; Inertial Measurement Unit; Movesense; Sensor; Bluetooth; Generic attributes; Software Engineering; Programvaruteknik
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APA (6th Edition):
Löfstrand, S. (2019). Utvärdering av Movesense för användning vid biomekaniska studier. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252802
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Löfstrand, Sebastian. “Utvärdering av Movesense för användning vid biomekaniska studier.” 2019. Thesis, KTH. Accessed April 14, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252802.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Löfstrand, Sebastian. “Utvärdering av Movesense för användning vid biomekaniska studier.” 2019. Web. 14 Apr 2021.
Vancouver:
Löfstrand S. Utvärdering av Movesense för användning vid biomekaniska studier. [Internet] [Thesis]. KTH; 2019. [cited 2021 Apr 14].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252802.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Löfstrand S. Utvärdering av Movesense för användning vid biomekaniska studier. [Thesis]. KTH; 2019. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252802
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
7.
Kelly, James Paul.
The development of multi-range inertial measurement units.
Degree: MS, Aerospace Engineering, 2014, Mississippi State University
URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07032014-113527/
;
► There exist numerous commercial six-degree-of-freedom inertial measurement units capable of measuring low-range accelerations and rotation rates. A commercially available multi-range IMU capable of measuring…
(more)
▼ There exist numerous commercial six-degree-of-freedom
inertial measurement units capable of measuring low-range accelerations and rotation rates. A commercially available multi-range IMU capable of measuring low and high-range motions does not exist. An IMU with this capability was developed for measuring trajectory data of projectiles such as high-powered rockets. This data can be used to provide performance feedback to projectile designers and users.
A small footprint printed circuit board was designed to minimize the overall size of the
unit, compared to perf-board prototypes. Several PCB design guidelines were closely followed to reduce electrical interference in digital/analog components and traces. Embedded C code was developed to control the IMU. The
unit features a wireless user interface, providing several control options, including an option to download data sampled at 1KHz per sweep of all twelve sensor channels. Preliminary testing reveals good consistency among the high and low-range sensors and acceptably low noise levels.
Advisors/Committee Members: Yang Cheng (committee member), Gregory D. Olsen (committee member), Keith Koenig (chair).
Subjects/Keywords: IMU; inertial measurement unit
…ℎ𝑖𝑔ℎ𝑟𝑎𝑡𝑒 𝑎𝑐𝑐𝑒𝑙𝑒𝑟𝑜𝑚𝑒𝑡𝑒𝑟 𝑟𝑒𝑎𝑑𝑖𝑛𝑔
viii
INTRODUCTION
An inertial measurement… …rotation and linear acceleration using accelerometers and
gyroscopes. Inertial measurement units… …and reducing injury potential [2]. Inertial measurement
units have also been used… …range and high-range inertial measurement sensors that are capable of
measuring high and low… …unit (IMU) can be defined as an electro-mechanical
device used to measure angular…
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APA (6th Edition):
Kelly, J. P. (2014). The development of multi-range inertial measurement units. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-07032014-113527/ ;
Chicago Manual of Style (16th Edition):
Kelly, James Paul. “The development of multi-range inertial measurement units.” 2014. Masters Thesis, Mississippi State University. Accessed April 14, 2021.
http://sun.library.msstate.edu/ETD-db/theses/available/etd-07032014-113527/ ;.
MLA Handbook (7th Edition):
Kelly, James Paul. “The development of multi-range inertial measurement units.” 2014. Web. 14 Apr 2021.
Vancouver:
Kelly JP. The development of multi-range inertial measurement units. [Internet] [Masters thesis]. Mississippi State University; 2014. [cited 2021 Apr 14].
Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07032014-113527/ ;.
Council of Science Editors:
Kelly JP. The development of multi-range inertial measurement units. [Masters Thesis]. Mississippi State University; 2014. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-07032014-113527/ ;
University of Michigan
8.
Vitali, Rachel.
Advancing Inertial Measurement Unit Technology for Human Biomechanics and Engineering Education.
Degree: PhD, Mechanical Engineering, 2019, University of Michigan
URL: http://hdl.handle.net/2027.42/153341
► Inertial measurement units (IMUs) are a ubiquitous technology found in navigation systems, mobile devices, and multiple products related to the Internet of Things. In its…
(more)
▼ Inertial measurement units (IMUs) are a ubiquitous technology found in navigation systems, mobile devices, and multiple products related to the Internet of Things. In its simplest form, an IMU contains a triaxial accelerometer and a triaxial angular rate gyroscope needed to deduce the six degrees of freedom of a rigid body. While their history traces back to navigation systems of aircraft, spacecraft, and satellites, IMUs now support new and innovative applications made possible through miniaturization via microelectromechanical systems (MEMS) fabrication methods.
This thesis specifically advances the use of IMU technology within two important fields, namely, 1) human biomechanics and 2) engineering education.
Within the field of human biomechanics, this thesis makes two major contributions for using IMUs to quantify and understand human performance. The first deploys a pair of thigh- and shank-mounted IMUs to estimate the three-dimensional rotations across the human knee. This significant challenge requires a sequence of estimations that define: 1) the orientation of the IMU frames relative to their independent world frames, 2) the orientation of their independent world frames relative to each other, and 3) the orientation of the IMU frames relative to their respective body segment anatomical frames. Importantly, this thesis contributes a
measurement theory to correct for the inevitable integration drift error arising in this sequence of estimates without reliance on magnetometer data. The theory exploits an anatomical kinematic constraint that the knee acts (predominantly) as a hinge. The resulting theory is first validated against data from high precision optical encoders embedded within a mechanical linkage and yields RMS differences of less than 5 degrees. The theory is further validated against data from conventional optical motion capture on human subjects (and across increasingly dynamic tasks) and yields overall RMS differences of less than 5 degrees. The second contribution leverages thigh- and upper arm-mounted IMUs to define novel metrics of human crawling performance and technique to support the evaluation of warfighters. Performance metrics derived from the raw IMU data successfully distinguish superior from inferior crawling performance and the degradations in performance from added body-borne loads.
Within the field of engineering education research, this thesis contributes a thorough investigation of an active learning intervention that employs IMUs to explore concepts in an introductory engineering dynamic course (ME240 at the University of Michigan). The intervention takes three forms that elicit increasing cognitive engagement per Chi's ICAP framework, namely: 1) Demonstrations, 2) Prescribed Experiments, and 3) Student Projects. Building from a foundation of supporting literature and learning theories, this research tests the hypothesis that students who engage with the active learning IMU intervention will demonstrate positive responses in 1) conceptual understanding, 2) self-efficacy, and 3)…
Advisors/Committee Members: Finelli, Cindy (committee member), Perkins, Noel C (committee member), Ashton-Miller, James A (committee member), McGinnis, Ryan (committee member), Sienko, Kathleen Helen (committee member).
Subjects/Keywords: human biomechanics; engineering education; inertial measurement unit; Mechanical Engineering; Engineering
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APA (6th Edition):
Vitali, R. (2019). Advancing Inertial Measurement Unit Technology for Human Biomechanics and Engineering Education. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/153341
Chicago Manual of Style (16th Edition):
Vitali, Rachel. “Advancing Inertial Measurement Unit Technology for Human Biomechanics and Engineering Education.” 2019. Doctoral Dissertation, University of Michigan. Accessed April 14, 2021.
http://hdl.handle.net/2027.42/153341.
MLA Handbook (7th Edition):
Vitali, Rachel. “Advancing Inertial Measurement Unit Technology for Human Biomechanics and Engineering Education.” 2019. Web. 14 Apr 2021.
Vancouver:
Vitali R. Advancing Inertial Measurement Unit Technology for Human Biomechanics and Engineering Education. [Internet] [Doctoral dissertation]. University of Michigan; 2019. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/2027.42/153341.
Council of Science Editors:
Vitali R. Advancing Inertial Measurement Unit Technology for Human Biomechanics and Engineering Education. [Doctoral Dissertation]. University of Michigan; 2019. Available from: http://hdl.handle.net/2027.42/153341
Delft University of Technology
9.
Wilmes, Erik (author).
Measuring Changes in Hamstring Contractile Strength and Lower Body Sprinting Kinematics During A Simulated Soccer Match.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:382ca72f-3fe5-4672-956d-87d72563b122
► Background - Hamstring strain injuries (HSI’s) in soccer occur most frequently during the latter stages of each half. Neuromuscular fatigue (NMF) may induce changes in…
(more)
▼ Background - Hamstring strain injuries (HSI’s) in soccer occur most frequently during the latter stages of each half. Neuromuscular fatigue (NMF) may induce changes in hamstring contractile strength and sprinting technique, which are potential causes for the observed increase in HSI risk during each half.Objectives - The aim of this study was to examine the effects of soccer specific fatigue on hamstring maximal voluntary torque (MVT), hamstring rate of torque development (RTD), and alterations in sprinting technique. Moreover, the possibilities to detect alterations in sprinting technique as potential markers for increased HSI risk were explored using inertial measurement units (IMU’s).Methods - Ten amateur soccer players executed a 90-minute soccer match simulation. Before and after each 15-minute segment hamstring MVT (Nm), hamstring neuromuscular activity (%EMGmax), hamstring RTD (Nm.s), and sprint performance and technique were assessed. Sprinting kinematic data was obtained using IMU’s. Repeated measurement ANOVAS were used to assess changes in hamstring contractile properties, sprint performance, and sprinting kinematics. Repeated measurement correlation was used to assess common within subject associations between hamstring MVT, sprint performance and sprinting kinematics.Results - Significant time dependent reductions in hamstring MVT (푃 < 0.01), corresponding hamstring EMG activity (푃 < 0.01), and sprint performance (푃 < 0.01) were observed. Significant positive within subject repeated measurement correlations were observed between hamstring MVT and knee angle at peak knee extension in the final part of the swing phase (푃 < 0.05), between hamstring MVT and hip angle at peak hip flexion (푃 < 0.01), and between hamstring MVT and peak hip flexion velocity (푃 < 0.01).Conclusions - The findings of present study suggest that the capacity of the hamstrings to decelerate the lower limb in sprint running is limited during soccer-specific NMF, resulting in greater peak knee extension during the terminal swing phase. As a consequence, the risk of excessive hamstring strain, and thus HSI risk, may be elevated. Moreover, present results show that IMU’s can be used to detect NMF-induced changes in sprinting technique as potential markers for increased HSI risk.
Biomechanical Engineering
Advisors/Committee Members: van der Helm, Frans (mentor), Delft University of Technology (degree granting institution).
Subjects/Keywords: Soccer; Neuromuscular fatigue; Hamstrings; Injury; Inertial Measurement Unit
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APA (6th Edition):
Wilmes, E. (. (2019). Measuring Changes in Hamstring Contractile Strength and Lower Body Sprinting Kinematics During A Simulated Soccer Match. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:382ca72f-3fe5-4672-956d-87d72563b122
Chicago Manual of Style (16th Edition):
Wilmes, Erik (author). “Measuring Changes in Hamstring Contractile Strength and Lower Body Sprinting Kinematics During A Simulated Soccer Match.” 2019. Masters Thesis, Delft University of Technology. Accessed April 14, 2021.
http://resolver.tudelft.nl/uuid:382ca72f-3fe5-4672-956d-87d72563b122.
MLA Handbook (7th Edition):
Wilmes, Erik (author). “Measuring Changes in Hamstring Contractile Strength and Lower Body Sprinting Kinematics During A Simulated Soccer Match.” 2019. Web. 14 Apr 2021.
Vancouver:
Wilmes E(. Measuring Changes in Hamstring Contractile Strength and Lower Body Sprinting Kinematics During A Simulated Soccer Match. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Apr 14].
Available from: http://resolver.tudelft.nl/uuid:382ca72f-3fe5-4672-956d-87d72563b122.
Council of Science Editors:
Wilmes E(. Measuring Changes in Hamstring Contractile Strength and Lower Body Sprinting Kinematics During A Simulated Soccer Match. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:382ca72f-3fe5-4672-956d-87d72563b122
Delft University of Technology
10.
Vinasithamby, Suman (author).
Smart Sensor Shorts: Prevention of hamstring injuries in professional and recreational football athletes by analyzing and monitoring kinematic data.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:a4edd8eb-f2d2-4b1b-a039-eb4b315ca56b
► Multiple studies indicated that the degree of muscle strain is the most relevant parameter in understanding the injury mechanism behind a hamstring strain injury. To…
(more)
▼ Multiple studies indicated that the degree of muscle strain is the most relevant parameter in understanding the injury mechanism behind a hamstring strain injury. To monitor this parameter a new system is developed; the Smart Sensor Shorts. The system contains five Inertial Measurement Units (IMUs) integrated in a sports tights. The purpose of this study was to develop a methodology to estimate the muscle strain and muscle elongation velocity of the biceps femoris (BF), semimembranosus (SM) and the semitendinosus (ST) muscle in professional and recreational football athletes with the use of IMUs during different football specific movements and during different intensities. When comparing different movements and intensities, the greatest peak muscle strain was found in the BF and the lowest peak muscle strain was found in the SM during the majority of the movements. The biomechanical load was different for each hamstring muscle and was different for the running based movements and other football specific movements. The BF experienced the greatest peak muscle strain (12.12 ± 0.88%) during a maximal intensity kick in the supporting leg, while the greatest peak muscle elongation velocity was observed in the ST (3.97 ± 0.47 s-1) in the kicking leg during the maximal intensity kick. The greatest biomechanical loading was during a maximal intensity kick. Finally, it was observed that the moment of peak muscle strain was different from the time period of peak muscle elongation velocity for running based movements. It is concluded that IMUs together with the developed methodology could be used in the assessment of hamstring strain injuries in professional and recreational football by analyzing and monitoring muscle strain and muscle elongation velocity.
Biomedical Engineering | Sports Engineering
Advisors/Committee Members: van der Helm, Frans (mentor), Steijlen, Annemarijn (graduation committee), Jansen, Kaspar (graduation committee), Bregman, Daan (graduation committee), Goedhart, Edwin (mentor), Delft University of Technology (degree granting institution).
Subjects/Keywords: Injury prevention; Inertial Measurement Unit; biomechanics; football; muscle strain injury
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APA (6th Edition):
Vinasithamby, S. (. (2019). Smart Sensor Shorts: Prevention of hamstring injuries in professional and recreational football athletes by analyzing and monitoring kinematic data. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:a4edd8eb-f2d2-4b1b-a039-eb4b315ca56b
Chicago Manual of Style (16th Edition):
Vinasithamby, Suman (author). “Smart Sensor Shorts: Prevention of hamstring injuries in professional and recreational football athletes by analyzing and monitoring kinematic data.” 2019. Masters Thesis, Delft University of Technology. Accessed April 14, 2021.
http://resolver.tudelft.nl/uuid:a4edd8eb-f2d2-4b1b-a039-eb4b315ca56b.
MLA Handbook (7th Edition):
Vinasithamby, Suman (author). “Smart Sensor Shorts: Prevention of hamstring injuries in professional and recreational football athletes by analyzing and monitoring kinematic data.” 2019. Web. 14 Apr 2021.
Vancouver:
Vinasithamby S(. Smart Sensor Shorts: Prevention of hamstring injuries in professional and recreational football athletes by analyzing and monitoring kinematic data. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Apr 14].
Available from: http://resolver.tudelft.nl/uuid:a4edd8eb-f2d2-4b1b-a039-eb4b315ca56b.
Council of Science Editors:
Vinasithamby S(. Smart Sensor Shorts: Prevention of hamstring injuries in professional and recreational football athletes by analyzing and monitoring kinematic data. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:a4edd8eb-f2d2-4b1b-a039-eb4b315ca56b
Delft University of Technology
11.
Dinkelberg, Timo (author).
The discriminating factors of winning and losing in elite wheelchair tennis.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:6d7d3646-0502-4631-b21c-d2e280402485
► Technology is being used more and more to aid elite athletes in improving their performance. Recently there have been promising developments in the research using…
(more)
▼ Technology is being used more and more to aid elite athletes in improving their performance. Recently there have been promising developments in the research using IMUs regarding wheelchair rugby and basketball. Applying this same measurement setup to wheelchair tennis could give better insight in the wheelchair mobility of wheelchair tennis athletes. This knowledge could aid the athletes in causing less sport related injuries, altering the focus of their training or even training entirely new aspects of the sport. This is why this research will be answering the research question: “What is/are the most influential factor(s) regarding the mobility of wheelchair tennis athletes to discriminate between the winning and losing player?”. We define the wheelchair mobility performance as all the measurable parameters related to the movements of the athlete. These mainly consist of the velocities and accelerations reached by the athletes. The measurements resulted in three different ways to output variables. Match statistics, these include information about the distance travelled, turns made and points played during the match. This was chosen to give general insight into the match. The wheelchair mobility performance (WMP), shows information about the velocities and accelerations during the match. This was chosen to compare the velocities and accelerations of athletes, they are plotted against the average value of the entire database of all measurements, this will be a standardized baseline to compare the results to. Lastly the speed zone plots, the plots give an indication of how long the athlete has been driving within a certain velocity range. To give better insight in the dynamic of the match all outputs also includes the constraints of winning/losing and serving/receiving. It is therefore possible to compare the differences between won and lost points and served and received points. There was also experimented with the possibility of making a plot that shows the location of the athlete on the field as a heatmap. However, because the IMUs only record accelerations the cumulative error to distance had to be manually adjusted for, therefore this was only done for one match as a pilot case. The match statistics, WMP plots and speed zone plots showed no significant differences between winning and losing points. Therefore, this study found that the mobility performance has no deciding effect on the outcome of a tennis match. The technique used to hit the ball and place it on the right spot in the field will probably be the determining factor here. This said, the mobility does however have to be above a certain threshold for the player to compete at a certain level of play, so neglecting it completely is not recommended, however the focus should be on the technique that involves hitting the ball. The heatmap case shows that the winning player plays more aggressive, but whether he is playing aggressive because he is winning or winning because he is playing aggressive cannot be concluded by this research.
Mechanical engineering
Advisors/Committee Members: Bregman, Daan (mentor), Veeger, DirkJan (graduation committee), Huysmans, Toon (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Wheelchair; Tennis; Sport; Data analysis; Inertial Measurement Unit
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APA (6th Edition):
Dinkelberg, T. (. (2019). The discriminating factors of winning and losing in elite wheelchair tennis. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:6d7d3646-0502-4631-b21c-d2e280402485
Chicago Manual of Style (16th Edition):
Dinkelberg, Timo (author). “The discriminating factors of winning and losing in elite wheelchair tennis.” 2019. Masters Thesis, Delft University of Technology. Accessed April 14, 2021.
http://resolver.tudelft.nl/uuid:6d7d3646-0502-4631-b21c-d2e280402485.
MLA Handbook (7th Edition):
Dinkelberg, Timo (author). “The discriminating factors of winning and losing in elite wheelchair tennis.” 2019. Web. 14 Apr 2021.
Vancouver:
Dinkelberg T(. The discriminating factors of winning and losing in elite wheelchair tennis. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Apr 14].
Available from: http://resolver.tudelft.nl/uuid:6d7d3646-0502-4631-b21c-d2e280402485.
Council of Science Editors:
Dinkelberg T(. The discriminating factors of winning and losing in elite wheelchair tennis. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:6d7d3646-0502-4631-b21c-d2e280402485
Delft University of Technology
12.
Liu, Xinyu (author).
Tennis Stroke Recognition: Stroke classification using inertial measuring unit and machine learning algorithm in Tennis.
Degree: 2020, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:e65dbbba-def2-4ca1-9744-738c3285610c
► One interesting part of the application of human activity recognition is sports motion recognition and classification. In recent years, many commercial wearable devices have been…
(more)
▼ One interesting part of the application of human activity recognition is sports motion recognition and classification. In recent years, many commercial wearable devices have been used for recording and supervising motion data information during sports. However, their claimed high-accuracy results but motion recognition and classification method have not been proven. This thesis project presents work special related to tennis stroke detection and classification. An automated and comprehensive tennis stroke recognition and classification method based on the inertial measuring unit sensor (accelerometer and gyroscope) and machine learning algorithm (Support vector machines) was proposed in this study. Seven tennis players with a different level of tennis skills were tested and recorded using a self-made IMU sensor system with four sensors (forearm, upper arm, trunk, and pelvis). Video footage from Playsight was manually notated as the golden standard for stroke type identification. SVMs was constructed to train the classification model to classify true shots to eight types of tennis strokes from the IMU signals. Across leave-one-out seven-fold cross-validation, the SVMs classification models were trained with data from a single IMU sensor on the forearm and upper arm with the prediction accuracies of 0.69 and 0.70 respectively. And further, both SVMs models were trained by enlarged training data, resulting in improved prediction accuracies of 0.75 and 0.77. Noticeably, the best prediction accuracy was achieved by training the SVMs classification model with fused data from the previous two sensors and with the enlarged training data. The final prediction result was 0.79. Even though there exist deficiencies such as skill level different of subjects, insufficient training datasets which may lead the results of validation and prediction less credible, the IMU sensor and SVMs machine learning algorithm still played well in the tennis stroke classification task. And we expect to have better accuracy results by feeding enough training data and using data-fusion combination of different IMU sensors to the upper extremity to SVMs classification model in future work.
Biomechanical Engineering
Advisors/Committee Members: Veeger, DirkJan (mentor), van Trigt, Bart (graduation committee), Söhl, Jakob (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Inertial Measurement Unit; Activity Recognition; Machine Learning; Support Vector Machines
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APA (6th Edition):
Liu, X. (. (2020). Tennis Stroke Recognition: Stroke classification using inertial measuring unit and machine learning algorithm in Tennis. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:e65dbbba-def2-4ca1-9744-738c3285610c
Chicago Manual of Style (16th Edition):
Liu, Xinyu (author). “Tennis Stroke Recognition: Stroke classification using inertial measuring unit and machine learning algorithm in Tennis.” 2020. Masters Thesis, Delft University of Technology. Accessed April 14, 2021.
http://resolver.tudelft.nl/uuid:e65dbbba-def2-4ca1-9744-738c3285610c.
MLA Handbook (7th Edition):
Liu, Xinyu (author). “Tennis Stroke Recognition: Stroke classification using inertial measuring unit and machine learning algorithm in Tennis.” 2020. Web. 14 Apr 2021.
Vancouver:
Liu X(. Tennis Stroke Recognition: Stroke classification using inertial measuring unit and machine learning algorithm in Tennis. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Apr 14].
Available from: http://resolver.tudelft.nl/uuid:e65dbbba-def2-4ca1-9744-738c3285610c.
Council of Science Editors:
Liu X(. Tennis Stroke Recognition: Stroke classification using inertial measuring unit and machine learning algorithm in Tennis. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:e65dbbba-def2-4ca1-9744-738c3285610c
The Ohio State University
13.
Ozyalcin, Anil E.
SOLITONS: A COMPACT, LOW-COST, AND WIRELESS BODY MOTION
CAPTURE SYSTEM.
Degree: MS, Electrical and Computer Engineering, 2015, The Ohio State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1437440750
► This thesis introduces the Solitons, which are low-cost, compact, and wireless human body motion capture sensors. They utilize microelectromechanical (MEMS) inertial measurement units (IMU) to…
(more)
▼ This thesis introduces the Solitons, which are
low-cost, compact, and wireless human body motion capture sensors.
They utilize microelectromechanical (MEMS)
inertial measurement
units (IMU) to measure orientation of human body parts. Each
Soliton is only slightly larger than a US quarter (29 mm diameter),
and can run for up to 6 hours on one battery charge. The sensors
are worn by the human
subject, and are placed on certain links
between the joints on the subject’s body. Each Soliton sends the
subject’s limb’s orientation data wirelessly using ANT protocol to
a Soliton Station, which is a gateway for all data that is
transmitted between the Solitons and the PC client. Soliton Station
connects to a PC over a USB connection, and relays the wirelessly
received data to the PC client over a serial connection. The PC can
then use a forward kinematics model to translate limb orientation
to limb position. They were specifically designed to be compact and
low-weight enough to be worn by infants with muscular disorders, so
they can be used to capture motion on infants, as well as adults.
Soliton Reach is also introduced, which is a regular Soliton
equipped with both Bluetooth Low Energy and ANT modules. Soliton
Reach is designed to interface with mobile devices to provide human
motion data to mobile device applications.
Advisors/Committee Members: Lee, Robert (Advisor).
Subjects/Keywords: Electrical Engineering; Human Body Motion Capture; Sensor Fusion; Inertial Measurement Unit
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APA (6th Edition):
Ozyalcin, A. E. (2015). SOLITONS: A COMPACT, LOW-COST, AND WIRELESS BODY MOTION
CAPTURE SYSTEM. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1437440750
Chicago Manual of Style (16th Edition):
Ozyalcin, Anil E. “SOLITONS: A COMPACT, LOW-COST, AND WIRELESS BODY MOTION
CAPTURE SYSTEM.” 2015. Masters Thesis, The Ohio State University. Accessed April 14, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1437440750.
MLA Handbook (7th Edition):
Ozyalcin, Anil E. “SOLITONS: A COMPACT, LOW-COST, AND WIRELESS BODY MOTION
CAPTURE SYSTEM.” 2015. Web. 14 Apr 2021.
Vancouver:
Ozyalcin AE. SOLITONS: A COMPACT, LOW-COST, AND WIRELESS BODY MOTION
CAPTURE SYSTEM. [Internet] [Masters thesis]. The Ohio State University; 2015. [cited 2021 Apr 14].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1437440750.
Council of Science Editors:
Ozyalcin AE. SOLITONS: A COMPACT, LOW-COST, AND WIRELESS BODY MOTION
CAPTURE SYSTEM. [Masters Thesis]. The Ohio State University; 2015. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1437440750
Colorado State University
14.
Arroyo Vera, Jose Gustavo.
Comparison of wearable measurement systems for estimating trunk postures in manual material handling, A.
Degree: MS(M.S.), Environmental and Radiological Health Sciences, 2017, Colorado State University
URL: http://hdl.handle.net/10217/185737
► Epidemiologic studies have established that awkward trunk postures during manual materials handling are associated with an increased risk of developing occupational low back disorders. With…
(more)
▼ Epidemiologic studies have established that awkward trunk postures during manual materials handling are associated with an increased risk of developing occupational low back disorders. With recent advances in motion capture technology, emerging wearable
measurement systems have been designed to quantify trunk postures for exposure assessments. Wearable
measurement systems integrate portable microelectromechanical sensors, real-time processing algorithms, and large memory capacity to effectively quantify trunk postures. Wearable
measurement systems have been available primarily as research tools, but are now quickly becoming accessible to health and safety professionals for industrial application. Although some of these systems can be highly complex and deter health and safety professionals from using them, other systems can serve as a simpler, more user-friendly alternative. These simple wearable
measurement systems are designed to be less intricate, allowing health and safety professionals to be more willing to utilize them in occupational posture assessments. Unfortunately, concerns regarding the comparability and agreement between simple and complex wearable
measurement systems for estimating trunk postures are yet to be fully addressed. Furthermore, application of wearable
measurement systems has been affected by the lack of adaptability of sensor placement to work around obstructive equipment and bulky gear workers often wear on the job. The aims of the present study were to 1) compare the Bioharness™3, a simple wearable
measurement system, to Xsens™, a complex wearable
measurement system, for estimating trunk postures during simulated manual material handling tasks and 2) to explore the effects of Xsens sensor placement on assessing trunk postures. Thirty participants wore the two systems simultaneously during simulated tasks in the laboratory that involved reaching, lifting, lowering, and pushing a load for ten minutes. Results indicated that the Bioharness 3 and Xsens systems are comparable for strictly estimating trunk postures that involved flexion and extension of 30° or less. Although limited to a short range of trunk postures, the Bioharness also exhibited moderate to strong agreement and correlations with the Xsens system for measuring key metrics commonly used in exposure assessments, including amplitude probability distribution functions and percent time spent in specific trunk posture categories or bins. The Bioharness is suggested to be an a more intuitive alternative to the Xsens system for posture analysis, but industrial use of the device should be warranted in the context of the exposure assessment goals. In addition, a single motion sensor from the Xsens system placed on the sternum yielded comparable and consistent estimates to a sensor secured on the sternum relative to a motion sensor on the sacrum. Estimates included descriptive measures of trunk flexion and extension and percent time spent in specific trunk posture categories. Using one motion sensor instead of two may serve as an…
Advisors/Committee Members: Rosecrance, John (advisor), Gilkey, David (committee member), Reiser, Raoul (committee member).
Subjects/Keywords: inertial measurement unit; wearable; manual material handling; accelerometer
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APA (6th Edition):
Arroyo Vera, J. G. (2017). Comparison of wearable measurement systems for estimating trunk postures in manual material handling, A. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/185737
Chicago Manual of Style (16th Edition):
Arroyo Vera, Jose Gustavo. “Comparison of wearable measurement systems for estimating trunk postures in manual material handling, A.” 2017. Masters Thesis, Colorado State University. Accessed April 14, 2021.
http://hdl.handle.net/10217/185737.
MLA Handbook (7th Edition):
Arroyo Vera, Jose Gustavo. “Comparison of wearable measurement systems for estimating trunk postures in manual material handling, A.” 2017. Web. 14 Apr 2021.
Vancouver:
Arroyo Vera JG. Comparison of wearable measurement systems for estimating trunk postures in manual material handling, A. [Internet] [Masters thesis]. Colorado State University; 2017. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/10217/185737.
Council of Science Editors:
Arroyo Vera JG. Comparison of wearable measurement systems for estimating trunk postures in manual material handling, A. [Masters Thesis]. Colorado State University; 2017. Available from: http://hdl.handle.net/10217/185737
University of Wisconsin – Milwaukee
15.
Morgan, Alexander Matthew.
Use of Wearable Technology to Detect and Alter Subtle Gait Asymmetries Following Anterior Cruciate Ligament Reconstruction.
Degree: PhD, Kinesiology, 2020, University of Wisconsin – Milwaukee
URL: https://dc.uwm.edu/etd/2567
► Knee osteoarthritis is a significant problem post-anterior cruciate ligament (ACL) reconstruction. Knee osteoarthritis can develop due to subtle changes in knee mechanics that affect…
(more)
▼ Knee osteoarthritis is a significant problem post-anterior cruciate ligament (ACL) reconstruction. Knee osteoarthritis can develop due to subtle changes in knee mechanics that affect loading on knee joint cartilage. Gait deficits during the loading phase have been observed up to four years post-surgery. However, changes in peak shank angular velocity have not been established long-term post-surgery. Peak shank angular velocity could be increased via an
inertial measurement unit (IMU) based-biofeedback protocol to ultimately improve knee mechanics. Therefore, the objective of this project was to understand gait characteristics one to four years post-ACL reconstruction and to examine the effect of an IMU-based biofeedback protocol. Twenty healthy participants and seven participants one to four years post-ACL reconstruction walked over-ground at 1.4 m/s while an IMU measured angular velocity of the shank and a three-dimensional motion capture system measured traditional gait kinematics and kinetics. Comparisons were made between groups and between limbs within the ACL-reconstructed group. Correlations were assessed between peak shank angular velocity traditionally measured kinematics and kinetics. Six participants in the ACL-reconstructed group then participated in a biofeedback session on a treadmill intended to increase peak shank angular velocity. Gait mechanics were assessed pre- and post-biofeedback for over-ground walking. Peak shank angular velocity was significantly decreased in both ACL-reconstructed limbs compared to the healthy group. Knee range of motion and peak internal knee extension moment, two primary risk factors for developing knee osteoarthritis in this population, did not differ from the healthy group. Hip and ankle kinematics and kinetics did differ between groups. Only knee flexion at initial contact was different between ACL-reconstructed limbs. Additionally, peak shank angular velocity was moderately correlated with knee and hip range of motion, and peak internal knee extension moment. Post-biofeedback, peak shank angular velocity increased in both limbs. Changes were primarily observed in hip mechanics and stance time, rather than at the knee. However, asymmetries were present post-biofeedback in peak shank angular velocity, knee flexion at initial contact, and peak knee flexion during the loading phase. This work demonstrates that an inexpensive and portable device can detect abnormal gait patterns long-term post-ACL reconstruction and has the potential to be used in a biofeedback protocol to alter gait parameters that may reduce the risk of knee osteoarthritis for individuals post-ACL reconstruction.
Advisors/Committee Members: Kristian M O'Connor.
Subjects/Keywords: Anterior Cruciate Ligament; Biofeedback; Inertial Measurement Unit; Knee Osteoarthritis; Biomechanics
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APA (6th Edition):
Morgan, A. M. (2020). Use of Wearable Technology to Detect and Alter Subtle Gait Asymmetries Following Anterior Cruciate Ligament Reconstruction. (Doctoral Dissertation). University of Wisconsin – Milwaukee. Retrieved from https://dc.uwm.edu/etd/2567
Chicago Manual of Style (16th Edition):
Morgan, Alexander Matthew. “Use of Wearable Technology to Detect and Alter Subtle Gait Asymmetries Following Anterior Cruciate Ligament Reconstruction.” 2020. Doctoral Dissertation, University of Wisconsin – Milwaukee. Accessed April 14, 2021.
https://dc.uwm.edu/etd/2567.
MLA Handbook (7th Edition):
Morgan, Alexander Matthew. “Use of Wearable Technology to Detect and Alter Subtle Gait Asymmetries Following Anterior Cruciate Ligament Reconstruction.” 2020. Web. 14 Apr 2021.
Vancouver:
Morgan AM. Use of Wearable Technology to Detect and Alter Subtle Gait Asymmetries Following Anterior Cruciate Ligament Reconstruction. [Internet] [Doctoral dissertation]. University of Wisconsin – Milwaukee; 2020. [cited 2021 Apr 14].
Available from: https://dc.uwm.edu/etd/2567.
Council of Science Editors:
Morgan AM. Use of Wearable Technology to Detect and Alter Subtle Gait Asymmetries Following Anterior Cruciate Ligament Reconstruction. [Doctoral Dissertation]. University of Wisconsin – Milwaukee; 2020. Available from: https://dc.uwm.edu/etd/2567
16.
Taşan, Kenan Can.
Parçacık süzgecinin ataletsel ölçüm birimi ilk yönelim probleminin çözümünde uygulanması: Application of particle filter in the initial alignment problem of inertial measurement unit.
Degree: Fen Fakültesi, 2019, University of Ankara
URL: http://hdl.handle.net/20.500.12575/68602
► Günümüzde navigasyon çözümü sunan farklı teknoloji ve yöntemleri kullanan sistemler bulunsa da karıştırılma veya aldatılma ihtimali bulunmadığı için, özellikle askeri uygulamalarda en çok güvenilen ve…
(more)
▼ Günümüzde navigasyon çözümü sunan farklı teknoloji ve yöntemleri kullanan sistemler bulunsa da karıştırılma veya aldatılma ihtimali bulunmadığı için, özellikle askeri uygulamalarda en çok güvenilen ve sıklıkla tercih edilen ataletsel navigasyon sistemleridir. Ataletsel navigasyon sistemleri, kör seyir metodu ile kullanıldığı platformun ivme ve dönü ölçümlerinin integralini alarak, hız, pozisyon ve açısal duruş bilgilerini anlık olarak hesaplamaktadırlar. Başlangıç koşullarını oluşturan ilk değerlerin doğruluğu, operasyon süresince biriken hatalar üzerinde büyük bir etkiye sahiptir. Bu sebeple sistemin hassas ve doğru bir şekilde ilklendirilmesi gerekmektedir. Tez kapsamında duruşun ilklendirilmesi için kullanılan durağan ilk hizalama algoritmaları gerçeklenmiştir. Kalman filtresi (KF), kokusuz kalman filtresi (UKF) ve parçacık filtresi (PF) kullanan algoritmalarının performansları benzetim ortamında Monte Carlo (MC) analizleri yardımıyla, laboratuvar ortamında ise test verisi üzerinden karşılaştırılmıştır. KF ile UKF kullanan algoritmaların çok benzer sonuçlar verdiği, PF kullanan algoritmaların ise bu probleme özgü olarak, donanımsal kısıtlardan dolayı daha düşük performans gösterdiği gözlenmiştir. Gerçekleştirilen 40 koşumluk MC analizleri sonucunda farklı algoritmaların kuzey yönelimini hesaplama doğruluğu ortalama karekök hata (RMS) olarak hesaplanmıştır. RMS hata değerleri KF, UKF ve PF kullanan algoritmalar için sırasıyla 1.64 milyem, 1.65 milyem ve 5.4 milyem olarak hesaplanmıştır. MC analizindeki bazı koşumlarda PF hataların daha yüksek olduğu ve bu durumun PF RMS hatasını arttırdığı gözlenmiştir. PF algoritmasında kullanılan 35 milyon parçacığın bazı koşumlarda yetersiz kaldığı değerlendirilmiştir. Gerçek verilerle yapılan testlerde ise hata değerleri KF, UKF ve PF algoritmaları için sırasıyla 0.4 milyem, 0.41 milyem ve 5.7 milyem olarak hesaplanmıştır. Durağan ilk hizalama probleminin çözümü için KF algoritması önerilmiştir.
Even though there are various systems using different technologies and methodologies that provide navigation solutions,
inertial navigation systems are the most trusted ones since they are not susceptible to jamming or spoofing. Therefore, they are still frequently preferred in the vast majority of military applications. The accuracy of the initial conditions has a critical effect on the errors accumulated during the operation. In accordance with this, the system needs to be precisely initialized. Stationary initial alignment algorithms had been implemented within the scope of the thesis. Performances of the algorithms using different estimation techniques such as Kalman Filter (KF), Unscented Kalman Filter (UKF) and Particle Filter (PF) were compared within Monte Carlo (MC) analysis in the simulation environment and the collected actual test data. It is observed that the algorithms using KF and UKF yield very similar results and the algorithms using PF, specific to this problem, show lower performance due to hardware constraints. RMS azimuth estimation errors of the different…
Advisors/Committee Members: Yılmaz, Asım Egemen (advisor).
Subjects/Keywords: Ataletsel navigasyon sistemi; Ataletsel ölçüm birimi; Hizalama algoritmaları; Inertial navigation system; Inertial measurement unit; Alignment algorithms
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APA ·
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APA (6th Edition):
Taşan, K. C. (2019). Parçacık süzgecinin ataletsel ölçüm birimi ilk yönelim probleminin çözümünde uygulanması: Application of particle filter in the initial alignment problem of inertial measurement unit. (Masters Thesis). University of Ankara. Retrieved from http://hdl.handle.net/20.500.12575/68602
Chicago Manual of Style (16th Edition):
Taşan, Kenan Can. “Parçacık süzgecinin ataletsel ölçüm birimi ilk yönelim probleminin çözümünde uygulanması: Application of particle filter in the initial alignment problem of inertial measurement unit.” 2019. Masters Thesis, University of Ankara. Accessed April 14, 2021.
http://hdl.handle.net/20.500.12575/68602.
MLA Handbook (7th Edition):
Taşan, Kenan Can. “Parçacık süzgecinin ataletsel ölçüm birimi ilk yönelim probleminin çözümünde uygulanması: Application of particle filter in the initial alignment problem of inertial measurement unit.” 2019. Web. 14 Apr 2021.
Vancouver:
Taşan KC. Parçacık süzgecinin ataletsel ölçüm birimi ilk yönelim probleminin çözümünde uygulanması: Application of particle filter in the initial alignment problem of inertial measurement unit. [Internet] [Masters thesis]. University of Ankara; 2019. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/20.500.12575/68602.
Council of Science Editors:
Taşan KC. Parçacık süzgecinin ataletsel ölçüm birimi ilk yönelim probleminin çözümünde uygulanması: Application of particle filter in the initial alignment problem of inertial measurement unit. [Masters Thesis]. University of Ankara; 2019. Available from: http://hdl.handle.net/20.500.12575/68602
17.
Efimovskaya, Alexandra.
Multi-Axis Solutions for MEMS Inertial Sensors.
Degree: Mechanical and Aerospace Engineering, 2017, University of California – Irvine
URL: http://www.escholarship.org/uc/item/95971097
► Inertial Measurement Unit (IMU) integrates three-axis gyroscopes and three-axis accelerometers to provide information about position, orientation, and trajectory. For decades, IMUs based on high-end sensors…
(more)
▼ Inertial Measurement Unit (IMU) integrates three-axis gyroscopes and three-axis accelerometers to provide information about position, orientation, and trajectory. For decades, IMUs based on high-end sensors have been widely used for navigation, flight control, and stabilization functions. Inspired by recent improvements in performance of MEMS inertial sensors, this Ph.D. dissertation explores a large-scale integration of discrete inertial sensors in a single micro chip solution, and introduces two approaches for a compact tactical-grade MEMS IMU.The first approach is based on a silicon "origami-like" MEMS fabrication process, which involves fabrication of a high density array of discrete single-axis inertial sensors and then folding the array into a 3D IMU configuration. The main contribution of this thesis isinvention and implementation of a double-sided fabrication process for foldable structures with flexible polymer hinges, integrated high-end MEMS inertial sensors, and integration of thru-wafer interconnects in the fabrication process. Dissimilar materials were explored forfabrication of the "origami-like" structures, expanding our knowledge on the use of polymers and standard bulk and surface micro-machining tools for manufacturing of 3D MEMS devices. In addition, this work investigated two tactical-grade gyroscope designs for potential integration with the introduced fabrication process: Dynamically Amplified Gyroscope (DAG) and Toroidal Ring Gyroscope (TRG). We designed, modeled, and implemented the control electronics, and experimentally demonstrated the tactical-grade performance of the DAG and TRG gyroscopes. In this dissertation, for the first time, an IMU prototype with all sensors operational was reported, demonstrating feasibility of the Folded MEMS approach for implementation of a compact tactical-grade performance system.This thesis also explored a MEMS IMU solution, utilizing a single multi-axis sensing element. We demonstrated a 3-axis roll-pitch-yaw gyroscope, a major building block of the miniaturized IMU. The mechanical structure of the gyroscope employed a single vibrationalelement with a torsional drive mode and a multi-directional sense modes. Experimental characterization of the sensor showed that it is capable of measuring an angular rate around all three orthogonal axes simultaneously with a minimal cross talk betweenaxes of sensitivity and increased immunity to external vibrations.
Subjects/Keywords: Mechanical engineering; Aerospace engineering; 3-Axis Gyroscope; 3-D MEMS; Inertial Measurement Unit; Inertial Sensors; Micro-Assembly
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APA ·
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APA (6th Edition):
Efimovskaya, A. (2017). Multi-Axis Solutions for MEMS Inertial Sensors. (Thesis). University of California – Irvine. Retrieved from http://www.escholarship.org/uc/item/95971097
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Efimovskaya, Alexandra. “Multi-Axis Solutions for MEMS Inertial Sensors.” 2017. Thesis, University of California – Irvine. Accessed April 14, 2021.
http://www.escholarship.org/uc/item/95971097.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Efimovskaya, Alexandra. “Multi-Axis Solutions for MEMS Inertial Sensors.” 2017. Web. 14 Apr 2021.
Vancouver:
Efimovskaya A. Multi-Axis Solutions for MEMS Inertial Sensors. [Internet] [Thesis]. University of California – Irvine; 2017. [cited 2021 Apr 14].
Available from: http://www.escholarship.org/uc/item/95971097.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Efimovskaya A. Multi-Axis Solutions for MEMS Inertial Sensors. [Thesis]. University of California – Irvine; 2017. Available from: http://www.escholarship.org/uc/item/95971097
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
UCLA
18.
Chang, Hua-I.
Robust and Large-scale Human Motion Estimation with Low-cost Sensors.
Degree: Electrical Engineering, 2016, UCLA
URL: http://www.escholarship.org/uc/item/55x2f6pz
► Enabling large-scale monitoring and classification of a range of motion activities is of primary importance due to the need by healthcare and fitness professionals to…
(more)
▼ Enabling large-scale monitoring and classification of a range of motion activities is of primary importance due to the need by healthcare and fitness professionals to monitor exercises for quality and compliance. Video based motion capturing systems (e.g., VICON cameras) provide a partial solution. However, these expensive and fixed systems are not suitable for patients' at-home daily motion monitoring. Wireless motion sensors, including accelerometers and gyroscopes, can provide a low-cost, small-size, and highly-mobile option. However, acquiring robust inference of human motion trajectory via low-cost inertial sensors remains challenging. Sensor noise and drift, sensor placement errors and variation of activity over the population all lead to the necessity of a large amount of data collection. Unfortunately, such a large amount of data collection is prohibitively costly. In observance of these issues, a series of solutions for robust human motion monitoring and activity classification will be presented. The implementation of a real-time context-guided activity classification system will be discussed. To facilitate ground truth data acquisition, we proposed a virtual inertial measurements platform to convert the currently available MoCap database into a noiseless and error-free inertial measurements database. An opportunistic calibration system which deals with sensor placement errors will be discussed. In addition, a sensor fusion approach for robust upper limb motion tracking will also be presented.
Subjects/Keywords: Electrical engineering; activity classification; body sensing; calibration; inertial measurement unit; sensor orientation; trajectory reconstruction
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APA ·
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APA (6th Edition):
Chang, H. (2016). Robust and Large-scale Human Motion Estimation with Low-cost Sensors. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/55x2f6pz
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chang, Hua-I. “Robust and Large-scale Human Motion Estimation with Low-cost Sensors.” 2016. Thesis, UCLA. Accessed April 14, 2021.
http://www.escholarship.org/uc/item/55x2f6pz.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chang, Hua-I. “Robust and Large-scale Human Motion Estimation with Low-cost Sensors.” 2016. Web. 14 Apr 2021.
Vancouver:
Chang H. Robust and Large-scale Human Motion Estimation with Low-cost Sensors. [Internet] [Thesis]. UCLA; 2016. [cited 2021 Apr 14].
Available from: http://www.escholarship.org/uc/item/55x2f6pz.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chang H. Robust and Large-scale Human Motion Estimation with Low-cost Sensors. [Thesis]. UCLA; 2016. Available from: http://www.escholarship.org/uc/item/55x2f6pz
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
19.
Huang, Yin-cheng.
The Effects of the Badminton TeachingâAssisted System Using Wearable Technology to Enhance University Studentsâ Learning Performance of Badminton Skills - the Case Study of Smash.
Degree: Master, Information Management, 2018, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0710118-164528
► Swinging gesture and muscle strength are two key points in learning badminton techniques that instructors provide feedback according to studentsâ body motions. However, instructor can…
(more)
▼ Swinging gesture and muscle strength are two key points in learning badminton techniques that instructors provide feedback according to studentsâ body motions. However, instructor can only provide subjective feedback on swinging gesture, not muscle strength. To effectively assist teachers to objectively teach students two badminton techniques and then enhance their badminton learning performance, we developed and evaluated a badminton teachingâassisted system using wearable technology, Myo armband. This system included three mainly functions â instantaneous recording function, automatic grading function, and instantaneous feedback function. These functions can support instructor providing objective feedback to students immediately. Automatic grading function is an expertâs motion model which was built from collection professional badminton playersâ forearm strength of swinging (i.e. electromyography (EMG) signals) and swinging actions (i.e. gyroscope signals) by Myo armband. The instantaneous feedback function can automatic provide students a feedback on their swinging gesture during their badminton practice. The results showed that the badminton teaching-assisted system can effectively monitor the learnersâ swinging gesture, although the system cannot effectively capture studentsâ arm muscle strength. The result also indicated that the instantaneous feedback function can provide reliable suggestions by combining teacherâs suggestions and expertsâ swing gesture eigenvalues. Thus, badminton teachingâassisted system using Myo armband can assist the instructor to teach students learning badminton on swinging gesture.
Advisors/Committee Members: Kuo-Chin Lin (committee member), Chen-Hui Wu (chair), Hong-Ren Chen (chair), Ya-Fei Yang (chair), Nian-Shing Chen (committee member).
Subjects/Keywords: expert model; neural network; Badminton teaching; wearable technology; electromyography; inertial measurement unit
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APA ·
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MLA ·
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Export
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Manager
APA (6th Edition):
Huang, Y. (2018). The Effects of the Badminton TeachingâAssisted System Using Wearable Technology to Enhance University Studentsâ Learning Performance of Badminton Skills - the Case Study of Smash. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0710118-164528
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Huang, Yin-cheng. “The Effects of the Badminton TeachingâAssisted System Using Wearable Technology to Enhance University Studentsâ Learning Performance of Badminton Skills - the Case Study of Smash.” 2018. Thesis, NSYSU. Accessed April 14, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0710118-164528.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Huang, Yin-cheng. “The Effects of the Badminton TeachingâAssisted System Using Wearable Technology to Enhance University Studentsâ Learning Performance of Badminton Skills - the Case Study of Smash.” 2018. Web. 14 Apr 2021.
Vancouver:
Huang Y. The Effects of the Badminton TeachingâAssisted System Using Wearable Technology to Enhance University Studentsâ Learning Performance of Badminton Skills - the Case Study of Smash. [Internet] [Thesis]. NSYSU; 2018. [cited 2021 Apr 14].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0710118-164528.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Huang Y. The Effects of the Badminton TeachingâAssisted System Using Wearable Technology to Enhance University Studentsâ Learning Performance of Badminton Skills - the Case Study of Smash. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0710118-164528
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Guelph
20.
Bray-Miners, Jordan.
Biomechanical Performance Factors of Slalom Water Skiing.
Degree: Master of Applied Science, School of Engineering, 2011, University of Guelph
URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/2878
► The instrumentation and methodology of this study provided quantitative data for a group of six advanced slalom skiers. Rope load, skier velocity, ski roll, ski…
(more)
▼ The instrumentation and methodology of this study provided quantitative data for a group of six advanced slalom skiers. Rope load, skier velocity, ski roll, ski acceleration and ski deceleration were calculated during the deep water start and cutting portion of a slalom run. Four different ski designs were tested in order to determine if the test subjects were able to achieve a different level of performance on each ski. Through a statistical analysis there was enough evidence to suggest that a different performance was achieved between the skis, for rope load and peak roll. There was also enough evidence to suggest that the skiers were achieving different overall levels of performance. The analysis procedure of this study achieved the goal of proving that it could be used to improve coaching capabilities and product design in the water ski industry.
Advisors/Committee Members: Runciman, John (advisor).
Subjects/Keywords: biomechanics; water skiing; slalom; advanced skier; inertial measurement unit; global positioning system; load transducer
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APA (6th Edition):
Bray-Miners, J. (2011). Biomechanical Performance Factors of Slalom Water Skiing. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/2878
Chicago Manual of Style (16th Edition):
Bray-Miners, Jordan. “Biomechanical Performance Factors of Slalom Water Skiing.” 2011. Masters Thesis, University of Guelph. Accessed April 14, 2021.
https://atrium.lib.uoguelph.ca/xmlui/handle/10214/2878.
MLA Handbook (7th Edition):
Bray-Miners, Jordan. “Biomechanical Performance Factors of Slalom Water Skiing.” 2011. Web. 14 Apr 2021.
Vancouver:
Bray-Miners J. Biomechanical Performance Factors of Slalom Water Skiing. [Internet] [Masters thesis]. University of Guelph; 2011. [cited 2021 Apr 14].
Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/2878.
Council of Science Editors:
Bray-Miners J. Biomechanical Performance Factors of Slalom Water Skiing. [Masters Thesis]. University of Guelph; 2011. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/2878
Brno University of Technology
21.
Jaroš, Martin.
Augmented reality applications in embedded navigation devices: Augmented reality applications in embedded navigation devices.
Degree: 2019, Brno University of Technology
URL: http://hdl.handle.net/11012/32779
► This work deals with application of augmented reality in navigation devices. It describes possibilities of video processing, rendering a virtual scene by using data measured…
(more)
▼ This work deals with application of augmented reality in navigation devices. It describes possibilities of video processing, rendering a virtual scene by using data measured by satellite and
inertial navigation subsystems. Special care is taken into account for use of modern graphic accelerator hardware available in microprocessors. Design of the application is supplemented with prototype realization.
Advisors/Committee Members: Frýza, Tomáš (advisor), Slanina, Martin (referee).
Subjects/Keywords: Rozšířená realita; satelitní navigace; inerciální měřící jednotka; Augmented reality; satellite navigation; inertial measurement unit
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APA ·
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APA (6th Edition):
Jaroš, M. (2019). Augmented reality applications in embedded navigation devices: Augmented reality applications in embedded navigation devices. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/32779
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Jaroš, Martin. “Augmented reality applications in embedded navigation devices: Augmented reality applications in embedded navigation devices.” 2019. Thesis, Brno University of Technology. Accessed April 14, 2021.
http://hdl.handle.net/11012/32779.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Jaroš, Martin. “Augmented reality applications in embedded navigation devices: Augmented reality applications in embedded navigation devices.” 2019. Web. 14 Apr 2021.
Vancouver:
Jaroš M. Augmented reality applications in embedded navigation devices: Augmented reality applications in embedded navigation devices. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/11012/32779.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Jaroš M. Augmented reality applications in embedded navigation devices: Augmented reality applications in embedded navigation devices. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/32779
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
22.
Kraus, David.
Inerciální jednotka pro mobilní robotiku: Inertial measurement unit for mobile robots.
Degree: 2018, Brno University of Technology
URL: http://hdl.handle.net/11012/13933
► Bachelor thesis Inertial measurement unit for mobile robots is focused on problem determination of position using inertial sensors. First part is reviw of available sensors…
(more)
▼ Bachelor thesis
Inertial measurement unit for mobile robots is focused on problem determination of position using
inertial sensors. First part is reviw of available sensors and methods of processing data from sensors. Second part is implementation of chosen method and sensors in simulation and use it at real HW.
Advisors/Committee Members: Vejlupek, Josef (advisor), Lamberský, Vojtěch (referee).
Subjects/Keywords: Inerciální měřící jednotka; akcelerometr; gyroskop; magnetometr; Inertial measurement unit; IMU; accelerometer; gyroscope; magnetometr
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APA (6th Edition):
Kraus, D. (2018). Inerciální jednotka pro mobilní robotiku: Inertial measurement unit for mobile robots. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/13933
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kraus, David. “Inerciální jednotka pro mobilní robotiku: Inertial measurement unit for mobile robots.” 2018. Thesis, Brno University of Technology. Accessed April 14, 2021.
http://hdl.handle.net/11012/13933.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kraus, David. “Inerciální jednotka pro mobilní robotiku: Inertial measurement unit for mobile robots.” 2018. Web. 14 Apr 2021.
Vancouver:
Kraus D. Inerciální jednotka pro mobilní robotiku: Inertial measurement unit for mobile robots. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/11012/13933.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kraus D. Inerciální jednotka pro mobilní robotiku: Inertial measurement unit for mobile robots. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/13933
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Arkansas
23.
Williams, Ethan Storm.
Design of an Assistive Technology Adaptive Switch using an Inertial Measurement Unit.
Degree: MSEE, 2016, University of Arkansas
URL: https://scholarworks.uark.edu/etd/1503
► A new assistive technology switch for people with disabilities was developed utilizing an Inertial Measurement Unit (IMU) as the sensor technology. The hardware can…
(more)
▼ A new assistive technology switch for people with disabilities was developed utilizing an
Inertial Measurement Unit (IMU) as the sensor technology. The hardware can be customized through firmware to provide custom switch activations on a person by person basis. The firmware is customized to recognize specific data features in the IMU data which identify the desired switch activation movement performed by the user. In this way, the switch can be adapted to activate based on the movements of the user. During this research, the generic hardware platform, including the IMU sensor technology and Bluetooth communications, was designed and tested. An Android application was developed to communicate with the Bluetooth enabled switch to acquire the IMU sensory data for analysis. A case study was performed to recognize thumb and pinky movements as individual switch activations. This experiment tested the feasibility of using the designed switch with an InvoTek client. A training session was performed to acquire movement data of the thumb and pinky. The acquired data was analyzed in MATLAB and a unique data feature was identified. The switch firmware was updated with the necessary algorithm to recognize and differentiate the thumb and pinky movements. Lastly, the switch was tested with 100 repetitive access movements in which the switch accurately characterized and differentiated 100% of the movements.
Advisors/Committee Members: Robert Saunders, Jingxian Wu, Jeffrey Wolchok.
Subjects/Keywords: Applied sciences; Assistive technology; Inertial measurement unit; Biomedical; VLSI and Circuits, Embedded and Hardware Systems
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APA (6th Edition):
Williams, E. S. (2016). Design of an Assistive Technology Adaptive Switch using an Inertial Measurement Unit. (Masters Thesis). University of Arkansas. Retrieved from https://scholarworks.uark.edu/etd/1503
Chicago Manual of Style (16th Edition):
Williams, Ethan Storm. “Design of an Assistive Technology Adaptive Switch using an Inertial Measurement Unit.” 2016. Masters Thesis, University of Arkansas. Accessed April 14, 2021.
https://scholarworks.uark.edu/etd/1503.
MLA Handbook (7th Edition):
Williams, Ethan Storm. “Design of an Assistive Technology Adaptive Switch using an Inertial Measurement Unit.” 2016. Web. 14 Apr 2021.
Vancouver:
Williams ES. Design of an Assistive Technology Adaptive Switch using an Inertial Measurement Unit. [Internet] [Masters thesis]. University of Arkansas; 2016. [cited 2021 Apr 14].
Available from: https://scholarworks.uark.edu/etd/1503.
Council of Science Editors:
Williams ES. Design of an Assistive Technology Adaptive Switch using an Inertial Measurement Unit. [Masters Thesis]. University of Arkansas; 2016. Available from: https://scholarworks.uark.edu/etd/1503
University of Kansas
24.
Mehyar, Fahed.
LUMBAR SPINE MOBILIZATION: MEASUREMENT AND EFFECTS.
Degree: PhD, Physical Therapy & Rehabilitation Sciences, 2017, University of Kansas
URL: http://hdl.handle.net/1808/27754
► Low Back Pain (LBP) is the second most common cause of disability in the United States, and it is associated with abnormal high activity of…
(more)
▼ Low Back Pain (LBP) is the second most common cause of disability in the United States, and it is associated with abnormal high activity of Erector Spinae (ES) and low activity of Lumbar Multifidus (LM) muscles. This abnormal activity of muscles has shown to be associated with pain and dysfunction in people with LBP. Lumbar mobilization is a common physical therapy intervention for LBP. Yet, there is a lack of knowledge about the effects of lumbar mobilization on the activity of back muscles in both healthy subjects and in people with LBP. Investigating such effect of mobilization on the activity of back muscles may lead to a better understanding of the physiological effects of mobilization, and a better application of mobilization to normalize the abnormal activity of back muscles in LBP. This may improve the intervention outcomes and decrease the disability in people with LBP. Furthermore, there is a need to measure lumbar mobilization in clinical settings due to the inconsistency in applying mobilization, which may affect the intervention outcomes. Current laboratory methods like Optotrak and force plate to measure mobilization are expensive and not portable.
Inertial Measurement Unit (IMU) is a potential device to measure the clinician’s hand movement during mobilization. IMU is inexpensive and portable. However, the validity and reliability of IMU in measuring mobilization need to be determined before its application is considered in clinical and research settings. In chapters two and three, the effect of mobilization on the activity/contraction of back muscle was investigated. Ultrasound imaging and surface electromyogram (EMG) were used to measure LM contraction and activity of ES respectively at low isometric contraction (arm lift task). In chapter two, the effect of lumbar mobilization on both LM and ES muscles in healthy subjects was investigated. Healthy subjects received three intervention sessions (no intervention, placebo, and grade IV mobilization) on different days. Contraction of LM and the EMG amplitude of ES activity were measured at two time points (before and immediately after the intervention) in each session. The only significant effect of lumbar mobilization was found on LM contraction compared to the placebo effect (the mobilization increased the LM contraction), whereas there was no significant effect of mobilization on LM contraction compared to no intervention. In chapter three, the effect of lumbar mobilization on both LM and ES muscles in people with LBP was investigated. LBP subjects were randomly assigned into two groups (grade III mobilization or placebo/light touch group). Subjects received intervention based on their assigned group and for two sessions. Contraction of LM, the activity amplitude and the activity onset of ES were measured at two time points (before and immediately after the intervention) in each session. Compared to the placebo group, there were significant effects of lumbar mobilization on the activity amplitude and the activity onset of ES, and on LM contraction.…
Advisors/Committee Members: Sharma, Neena (advisor), Wilson, Sara (cmtemember), Santos, Marcio (cmtemember), Jernigan, Stephen (cmtemember), Staggs, Vincent (cmtemember).
Subjects/Keywords: Physical therapy; Electromyography; Inertial measurement unit; Low back pain; Lumbar; Mobilization; Ultrasound
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APA (6th Edition):
Mehyar, F. (2017). LUMBAR SPINE MOBILIZATION: MEASUREMENT AND EFFECTS. (Doctoral Dissertation). University of Kansas. Retrieved from http://hdl.handle.net/1808/27754
Chicago Manual of Style (16th Edition):
Mehyar, Fahed. “LUMBAR SPINE MOBILIZATION: MEASUREMENT AND EFFECTS.” 2017. Doctoral Dissertation, University of Kansas. Accessed April 14, 2021.
http://hdl.handle.net/1808/27754.
MLA Handbook (7th Edition):
Mehyar, Fahed. “LUMBAR SPINE MOBILIZATION: MEASUREMENT AND EFFECTS.” 2017. Web. 14 Apr 2021.
Vancouver:
Mehyar F. LUMBAR SPINE MOBILIZATION: MEASUREMENT AND EFFECTS. [Internet] [Doctoral dissertation]. University of Kansas; 2017. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/1808/27754.
Council of Science Editors:
Mehyar F. LUMBAR SPINE MOBILIZATION: MEASUREMENT AND EFFECTS. [Doctoral Dissertation]. University of Kansas; 2017. Available from: http://hdl.handle.net/1808/27754
Virginia Tech
25.
Munoz, Joshua.
Application of Multifunctional Doppler LIDAR for Non-contact Track Speed, Distance, and Curvature Assessment.
Degree: PhD, Mechanical Engineering, 2015, Virginia Tech
URL: http://hdl.handle.net/10919/77876
► The primary focus of this research is evaluation of feasibility, applicability, and accuracy of Doppler Light Detection And Ranging (LIDAR) sensors as non-contact means for…
(more)
▼ The primary focus of this research is evaluation of feasibility, applicability, and accuracy of Doppler Light Detection And Ranging (LIDAR) sensors as non-contact means for measuring track speed, distance traveled, and curvature. Speed histories, currently measured with a rotary, wheel-mounted encoder, serve a number of useful purposes, one significant use involving derailment investigations. Distance calculation provides a spatial reference system for operators to locate track sections of interest. Railroad curves, using an IMU to measure curvature, are monitored to maintain track infrastructure within regulations. Speed measured with high accuracy leads to high-fidelity distance and curvature data through utilization of processor clock rate and left-and right-rail speed differentials during curve navigation, respectively. Wheel-mounted encoders, or tachometers, provide a relatively low-resolution speed profile, exhibit increased noise with increasing speed, and are
subject to the
inertial behavior of the rail car which affects output data. The IMU used to measure curvature is dependent on acceleration and yaw rate sensitivity and experiences difficulty in low-speed conditions.
Preliminary system tests onboard a 'Hy-Rail' utility vehicle capable of traveling on rail show speed capture is possible using the rails as the reference moving target and furthermore, obtaining speed profiles from both rails allows for the calculation of speed differentials in curves to estimate degrees curvature. Ground truth distance calibration and curve
measurement were also carried out. Distance calibration involved placement of spatial landmarks detected by a sensor to synchronize distance measurements as a pre-processing procedure. Curvature ground truth measurements provided a reference system to confirm
measurement results and observe alignment variation throughout a curve. Primary testing occurred onboard a track geometry rail car, measuring rail speed over substantial mileage in various weather conditions, providing high-accuracy data to further calculate distance and curvature along the test routes.
Tests results indicate the LIDAR system measures speed at higher accuracy than the encoder, absent of noise influenced by increasing speed. Distance calculation is also high in accuracy, results showing high correlation with encoder and ground truth data. Finally, curvature calculation using speed data is shown to have good correlation with IMU measurements and a resolution capable of revealing localized track alignments. Further investigations involve a curve
measurement algorithm and speed calibration method independent from external reference systems, namely encoder and ground truth data. The speed calibration results show a high correlation with speed data from the track geometry vehicle.
It is recommended that the study be extended to provide assessment of the LIDAR's sensitivity to car body motion in order to better isolate the embedded behavior in the speed and curvature profiles. Furthermore, in the interest…
Advisors/Committee Members: Ahmadian, Mehdi (committeechair), Tarazaga, Pablo Alberto (committee member), Sandu, Corina (committee member), Taheri, Saied (committee member), Ha, Dong S. (committee member).
Subjects/Keywords: LIDAR; Railroad Health Monitoring; Doppler LIDAR; Track Geometry; Encoder; Inertial Measurement Unit; GPS
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APA (6th Edition):
Munoz, J. (2015). Application of Multifunctional Doppler LIDAR for Non-contact Track Speed, Distance, and Curvature Assessment. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/77876
Chicago Manual of Style (16th Edition):
Munoz, Joshua. “Application of Multifunctional Doppler LIDAR for Non-contact Track Speed, Distance, and Curvature Assessment.” 2015. Doctoral Dissertation, Virginia Tech. Accessed April 14, 2021.
http://hdl.handle.net/10919/77876.
MLA Handbook (7th Edition):
Munoz, Joshua. “Application of Multifunctional Doppler LIDAR for Non-contact Track Speed, Distance, and Curvature Assessment.” 2015. Web. 14 Apr 2021.
Vancouver:
Munoz J. Application of Multifunctional Doppler LIDAR for Non-contact Track Speed, Distance, and Curvature Assessment. [Internet] [Doctoral dissertation]. Virginia Tech; 2015. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/10919/77876.
Council of Science Editors:
Munoz J. Application of Multifunctional Doppler LIDAR for Non-contact Track Speed, Distance, and Curvature Assessment. [Doctoral Dissertation]. Virginia Tech; 2015. Available from: http://hdl.handle.net/10919/77876
University of Texas – Austin
26.
Brown, Ryan Allen, 1977-.
Inertial solution for accurately assessing location coordinates (ISAAC).
Degree: MSin Engineering, Electrical and Computer Engineering, 2010, University of Texas – Austin
URL: http://hdl.handle.net/2152/ETD-UT-2010-05-862
► Accurately determining one’s location has long been a persistent problem in navigation and has reappeared in recent years in the field of mobile computing. The…
(more)
▼ Accurately determining one’s location has long been a persistent problem in navigation and has reappeared in recent years in the field of mobile computing. The ability to determine a device’s location indoors is needed for both automation and efficient communication in collaborative robotic and sensor networks. Technologies such as indoor GPS transmitters and Cricket have been employed, but have had limited success due to cost, accuracy, and power consumption. The
Inertial Solution for Accurately Assessing location Coordinates (ISAAC) was developed as a means of filling this need without requiring infrastructure or expensive components to accurately determine position, inside or outside.
ISAAC is based on modified six-degrees-of-freedom (6DOF) dead reckoning algorithms currently being used by Unmanned Aerial Vehicles (UAV). UAVs typically have access to other types of sensors to supplement and/or replace the IMU measurements. ISAAC was implemented using a low-cost MEMS 6DOF IMU in which the onboard firmware was modified to incorporate the dead reckoning calculations and communications necessary to realize ISAAC. ISAAC was implemented as a portable
unit which
communicated with a host computer through an RS-232 interface.
ISAAC did not perform as well as expected; the location coordinates were very inconsistent with device movements and did not produce any useful data. The correct intermediate results of the calculations and subsequent review by a local
subject-matter-expert implies that the source of the erroneous results lie with the accuracy and precision of the MEMS IMU. ISAAC presents a foundation for future work where
more robust sensors and/or filtering can be used for further examination of
inertial-based location systems.
Advisors/Committee Members: Julien, Christine, D. Sc. (advisor), Barber, Suzanne (committee member).
Subjects/Keywords: 6DOF; Inertial measurement unit; Dead reckoning
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APA (6th Edition):
Brown, Ryan Allen, 1. (2010). Inertial solution for accurately assessing location coordinates (ISAAC). (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/ETD-UT-2010-05-862
Chicago Manual of Style (16th Edition):
Brown, Ryan Allen, 1977-. “Inertial solution for accurately assessing location coordinates (ISAAC).” 2010. Masters Thesis, University of Texas – Austin. Accessed April 14, 2021.
http://hdl.handle.net/2152/ETD-UT-2010-05-862.
MLA Handbook (7th Edition):
Brown, Ryan Allen, 1977-. “Inertial solution for accurately assessing location coordinates (ISAAC).” 2010. Web. 14 Apr 2021.
Vancouver:
Brown, Ryan Allen 1. Inertial solution for accurately assessing location coordinates (ISAAC). [Internet] [Masters thesis]. University of Texas – Austin; 2010. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/2152/ETD-UT-2010-05-862.
Council of Science Editors:
Brown, Ryan Allen 1. Inertial solution for accurately assessing location coordinates (ISAAC). [Masters Thesis]. University of Texas – Austin; 2010. Available from: http://hdl.handle.net/2152/ETD-UT-2010-05-862
27.
Yang, Weixin.
Biomorphic Hyper-Redundant Snake Robot: Locomotion Simulation, 3D Printed Prototype and Inertial-Measurement-Unit-Based Motion Tracking.
Degree: 2016, University of Nevada – Reno
URL: http://hdl.handle.net/11714/2349
► Snakes are one of the most successful species in the world due to the high adaptability in most environments of the earth. A snakebot is…
(more)
▼ Snakes are one of the most successful species in the world due to the high adaptability in most environments of the earth. A snakebot is a biomorphic hyper-redundant robot that resembles a biological snake. Snakebots are most useful in situations where their unique characteristics give them an advantage in their locomotion environments. These environments tend to be long like pipes or highly cluttered like rubble. Thus, snake robots are currently being developed to assist search and rescue tasks in complex environments.This thesis proposes a detailed architecture to develop a snakebot including building its mathematical model based on statistical geometry analysis and kinematic force analysis; verifying the mathematical model using the numerical simulation; mechanical structure design of the robot; electric system and data transmission system design, and its locomotion data analysis and performance evaluation.In the thesis, we clearly demonstrate that the simulation results prove both the proposed mathematical model and the mechanical design of the robot; the IMU data analysis results agree with the simulation results. To increase the precision level of the IMU based motion tracking for the robot, the Kalman Filter and trapezoid integration algorithms were applied to the data processing and analysis. Finally, the achieved results validate the effectiveness of these applied algorithms. The developed snakebot promises huge potentials in future applications. In our future work, we’ll integrate sensors like camera, force sensing units, and others with the robot, so as to facilitate its control capability with sensor feedback functions. In addition, we will employ and test more powerful microprocessors to improve the real-time computing performance of the robot. Our goal is to make the snakebot an advanced intelligent mechatronic system for fulfilling future search and rescue tasks in the complex and challenging environments.
Advisors/Committee Members: Shen, Yantao (advisor), FADALI, M. SAMI (committee member), LA, HUNG (JIM) (committee member).
Subjects/Keywords: 3D Printe; Hyper-Redundant; Inertial-Measurement-Unit-Based Motion Tracking; Locomotion Simulation; Snake robot
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APA (6th Edition):
Yang, W. (2016). Biomorphic Hyper-Redundant Snake Robot: Locomotion Simulation, 3D Printed Prototype and Inertial-Measurement-Unit-Based Motion Tracking. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/2349
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Yang, Weixin. “Biomorphic Hyper-Redundant Snake Robot: Locomotion Simulation, 3D Printed Prototype and Inertial-Measurement-Unit-Based Motion Tracking.” 2016. Thesis, University of Nevada – Reno. Accessed April 14, 2021.
http://hdl.handle.net/11714/2349.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Yang, Weixin. “Biomorphic Hyper-Redundant Snake Robot: Locomotion Simulation, 3D Printed Prototype and Inertial-Measurement-Unit-Based Motion Tracking.” 2016. Web. 14 Apr 2021.
Vancouver:
Yang W. Biomorphic Hyper-Redundant Snake Robot: Locomotion Simulation, 3D Printed Prototype and Inertial-Measurement-Unit-Based Motion Tracking. [Internet] [Thesis]. University of Nevada – Reno; 2016. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/11714/2349.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Yang W. Biomorphic Hyper-Redundant Snake Robot: Locomotion Simulation, 3D Printed Prototype and Inertial-Measurement-Unit-Based Motion Tracking. [Thesis]. University of Nevada – Reno; 2016. Available from: http://hdl.handle.net/11714/2349
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Colorado State University
28.
Doshi, Saket Sham.
Applications of inertial measurement units in monitoring rehabilitation progress of arm in stroke survivors.
Degree: MS(M.S.), Electrical and Computer Engineering, 2011, Colorado State University
URL: http://hdl.handle.net/10217/48196
► Constraint Induced Movement Therapy (CIMT) has been clinically proven to be effective in restoring functional abilities of the affected arm among stroke survivors. Current CIMT…
(more)
▼ Constraint Induced Movement Therapy (CIMT) has been clinically proven to be effective in restoring functional abilities of the affected arm among stroke survivors. Current CIMT delivery method lacks a robust technique to monitor rehabilitation progress, which results in increasing costs of stroke related health care. Recent advances in the design and manufacturing of Micro Electro Mechanical System (MEMS)
inertial sensors have enabled tracking human motions reliably and accurately. This thesis presents three algorithms that enable monitoring of arm movements during CIMT by means of MEMS
inertial sensors. The first algorithm quantifies the affected arm usage during CIMT. This algorithm filters the arm movement data, sampled during activities of daily life (ADL), by applying a threshold to determine the duration of affected arm movements. When an activity is performed multiple times, this algorithm counts the number of repetitions performed. Current technique uses a touch/proximity sensor and a motor activity log maintained by the patient to determine CIMT duration. Affected arm motion is a direct indicator of CIMT session and hence this algorithm tracks rehabilitation progress more accurately. Actual patients' affected arm movement data analysis shows that the algorithm does activity detection with an average accuracy of >90%. Second of the three algorithms, tracking stroke rehabilitation of affected arm through histogram of distance traversed, evaluates an objective metric to assess rehabilitation progress. The objective metric can be used to compare different stroke patients based on their functional ability in affected arm. The algorithm calculates the histogram by evaluating distances traversed over a fixed duration window. The impact of this window on algorithm's performance is analyzed. The algorithm has better temporal resolution when compared with another standard objective test, box and block test (BBT). The algorithm calculates linearly weighted area under the histogram as a score to rank various patients as per their rehabilitation progress. The algorithm has better performance for patients with chronic stroke and certain degree of functional ability. Lastly, Kalman filter based motion tracking algorithm is presented that tracks linear motions in 2D, such that only one axis can experience motion at any given time. The algorithm has high (>95%) accuracy. Data representing linear human arm motion along a single axis is generated to analyze and determine optimal parameters of Kalman filter. Cross-axis sensitivity of the accelerometer limits the performance of the algorithm over longer durations. A method to identify the 1D components of 2D motion is developed and cross-axis effects are removed to improve the performance of motion tracking algorithm.
Advisors/Committee Members: Jayasumana, Anura P. (advisor), Malcolm, Matthew P. (committee member), Pasricha, Sudeep (committee member), Malaiya, Yashwant K. (committee member).
Subjects/Keywords: stroke rehabilitation; accelerometers; constraint induced movement therapy; inertial measurement unit; Kalman filter; motion tracking
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APA (6th Edition):
Doshi, S. S. (2011). Applications of inertial measurement units in monitoring rehabilitation progress of arm in stroke survivors. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/48196
Chicago Manual of Style (16th Edition):
Doshi, Saket Sham. “Applications of inertial measurement units in monitoring rehabilitation progress of arm in stroke survivors.” 2011. Masters Thesis, Colorado State University. Accessed April 14, 2021.
http://hdl.handle.net/10217/48196.
MLA Handbook (7th Edition):
Doshi, Saket Sham. “Applications of inertial measurement units in monitoring rehabilitation progress of arm in stroke survivors.” 2011. Web. 14 Apr 2021.
Vancouver:
Doshi SS. Applications of inertial measurement units in monitoring rehabilitation progress of arm in stroke survivors. [Internet] [Masters thesis]. Colorado State University; 2011. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/10217/48196.
Council of Science Editors:
Doshi SS. Applications of inertial measurement units in monitoring rehabilitation progress of arm in stroke survivors. [Masters Thesis]. Colorado State University; 2011. Available from: http://hdl.handle.net/10217/48196
Colorado State University
29.
Brents, Colleen.
Low back biomechanics during manual materials handling of beer kegs.
Degree: MS(M.S.), Environmental and Radiological Health Sciences, 2017, Colorado State University
URL: http://hdl.handle.net/10217/185723
► Biomechanical risk factors such as heavy loads and awkward trunk postures have been associated with occupational low back pain. Those same risk factors are commonly…
(more)
▼ Biomechanical risk factors such as heavy loads and awkward trunk postures have been associated with occupational low back pain. Those same risk factors are commonly experienced among workers handling beer kegs. The present study used a 3-dimensional motion capture system as a tool to investigate the low back biomechanics during keg handling at a working brewery. Specifically, five workers transferred spent kegs from a pallet to a conveyor to be cleaned and filled with beer in the present study. Data was collected during the portion of the shift workers handled kegs. Low back angular displacements were assessed during keg handling at two heights. Kegs originated from a high or low position and were defined as a high or low lift. Kinematic data from the study was used to estimate compressive and shear forces at the lumbosacral joint from a 2-dimensional static biomechanical model. Repeated measures analyses were performed with each low back angular displacement variable as a function of lift condition. Differences in low back biomechanics between high and low lifts were identified. During low lifts, torso flexion was significantly greater than high lifts. The magnitudes of flexion achieved during low lifts significantly exceeded those of high lifts. Differences between left axial rotation where significant with larger magnitudes of rotation occurring during high lifts. A broader range of angular displacements was observed in high lifts. In both lifting conditions, estimated kinetics exceeded recommended action limits, potentially putting workers at an increased risk for developing low back pain. Work design (lift condition) influenced low back motion during keg handling. Data collection during operational hours was feasible due to the portability and small design of
inertial measurement units. Results from the study can help improve workplace design in a craft brewery, reduce risk, and create safer work.
Advisors/Committee Members: Rosecrance, John (advisor), Gilkey, David (committee member), Reiser, Raoul (committee member).
Subjects/Keywords: ergonomics; keg; manual materials handling; inertial measurement unit; craft breweries; low back pain
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APA (6th Edition):
Brents, C. (2017). Low back biomechanics during manual materials handling of beer kegs. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/185723
Chicago Manual of Style (16th Edition):
Brents, Colleen. “Low back biomechanics during manual materials handling of beer kegs.” 2017. Masters Thesis, Colorado State University. Accessed April 14, 2021.
http://hdl.handle.net/10217/185723.
MLA Handbook (7th Edition):
Brents, Colleen. “Low back biomechanics during manual materials handling of beer kegs.” 2017. Web. 14 Apr 2021.
Vancouver:
Brents C. Low back biomechanics during manual materials handling of beer kegs. [Internet] [Masters thesis]. Colorado State University; 2017. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/10217/185723.
Council of Science Editors:
Brents C. Low back biomechanics during manual materials handling of beer kegs. [Masters Thesis]. Colorado State University; 2017. Available from: http://hdl.handle.net/10217/185723
30.
Rossetto, Jusiane.
Potencial do método unidade de medida inercial na detecção de bocados.
Degree: 2019, Brazil
URL: http://hdl.handle.net/10183/197725
► Para ampliar os conhecimentos relacionados a avaliação do comportamento ingestivo em pastejo, foram realizados dois estudos. O primeiro estudo com o objetivo de desenvolver um…
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▼ Para ampliar os conhecimentos relacionados a avaliação do comportamento ingestivo em pastejo, foram realizados dois estudos. O primeiro estudo com o objetivo de desenvolver um algoritmo de código aberto que permite detectar bocados no domínio do tempo utilizando unidade de medida inercial (IMU) de um celular. Foram testados os sinais da taxa de rotação ao longo dos eixos y e x (Ry e Rx, respectivamente) e aceleração do usuário ao longo dos eixos y e x (Uy e Ux, respectivamente). Os principais parâmetros que foram considerados foram o valor mínimo de cada pico (h) e o intervalo mínimo entre dois picos (d) fixado em 0,4 segundo. A partir do conjunto de dados de calibração, a porcentagem de bocados corretamente detectadas quando comparado ao observado foi maior para a taxa de rotação ao longo do eixo y com h = 0,2 e h = 0,3 rad. s-1 (82 e 85%) em relação aos outros sinais (Rx, Uy e Ux). Após a validação do algoritmo, não houveram diferenças entre os
valores de h para a percentagem de bocados corretamente detectados e a taxa de falsos positivos. Houveram diferenças para a taxa de falso negativo, onde h = 0,2 obteve a menor taxa (2.88%). A taxa rotação do eixo y obteve os melhores resultados para detecção dos bocados com uma acurácia entre 76.48 e 91.1%. No segundo estudo, o objetivo foi avaliar se diferentes estruturas do pasto podem influenciar na qualidade de detecção dos bocados pelos métodos IMU e IGER (Registrador de comportamento IGER). O experimento foi conduzido na Estação Experimental da Universidade Federal do Rio Grande do Sul, Brasil, em maio de 2018. Os tratamentos consistiram de diferentes alturas do pasto pré-pastejo: 20, 40 e 60 cm de altura em pastagem de Urochloa brizantha cv Marandu. As diferentes alturas de entrada influenciaram de forma linear e negativa a qualidade de detecção dos bocados. Não houve relação entre a altura do pico (taxa de rotação ao longo do eixo y) e a massa dos bocados, no entanto, a
altura do pico diminuiu com o aumento da altura do dossel. Quando comparados os métodos de detecção de bocados o método IMU foi superior ao IGER nos tratamentos de 20 e 60 cm, não havendo diferenças no tratamento de 40 cm. O tratamento com 60 cm de altura do dossel foi menos acurado na detecção dos bocados nos dois métodos de detecção aplicados. Portanto, a estrutura da pastagem influencia a qualidade de detecção dos bocados. O método IMU mostrou-se eficaz na detecção de bocados em experimentos de pastejo.
To improve our knowledge on the evaluation of ingestive behavior two studies was performed. The first one with the objective to develop an open-source algorithm that allows to detect bites in the time domain using the inertial measurement unit (IMU) of a smartphone. The signals of the rotation rate along the y and x axis (Ry and Rx, respectively) and user acceleration along the y and x axis (Uy and Ux, respectively) were tested. The main parameters that were considered are the
minimum value of each peak (h) and the minimum interval between two peaks (d) fixed in 0.4 second. From the calibration…
Advisors/Committee Members: Carvalho, Paulo Cesar de Faccio.
Subjects/Keywords: Bovino; Pecuária; Pastagem; Pastejo; Comportamento animal; Bite; Cattle; Livestock precision; Sensor; Inertial measurement unit
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APA (6th Edition):
Rossetto, J. (2019). Potencial do método unidade de medida inercial na detecção de bocados. (Doctoral Dissertation). Brazil. Retrieved from http://hdl.handle.net/10183/197725
Chicago Manual of Style (16th Edition):
Rossetto, Jusiane. “Potencial do método unidade de medida inercial na detecção de bocados.” 2019. Doctoral Dissertation, Brazil. Accessed April 14, 2021.
http://hdl.handle.net/10183/197725.
MLA Handbook (7th Edition):
Rossetto, Jusiane. “Potencial do método unidade de medida inercial na detecção de bocados.” 2019. Web. 14 Apr 2021.
Vancouver:
Rossetto J. Potencial do método unidade de medida inercial na detecção de bocados. [Internet] [Doctoral dissertation]. Brazil; 2019. [cited 2021 Apr 14].
Available from: http://hdl.handle.net/10183/197725.
Council of Science Editors:
Rossetto J. Potencial do método unidade de medida inercial na detecção de bocados. [Doctoral Dissertation]. Brazil; 2019. Available from: http://hdl.handle.net/10183/197725
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