subject:(Gyroscopes)

University of Johannesburg

1. Du Plessis, Jan Abraham Francois. An alternative gyroscope calibration methodology.

Degree: 2013, University of Johannesburg

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D.Ing. (Electrical & Electronic Engineering Science)

The objective of the research performed in this thesis is to address the calibration process of Fiber-Optic Gyroscopes (FOGs)… (more)

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D.Ing. (Electrical & Electronic Engineering Science)

The objective of the research performed in this thesis is to address the calibration process of Fiber-Optic Gyroscopes (FOGs) - a class of gyroscopes that make use of the Sagnac effect to determine rotational information from laser-light traveling in an optical fiber. The calibration process has traditionally been a time-consuming and therefore an expensive one due to the various environmental parameters that can influence the sensor under operation. Calibration is not a step that can be neglected as it is the process whereby the residual manufacturing errors in the sensor are characterized. If these measurement errors are not eliminated, the sensors would result in the host vehicle's assumed position rapidly diverging from its true position. Once the errors are characterized, they can be removed from the sensor output to improve the accuracy of the complete navigation system. The class of the sensor is determined by the amount of residual errors and the smaller the residual errors, the more expensive the sensor. The specific focus of the study is to determine whether it is possible to reduce the calibration cost of the Fiber-Optic Gyroscopes through the use of innovative calibration strategies. The use of neural networks are investigated as an alternative to the traditional calibration strategies which consists of the estimation of the constant error parameters through stochastic estimation strategies such as Kalman filters. The whole calibration problem is recast into the well-defined Systems Identification (SID) domain where the whole calibration problem is considered in terms of the systems identification design steps. The main contributions presented in this study are that the traditional calibration strategy is reviewed by casting the calibration problem into the Systems Identification domain; that a unified FOG error model is developed that combines a number of seemingly contradictory error models available in the technical literature; that computational intelligence techniques are used to perform gyro calibration; that a novel, non-linear gyro calibration strategy is developed; and that the sensors are calibrated under the simultaneous dynamic excitation of the full range of multi-dimensional environmental conditions. In the process of the development of this new calibration strategy the need for a problemspecific Criterion of Fit was observed. Such a Criterion of Fit was therefore developed and it acted as the core criterium whereby the accuracy of the new calibration strategy was assessed. One of the most important results obtained from the research presented in this thesis is that the new strategy significantly outperforms the traditional strategies and that, with the availability of high-performance embedded computational platforms, it has potential to be used within an operational environment as the gyro compensation strategy of choice.

Subjects/Keywords: Gyroscopes - Calibration; Fiber-optic gyroscopes - Calibration

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APA (6^th Edition):

Du Plessis, J. A. F. (2013). An alternative gyroscope calibration methodology. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/8684

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Du Plessis, Jan Abraham Francois. “An alternative gyroscope calibration methodology.” 2013. Thesis, University of Johannesburg. Accessed June 24, 2019. http://hdl.handle.net/10210/8684.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Du Plessis, Jan Abraham Francois. “An alternative gyroscope calibration methodology.” 2013. Web. 24 Jun 2019.

Vancouver:

Du Plessis JAF. An alternative gyroscope calibration methodology. [Internet] [Thesis]. University of Johannesburg; 2013. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/10210/8684.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Du Plessis JAF. An alternative gyroscope calibration methodology. [Thesis]. University of Johannesburg; 2013. Available from: http://hdl.handle.net/10210/8684

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

The Ohio State University

2. Goodstein, Robert. Motion of a gyro with Cardan suspension of non-negligible mass.

Degree: PhD, Graduate School, 1957, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu14864646278095

Subjects/Keywords: Education; Gyroscopes

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APA (6^th Edition):

Goodstein, R. (1957). Motion of a gyro with Cardan suspension of non-negligible mass. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu14864646278095

Chicago Manual of Style (16^th Edition):

Goodstein, Robert. “Motion of a gyro with Cardan suspension of non-negligible mass.” 1957. Doctoral Dissertation, The Ohio State University. Accessed June 24, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu14864646278095.

MLA Handbook (7^th Edition):

Goodstein, Robert. “Motion of a gyro with Cardan suspension of non-negligible mass.” 1957. Web. 24 Jun 2019.

Vancouver:

Goodstein R. Motion of a gyro with Cardan suspension of non-negligible mass. [Internet] [Doctoral dissertation]. The Ohio State University; 1957. [cited 2019 Jun 24]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu14864646278095.

Council of Science Editors:

Goodstein R. Motion of a gyro with Cardan suspension of non-negligible mass. [Doctoral Dissertation]. The Ohio State University; 1957. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu14864646278095

The Ohio State University

3. Roth, Donald Lee. An analytical study of some effects of external vibrations and internal imperfections on the performance of gyroscopes .

Degree: PhD, Graduate School, 1967, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486634509113194

Subjects/Keywords: Education; Gyroscopes

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APA (6^th Edition):

Roth, D. L. (1967). An analytical study of some effects of external vibrations and internal imperfections on the performance of gyroscopes . (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1486634509113194

Chicago Manual of Style (16^th Edition):

Roth, Donald Lee. “An analytical study of some effects of external vibrations and internal imperfections on the performance of gyroscopes .” 1967. Doctoral Dissertation, The Ohio State University. Accessed June 24, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486634509113194.

MLA Handbook (7^th Edition):

Roth, Donald Lee. “An analytical study of some effects of external vibrations and internal imperfections on the performance of gyroscopes .” 1967. Web. 24 Jun 2019.

Vancouver:

Roth DL. An analytical study of some effects of external vibrations and internal imperfections on the performance of gyroscopes . [Internet] [Doctoral dissertation]. The Ohio State University; 1967. [cited 2019 Jun 24]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486634509113194.

Council of Science Editors:

Roth DL. An analytical study of some effects of external vibrations and internal imperfections on the performance of gyroscopes . [Doctoral Dissertation]. The Ohio State University; 1967. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486634509113194

Georgia Tech

4. Shao, Peng. Microscale hemispherical shell resonating gyroscopes.

Degree: PhD, Mechanical Engineering, 2014, Georgia Tech

URL: http://hdl.handle.net/1853/54266

► MEMS gyroscopes are electromechanical devices that measure rate or angle of rotation. They are one of the fastest growing segments of the microsensor market. Advances… (more)

▼ MEMS gyroscopes are electromechanical devices that measure rate or angle of rotation. They are one of the fastest growing segments of the microsensor market. Advances in microfabrication technologies have enabled the implementation of chip scale monolithic gyroscopes (MEMS gyroscopes) with very small form factor that are lightweight and consume little power. Over the past decade, significant amount of research have been directed towards the development of high performance and very small size MEMS gyroscopes for applications in consumer electronics such as smart phones. In this dissertation, high aspect-ratio hemispherical shell structure with continuously curved surface is utilized as the high Q resonator. Being an axial symmetric structure, the 3D hemispherical shell is able to achieve low frequency (3 ~ 5 kHz) within 2 mm X 2mm die area. Detailed analysis on energy dissipation also shows its potential to achieve ultra-high quality factor with the selection of high Q material and proper design of support structure. This dissertation presents, for the first time, the analysis, design, fabrication and characterization of a micro-hemispherical resonating gyroscope (μHRG) that has the potential to be used as a whole angle micro-gyroscope. A three-dimensional high aspect-ratio poly- and single crystalline silicon (3D HARPSS) process is developed to fabricate free-standing, stem-supported hemispherical shell with self-aligned deep electrodes for driving, sensing and quadrature control of the gyroscope. This monolithic process consists of seven lithography steps and combines 3D micro-structure with curved surfaces with the HARPSS process to create capacitive electrodes with arbitrary gaps around the micro-hemispherical shell resonator (μHSR). Polysilicon is utilized as the structural material due to its isotropic mechanical properties and the potential of achieving high quality factor. The fabrication is demonstrated successfully by prototypes of polysilicon μHRG with diameter of 1.2 mm and thickness of 700 nm. Frequency response and gyro operation are electronically measured using the integrated electrodes. Quality factor of 8,500 is measured with frequency mismatch of 105 Hz. Electronic mode matching and alignment are successfully performed by applying tuning voltages and quadrature nulling voltages. An open loop rate sensitivity scale factor of 4.42 mV/°/s was measured. Design and process optimization of the support structure improved the quality factor to 40,000. Further improvement of quality factor will enable the demonstration of high performance RIG using polysilicon μHRG. Advisors/Committee Members: Ayazi, Farrokh (advisor), Pierron, Olivier (advisor), Brand, Oliver (committee member), Hesketh, Peter J. (committee member), Degertekin, F. Levent (committee member).

Subjects/Keywords: Gyroscopes; Quality factor; Inertial navigation

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APA (6^th Edition):

Shao, P. (2014). Microscale hemispherical shell resonating gyroscopes. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/54266

Chicago Manual of Style (16^th Edition):

Shao, Peng. “Microscale hemispherical shell resonating gyroscopes.” 2014. Doctoral Dissertation, Georgia Tech. Accessed June 24, 2019. http://hdl.handle.net/1853/54266.

MLA Handbook (7^th Edition):

Shao, Peng. “Microscale hemispherical shell resonating gyroscopes.” 2014. Web. 24 Jun 2019.

Vancouver:

Shao P. Microscale hemispherical shell resonating gyroscopes. [Internet] [Doctoral dissertation]. Georgia Tech; 2014. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/1853/54266.

Council of Science Editors:

Shao P. Microscale hemispherical shell resonating gyroscopes. [Doctoral Dissertation]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/54266

University of British Columbia

5. Robb, Norman Ian. Precession of an orbiting gyroscope in the gravitational field of the earth .

Degree: 1966, University of British Columbia

URL: http://hdl.handle.net/2429/37333

► The motion of a gyroscope in a satellite orbiting the earth is considered. The axis of rotation of the gyroscope is assumed to be parallely… (more)

Subjects/Keywords: Gyroscopes; Precession

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APA (6^th Edition):

Robb, N. I. (1966). Precession of an orbiting gyroscope in the gravitational field of the earth . (Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/37333

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Robb, Norman Ian. “Precession of an orbiting gyroscope in the gravitational field of the earth .” 1966. Thesis, University of British Columbia. Accessed June 24, 2019. http://hdl.handle.net/2429/37333.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Robb, Norman Ian. “Precession of an orbiting gyroscope in the gravitational field of the earth .” 1966. Web. 24 Jun 2019.

Vancouver:

Robb NI. Precession of an orbiting gyroscope in the gravitational field of the earth . [Internet] [Thesis]. University of British Columbia; 1966. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/2429/37333.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Robb NI. Precession of an orbiting gyroscope in the gravitational field of the earth . [Thesis]. University of British Columbia; 1966. Available from: http://hdl.handle.net/2429/37333

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

6. Lang, Georgette Marie. Synthesis of Gyroscope like Complexes via Alkene Metathesis: The Effect of Ligand Substitutions on Rotational Barriers.

Degree: PhD, Chemistry, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/169670

► Major objectives of this dissertation involve the synthesis of gyroscope like complexes based upon dibridgehead diphosphine and diarsine cages, complexes with neutral dipolar rotors, and… (more)

▼ Major objectives of this dissertation involve the synthesis of gyroscope like complexes based upon dibridgehead diphosphine and diarsine cages, complexes with neutral dipolar rotors, and reactivity and rotational behavior of such complexes. Ring closing metathesis and hydrogenation reactions of trans-Fe(CO)3(P((CH2)mCH=CH2)3)2 (m = 4-8) yield trans-Fe(CO)3(P((CH2)n)3P) (n = 2m+2). Reactions with NO+ BF4– and [H(OEt2)2]^+ Barf^– (BArf = B(3,5-C6H3(CF3)2)4) give the cations trans-[Fe(CO)2(NO)(P((CH2)n)3P)]+ BF4^– and mer, trans-[Fe(CO)3(H)(P((CH2)n)3P)]+ BArf– (n = 10, 12, 14). The rotational dynamics of these complexes are probed by variable temperature NMR spectroscopy. As opposed to those with larger values of n, the rotators of trans-[Fe(CO)2(NO)(P((CH2)n)3P)]^+ BF4^– (n = 10, 12) and mer, trans-[Fe(CO)3(H)(P((CH2)n)3P)]^+ Barf^– (n = 10), show slow rotation on the NMR timescale at room temperature. VT-NMR data yield ΔH^‡/ΔS^‡ values (kcal/mol and eu) of 8.3/–28.4 and 9.5/–6.5 for Fe(CO)2(NO)^+ rotation (n = 10, 12), and 6.1/–23.5 for Fe(CO)3(H)+ rotation (n = 12). Reaction of arsines As((CH2)mCH=CH2)3 (m = 4-6) with (BDA)Fe(CO)3 (BDA = benzylideneacetone) yield trans-Fe(CO)3(As((CH2)mCH=CH2)3)2. Metathesis and hydrogenation reactions afford trans-Fe(CO)3(As((CH2)n)3As) (n = 10, 12, 14). Previously discussed analogous reactions give trans-[Fe(CO)2(NO)(As((CH2)n)3As)]+ BF4– and mer,trans-[Fe(CO)3(H)(As((CH2)n)3As)]+ BArf–. VT-NMR data give ΔH‡/ΔS‡ values of 7.7/–22.1 and 5.4/–22.7 for Fe(CO)2(NO)^+ and Fe(CO)3(H)^+ rotation (n = 12) which are distinctly lower than those in diphosphine analogs. Reactions of trans-Fe(CO)3(P((CH2)mCH=CH2)3)2 (m = 4-8) with NO^+ BF4^– afford trans-[Fe(CO)2(NO)(P((CH2)mCH=CH2)3)2]^+ BF4^–. Further substitution is effected with Bu4N^+ X^- (X = Cl, Br, I, CN) to give trans-Fe(CO)(NO)(X)(P((CH2)mCH=CH2)3)2. Three synthetic routes to gyroscope-like complexes trans-Fe(CO)(NO)(X)(P((CH2)n)3P) (n/X = 4-8/Cl, Br, I, CN) are described. (1) Reaction of trans-[Fe(CO)2(NO)(P((CH2)14)3P)]+ BF4^– with Bu4N^+ X^- gives trans-Fe(CO)(NO)(X)(P((CH2)14)3P). (2) Treatment of the acyclic complexes trans-Fe(CO)(NO)(X)(P((CH2)mCH=CH2)3)2 with Grubbs' catalyst affords trans Fe(CO)(NO)(X)(P((CH2)mCH=CH(CH2)m)3P). (3) Similar reactions with trans [Fe(CO)2(NO)(P((CH2)mCH=CH2)3)2]^+ BF4^– can give trans-[Fe(CO)2(NO)(P((CH2)n)3P)]+ BF4^–. Consistent with NMR data, crystal structures of trans-Fe(CO)(NO)(X)(P((CH2)14)3P) (X = Cl, Br, CN) indicate that the void space within the diphosphine cages appears sufficient for Fe(CO)(NO)(X) rotation. Advisors/Committee Members: Gladysz, John A (advisor), Darensbourg, Don J (committee member), Zhou, Hongcai (committee member), Seminario, Jorge (committee member).

Subjects/Keywords: molecular gyroscopes; rotational barriers

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lang, G. M. (2016). Synthesis of Gyroscope like Complexes via Alkene Metathesis: The Effect of Ligand Substitutions on Rotational Barriers. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/169670

Chicago Manual of Style (16^th Edition):

Lang, Georgette Marie. “Synthesis of Gyroscope like Complexes via Alkene Metathesis: The Effect of Ligand Substitutions on Rotational Barriers.” 2016. Doctoral Dissertation, Texas A&M University. Accessed June 24, 2019. http://hdl.handle.net/1969.1/169670.

MLA Handbook (7^th Edition):

Lang, Georgette Marie. “Synthesis of Gyroscope like Complexes via Alkene Metathesis: The Effect of Ligand Substitutions on Rotational Barriers.” 2016. Web. 24 Jun 2019.

Vancouver:

Lang GM. Synthesis of Gyroscope like Complexes via Alkene Metathesis: The Effect of Ligand Substitutions on Rotational Barriers. [Internet] [Doctoral dissertation]. Texas A&M University; 2016. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/1969.1/169670.

Council of Science Editors:

Lang GM. Synthesis of Gyroscope like Complexes via Alkene Metathesis: The Effect of Ligand Substitutions on Rotational Barriers. [Doctoral Dissertation]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/169670

University of Johannesburg

7. Cronjé, Hendrik Albertus. Gyroscopes as feedback sensors for position control of a flexible robot arm.

Degree: 2014, University of Johannesburg

URL: http://hdl.handle.net/10210/9052

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M.Tech. (Electrical Engineering)

The challenges faced by modern industrial robots and robots in general are increasing in cornplexity. A modern robot can be defined as… (more)

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M.Tech. (Electrical Engineering)

The challenges faced by modern industrial robots and robots in general are increasing in cornplexity. A modern robot can be defined as a technological system. capable of replacing or assisting man in carrying out a variety of physical tasks. Thus the implementation of advanced technology in the field of industrial robotics poses different challenges to those faced by engineers in other fields. The reason for this lies mainly in the fact that robots have to be be able to interact with their environment in some intelligent way. For the robot to be able to accomplish this. it must be able to obtain information about its immediate surroundings. and/or its position in the surroundings. In the case of industrial or other stationary robots. the knowledge about its surroundings are of less importance than its own position and the position of the relevant workpieces in the work space. Traditionally the position of a robot arm is measured using position encoders mounted at the joints of the robot arm. The combination of information obtained from these sensors gives the position of the endpoint of the arm. To ensure that the encoder positions accurately reflect the actual position of the arm. the arms have to be rigid, resulting in a heavy. bulky and costly system. If it were possible to determine the endpoint of a robot arm without using the joints of the arm as reference points, it would be possible to design more flexible robot arms. resulting in less costly and more maneuverable systems. Various solutions were considered for this measurement problem and from these it was decided to investigate the use of inertial measurement technology to determine the endpoint position of a flexible robot arm. To test the use of gyroscopes as feedback sensors in the position control of a flexible robot arm. a small low cost robot arm was developed. The design was based on an articulated robot arm with three degrees of freedom (DOF). The system was designed to be fitted with a flexible arm segment to evaluate the gyroscope-based feedback system. The system was further fitted with traditional position sensors to be used as the benchmark against which the gyroscope-based control system was to be compared. Making use of the traditional position sensors the endpoint of the arm can be accurately placed in a space of :3mm x 4mm x 1mni. When the robot was fitted with the flexible arm segment the gyroscopes were able to measure movement of the flexible ann. which the traditional sensors could not detect. Using the gyroscopes as position feedback. the robot was able to track the potentiometer position within 0.19° under dynamic conditions, but under stationary conditions. the error was 6.50 • Based on the results obtained. it was concluded that the displacement of a robot arm segment can be determined using inertial measurement technology. The low cost sensors used proved the concept. but for reliable operation. higher accuracy sensors would be required aided with information obtained from other sensors. i.e,…

Subjects/Keywords: Robots, Industrial; Gyroscopes; Engineering instruments

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APA (6^th Edition):

Cronjé, H. A. (2014). Gyroscopes as feedback sensors for position control of a flexible robot arm. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/9052

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cronjé, Hendrik Albertus. “Gyroscopes as feedback sensors for position control of a flexible robot arm.” 2014. Thesis, University of Johannesburg. Accessed June 24, 2019. http://hdl.handle.net/10210/9052.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cronjé, Hendrik Albertus. “Gyroscopes as feedback sensors for position control of a flexible robot arm.” 2014. Web. 24 Jun 2019.

Vancouver:

Cronjé HA. Gyroscopes as feedback sensors for position control of a flexible robot arm. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/10210/9052.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cronjé HA. Gyroscopes as feedback sensors for position control of a flexible robot arm. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/9052

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Irvine

8. Senkal, Doruk. Micro-glassblowing Paradigm for Realization of Rate Integrating Gyroscopes.

Degree: Mechanical and Aerospace Engineering, 2015, University of California – Irvine

URL: http://www.escholarship.org/uc/item/46k9380z

► This Ph.D. dissertation reports novel fabrication processes and architectures for implementation of Rate Integrating Gyroscopes at micro-scale. Majority of the focus is directed towards development… (more)

▼ This Ph.D. dissertation reports novel fabrication processes and architectures for implementation of Rate Integrating Gyroscopes at micro-scale. Majority of the focus is directed towards development of a surface tension and pressure driven micro-glassblowing paradigm, which is envisioned to serve as an enabling mechanism for wafer-scale fabrication of 3-D micro-wineglass gyroscopes. New 2-D silicon Micro Rate Integrating Gyroscope (MRIG) architectures are also explored to bridge the gap between conventional micro-machining techniques and micro-glassblowing processes, and to serve as a test platform for various MRIG control strategies. Closed loop Whole Angle operation of these 2-D silicon MRIG architectures is presented to identify some of the control challenges associated with MRIG control, such as energy pumping and suppression of errors caused by structural imperfections.The main contribution of the thesis is the development of a high temperature (1700 °C) micro-glassblowing process for fabrication of highly symmetric and low internal dissipation 3-D fused silica wineglass resonators. Owing to the "self-healing'" properties of surface tension and pressure driven micro-glassblowing paradigm, and the low internal loss fused silica material, quality factors above 1 million and frequency splits less than 1 Hz have been demonstrated. In addition to a multi-purpose test-bed for micro-wineglass characterization, in-situ electrode structures with sub 10 micron capacitive gaps are reported for electrostatic transduction.In order to streamline the realization of MRIG control strategies, two new Si-MEMS MRIG architectures were also developed as a part of this thesis: Toroidal Ring Gyroscope (TRG) and Dual Foucault Pendulum (DFP) Gyroscope. Toroidal Ring Gyroscope consists of an outer anchor, concentric ring suspension system, and inner electrode assembly. Q-factors above 100,000 were obtained with this architecture at a compact size of 1760 micron. First demonstration of a parametrically driven MRIG is also reported as a part of this work, showing better than 20 ppm scale factor stability at 360 °/s rate input. Dual Foucault Pendulum (DFP) architecture is a conventionally machined lumped mass Micro Rate Integrating Gyroscope implemented using in-house silicon-on-insulator technology. It is believed that this two mass DFP architecture is the minimal realization of a dynamically balanced, lumped mass MRIG.Finally, a custom, multi-purpose FPGA/DSP based control system was developed to demonstrate interchangeable rate and rate integrating mechanization of micro-scale gyroscope architectures developed in this thesis. Continuous Rate Integrating Gyroscope operation is demonstrated, by electronically compensating structural imperfections via control loops, such as Phase Locked Loop (PLL), Amplitude Gain Control (AGC), quadrature null loop, and closed-loop parametric drive.

Subjects/Keywords: Mechanical engineering; Electrical engineering; Coriolis Vibratory Gyroscopes; Fused Silica; Microelectromechanical Systems; Micro-glassblowing; Micro-wineglass Gyroscopes; Rate Integrating Gyroscopes

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APA (6^th Edition):

Senkal, D. (2015). Micro-glassblowing Paradigm for Realization of Rate Integrating Gyroscopes. (Thesis). University of California – Irvine. Retrieved from http://www.escholarship.org/uc/item/46k9380z

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Senkal, Doruk. “Micro-glassblowing Paradigm for Realization of Rate Integrating Gyroscopes.” 2015. Thesis, University of California – Irvine. Accessed June 24, 2019. http://www.escholarship.org/uc/item/46k9380z.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Senkal, Doruk. “Micro-glassblowing Paradigm for Realization of Rate Integrating Gyroscopes.” 2015. Web. 24 Jun 2019.

Vancouver:

Senkal D. Micro-glassblowing Paradigm for Realization of Rate Integrating Gyroscopes. [Internet] [Thesis]. University of California – Irvine; 2015. [cited 2019 Jun 24]. Available from: http://www.escholarship.org/uc/item/46k9380z.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Senkal D. Micro-glassblowing Paradigm for Realization of Rate Integrating Gyroscopes. [Thesis]. University of California – Irvine; 2015. Available from: http://www.escholarship.org/uc/item/46k9380z

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

The Ohio State University

9. De Thomas, Anthony P. Nutating rate gyroscope (NURAG) concept.

Degree: PhD, Graduate School, 1969, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486650731866287

Subjects/Keywords: Engineering; Rate gyroscopes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

De Thomas, A. P. (1969). Nutating rate gyroscope (NURAG) concept. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1486650731866287

Chicago Manual of Style (16^th Edition):

De Thomas, Anthony P. “Nutating rate gyroscope (NURAG) concept.” 1969. Doctoral Dissertation, The Ohio State University. Accessed June 24, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486650731866287.

MLA Handbook (7^th Edition):

De Thomas, Anthony P. “Nutating rate gyroscope (NURAG) concept.” 1969. Web. 24 Jun 2019.

Vancouver:

De Thomas AP. Nutating rate gyroscope (NURAG) concept. [Internet] [Doctoral dissertation]. The Ohio State University; 1969. [cited 2019 Jun 24]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486650731866287.

Council of Science Editors:

De Thomas AP. Nutating rate gyroscope (NURAG) concept. [Doctoral Dissertation]. The Ohio State University; 1969. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486650731866287

University of Arizona

10. Anderson, Dana Zachary. The four-mode linearly-polarized ring laser gyro .

Degree: 1981, University of Arizona

URL: http://hdl.handle.net/10150/565519

Subjects/Keywords: Optical gyroscopes.; Lasers.

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APA (6^th Edition):

Anderson, D. Z. (1981). The four-mode linearly-polarized ring laser gyro . (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/565519

Chicago Manual of Style (16^th Edition):

Anderson, Dana Zachary. “The four-mode linearly-polarized ring laser gyro .” 1981. Doctoral Dissertation, University of Arizona. Accessed June 24, 2019. http://hdl.handle.net/10150/565519.

MLA Handbook (7^th Edition):

Anderson, Dana Zachary. “The four-mode linearly-polarized ring laser gyro .” 1981. Web. 24 Jun 2019.

Vancouver:

Anderson DZ. The four-mode linearly-polarized ring laser gyro . [Internet] [Doctoral dissertation]. University of Arizona; 1981. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/10150/565519.

Council of Science Editors:

Anderson DZ. The four-mode linearly-polarized ring laser gyro . [Doctoral Dissertation]. University of Arizona; 1981. Available from: http://hdl.handle.net/10150/565519

University of Arizona

11. MacLane, Glenwood Lyle, 1906-. An experimental verification of the laws of gyroscopic motion .

Degree: 1934, University of Arizona

URL: http://hdl.handle.net/10150/553222

Subjects/Keywords: Gyroscopes.; Rotational motion.

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APA (6^th Edition):

MacLane, Glenwood Lyle, 1. (1934). An experimental verification of the laws of gyroscopic motion . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/553222

Chicago Manual of Style (16^th Edition):

MacLane, Glenwood Lyle, 1906-. “An experimental verification of the laws of gyroscopic motion .” 1934. Masters Thesis, University of Arizona. Accessed June 24, 2019. http://hdl.handle.net/10150/553222.

MLA Handbook (7^th Edition):

MacLane, Glenwood Lyle, 1906-. “An experimental verification of the laws of gyroscopic motion .” 1934. Web. 24 Jun 2019.

Vancouver:

MacLane, Glenwood Lyle 1. An experimental verification of the laws of gyroscopic motion . [Internet] [Masters thesis]. University of Arizona; 1934. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/10150/553222.

Council of Science Editors:

MacLane, Glenwood Lyle 1. An experimental verification of the laws of gyroscopic motion . [Masters Thesis]. University of Arizona; 1934. Available from: http://hdl.handle.net/10150/553222

Indian Institute of Science

12. Patil, Nishad. Design And Analysis Of MEMS Angular Rate Sensors.

Degree: 2006, Indian Institute of Science

URL: http://hdl.handle.net/2005/439

► Design and analysis of polysilicon and single crystal silicon gyroscopes have been carried out. Variations in suspension design have been explored. Designs that utilize in-plane… (more)

▼ Design and analysis of polysilicon and single crystal silicon gyroscopes have been carried out. Variations in suspension design have been explored. Designs that utilize in-plane and out-of-plane sensing are studied. Damping plays an important role in determining the sense response. Reduction in damping directly aﬀects sensor performance. The various damping mechanisms that are prevalent in gyroscopes are studied. Perforations on the proof mass are observed to significantly reduce the damping in the device when operated in air. The eﬀects of perforation geometry and density have been analyzed. The analysis results show that there is a two orders of magnitude reduction in damping of thick gyroscope structures with optimized perforation design. Equivalent circuit lumped parameter models have been developed to analyze gyroscope performance. The simulation results of these models have been compared with results obtained from SABER, a MEMS speciﬁc system level design tool from Coventorware. The lumped parameter models are observed to produce faster simulation results with an accuracy comparable to that of Coventorware Three gyroscopes speciﬁc to the PolyMUMPS fabrication process have been designed and their performance analyzed. Two of the designs sense motion out-of-plane and the other senses motion in-plane. Results of the simulation show that for a given damping, the gyro design with in-plane modes gives a resolution of 4º/s. The out-of-plane gyroscopes have two variations in suspension. The hammock suspension resolves a rate of 25º/s in a 200 Hz bandwidth while the design with folded beam suspension resolves a rate of 2º/s in a 12 Hz bandwidth. A single crystal silicon in-plane gyroscope has been designed with vertical electrodes to sense Coriolis motion. This design gives an order of magnitude higher Capacitance change for a given rotation in comparison to conventional comb-ﬁnger design. The eﬀects of process induced residual stress on the characteristic frequencies of the polysilicon gyroscopes are also studied. The in-plane gyroscope is found to be robust to stress variations. Analysis results indicate that the tuning fork gyroscope with the hammock suspension is the most susceptible to compressive residual stress, with a signiﬁcant drop in sensitivity at high stress values. Advisors/Committee Members: Pratap, Rudra.

Subjects/Keywords: Microelectromechanical Systems; Detectors; Gyroscopes; Damping; MEMS Gyroscopes; Gyroscope Design; Angular Rate Sensors; Electromechanics

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APA (6^th Edition):

Patil, N. (2006). Design And Analysis Of MEMS Angular Rate Sensors. (Thesis). Indian Institute of Science. Retrieved from http://hdl.handle.net/2005/439

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Patil, Nishad. “Design And Analysis Of MEMS Angular Rate Sensors.” 2006. Thesis, Indian Institute of Science. Accessed June 24, 2019. http://hdl.handle.net/2005/439.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Patil, Nishad. “Design And Analysis Of MEMS Angular Rate Sensors.” 2006. Web. 24 Jun 2019.

Vancouver:

Patil N. Design And Analysis Of MEMS Angular Rate Sensors. [Internet] [Thesis]. Indian Institute of Science; 2006. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/2005/439.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Patil N. Design And Analysis Of MEMS Angular Rate Sensors. [Thesis]. Indian Institute of Science; 2006. Available from: http://hdl.handle.net/2005/439

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Canterbury

13. Rabeendran, Nishanthan. A Study of Ring Laser Gyroscopes.

Degree: Physics and Astronomy, 2008, University of Canterbury

URL: http://hdl.handle.net/10092/1989

► This thesis presents a study of a 1.6 metre square, helium-neon based ring laser gyroscope (denoted PR-1). This device is mounted on one of the… (more)

Subjects/Keywords: ring laser; gyroscopes; laser gyroscopes; rotation sensor; rotation detector

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APA (6^th Edition):

Rabeendran, N. (2008). A Study of Ring Laser Gyroscopes. (Thesis). University of Canterbury. Retrieved from http://hdl.handle.net/10092/1989

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rabeendran, Nishanthan. “A Study of Ring Laser Gyroscopes.” 2008. Thesis, University of Canterbury. Accessed June 24, 2019. http://hdl.handle.net/10092/1989.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rabeendran, Nishanthan. “A Study of Ring Laser Gyroscopes.” 2008. Web. 24 Jun 2019.

Vancouver:

Rabeendran N. A Study of Ring Laser Gyroscopes. [Internet] [Thesis]. University of Canterbury; 2008. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/10092/1989.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rabeendran N. A Study of Ring Laser Gyroscopes. [Thesis]. University of Canterbury; 2008. Available from: http://hdl.handle.net/10092/1989

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Florida

14. Sun, Hongzhi. Sensing and Control Electronics Design for Capacitive CMOS-MEMS Inertial Sensors.

Degree: PhD, Electrical and Computer Engineering, 2011, University of Florida

URL: http://ufdc.ufl.edu/UFE0043731

► The deep reactive-ion-etching CMOS-MEMS techniques provide a low-cost, small-size, and high-performance inertial sensing solution. However, the design of the read-out electronics for the CMOS-MEMS inertial… (more)

Subjects/Keywords: Accelerometers; Amplifiers; Capacitance; Electric potential; Electronics; Gyroscopes; Microelectromechanical systems; Sensors; Signals; Transistors; accelerometers – cmos-mems – electronics – gyroscopes

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APA (6^th Edition):

Sun, H. (2011). Sensing and Control Electronics Design for Capacitive CMOS-MEMS Inertial Sensors. (Doctoral Dissertation). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0043731

Chicago Manual of Style (16^th Edition):

Sun, Hongzhi. “Sensing and Control Electronics Design for Capacitive CMOS-MEMS Inertial Sensors.” 2011. Doctoral Dissertation, University of Florida. Accessed June 24, 2019. http://ufdc.ufl.edu/UFE0043731.

MLA Handbook (7^th Edition):

Sun, Hongzhi. “Sensing and Control Electronics Design for Capacitive CMOS-MEMS Inertial Sensors.” 2011. Web. 24 Jun 2019.

Vancouver:

Sun H. Sensing and Control Electronics Design for Capacitive CMOS-MEMS Inertial Sensors. [Internet] [Doctoral dissertation]. University of Florida; 2011. [cited 2019 Jun 24]. Available from: http://ufdc.ufl.edu/UFE0043731.

Council of Science Editors:

Sun H. Sensing and Control Electronics Design for Capacitive CMOS-MEMS Inertial Sensors. [Doctoral Dissertation]. University of Florida; 2011. Available from: http://ufdc.ufl.edu/UFE0043731

Texas A&M University

15. Zeits, Paul. Olefin Metatheses in Metal Coordination Spheres: Development of Gyroscope-like trans-Spanning Bis(pyridine) Complexes and Organometallic pi-Adducts of Conjugated Polymers.

Degree: 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10265

► The olefin metathesis reaction has become one of the most powerful carbon-carbon bond forming reaction in synthetic chemistry. This work has expanded the utility of… (more)

▼ The olefin metathesis reaction has become one of the most powerful carbon-carbon bond forming reaction in synthetic chemistry. This work has expanded the utility of olefin metathesis in metal coordination spheres in three major directions (1) the synthesis and characterization of trans-spanning bis(pyridine)PtCl2 complexes, (2) the developme-adducts of polyacetylene (PA), and (3) the development of regioregular -adducts of poly(phenylene-vinylene) (PPV). Chapter I gives a brief overview of olefin metathesis and previous applications to organometallic substrates. Chapter II details the synthesis of pyridine ligands containing alkenyl substituents, 2-NC5H4(CH2O(CH2)nCH=CH2) (n = 1, 2), 3-NC5H4(CH2O(CH2)nCH=CH2) (n = 1-5, 8, 9), and 3,5-NC5H3(p-C6H4O(CH2)7CH=CH2)2. Metalation of the new ligands with PtCl2 affords the corresponding trans-bis(pyridine)dichloroplatinum complexes, trans-PtCl2(2-NC5H4(CH2O(CH2)nCH=CH2))2 (n = 1, 2), trans-PtCl2(3-NC5H4(CH2O(CH2)nCH=CH2))2 (n = 1-5, 8, 9), and trans-PtCl2(3,5-NC5H3(p-C6H4O(CH2)7CH=CH2))2. Ring-closing metathesefirst generation catalyst followed by hydrogenations with Pd/C afford the title complexes trans-PtCl2-(NC5H4(CH2O(CH2)2n+2OCH2)H4C5N)] (n = 1, 2), trans-PtCl2-(NC5H4(CH2O(CH2)2n+2OCH2)H4C5N)] (n = 4, 8, 9), and trans-PtCl2-(NC5H3(p-C6H4O(CH2)12O-p-C6H4)2H3C5N)]. Reactions with methylmagnesium bromide afford trans-PtCl(CH3)(3-NC5H4(CH2O(CH2)nCH=CH2))2 (n = 2, 8) and trans-PtCl(CH3-(NC5H4(CH2O(CH2)nOCH2)H4C5N)] (n = 10, 18), which feature dipolar rotators. Low temperature NMR spectra in the latter remained facile on the NMR time scale in CDFCl2 at -120 degrees Celsius. Chapter III focuses on the application of ROMP with organometallic monomers to form metal pi-adducts of polyacetylene. The new complex (n4-benzene)Cp*Ir has been synthesized, crystallographically characterized, and evaluated in the ROMP reaction. Monomers (n4-benzene)CpIr, [(n6-COT)CpRu][PF6], and (n4-COT)Fe(CO)3 were also evaluated in the ROMP reaction. ROMP of (?4-benzene)CpIr with Grubbs' first generation catalyst afforded the conductive regioregular polymer CpIr-PA. Chapter IV focuses on the synthesis of the divinyl benzene complexes [Cp*Ir(C6H4(CH=CH2)2)][BF4]2 and [Cp*Ru(C6H4(CH=CH2)2)][OTf] and their polymerization via ADMET to afford PPV systems. Treatment of divinyl benzene ed the conductive regioregular polymers [Cp*Ir-PPV][BF4]2n and [Cp*Ru-PPV][OTf]n. The photophysical properties of the new -metal adducts of PPV exhibit blue-shifts relative to typical PPVs and retain strong UV absorption. Advisors/Committee Members: Gladysz, John A. (advisor), Darensbourg, Donald J. (committee member), Gabbai, Francois P. (committee member), Grunlan, Jaime C. (committee member).

Subjects/Keywords: olefin metathesis; conjugated polymers; conducting polymers; molecular gyroscopes

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APA (6^th Edition):

Zeits, P. (2012). Olefin Metatheses in Metal Coordination Spheres: Development of Gyroscope-like trans-Spanning Bis(pyridine) Complexes and Organometallic pi-Adducts of Conjugated Polymers. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10265

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zeits, Paul. “Olefin Metatheses in Metal Coordination Spheres: Development of Gyroscope-like trans-Spanning Bis(pyridine) Complexes and Organometallic pi-Adducts of Conjugated Polymers.” 2012. Thesis, Texas A&M University. Accessed June 24, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10265.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zeits, Paul. “Olefin Metatheses in Metal Coordination Spheres: Development of Gyroscope-like trans-Spanning Bis(pyridine) Complexes and Organometallic pi-Adducts of Conjugated Polymers.” 2012. Web. 24 Jun 2019.

Vancouver:

Zeits P. Olefin Metatheses in Metal Coordination Spheres: Development of Gyroscope-like trans-Spanning Bis(pyridine) Complexes and Organometallic pi-Adducts of Conjugated Polymers. [Internet] [Thesis]. Texas A&M University; 2012. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10265.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zeits P. Olefin Metatheses in Metal Coordination Spheres: Development of Gyroscope-like trans-Spanning Bis(pyridine) Complexes and Organometallic pi-Adducts of Conjugated Polymers. [Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10265

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Berkeley

16. Zhang, Fu. Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs).

Degree: Mechanical Engineering, 2015, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/42c4x70m

► This dissertation investigates the design of control algorithms and calibration methods forMicroscale Rate Integrating Gyroscopes (MRIGs). As its name implies, a MRIG operatesin rate integrating… (more)

▼ This dissertation investigates the design of control algorithms and calibration methods forMicroscale Rate Integrating Gyroscopes (MRIGs). As its name implies, a MRIG operatesin rate integrating mode and can directly measure the rotation angle of the base where itis mounted. However, the MRIG mechanical system does not spontaneously operate in arate integrating mode, but requires an active controller. Such a controller enables the MRIG to oscillate in a specific pattern that is related to the input rotation angle in a measurable way.Conventional micro-machined gyroscopes (i.e. MEMS gyroscopes) operate in rate mode (as apposed to rate integrating mode). That is, the gyroscope directly measures the rotation rate of the base. The measured rotation rate is then numerically integrated over time to obtain the input rotation angle. The main drawback of this measuring mechanism is that, by integrating, the rate measurement error will propagate over time, causing the angle measurement to drift from the real input angle. MRIG, by its operating principle, can directly measure the input rotation angle; hence it suffers from no such error propagation.A well-known control scheme for rate integrating gyroscopes was proposed by Lynch in 1995 [51]. This control scheme has demonstrated its efficacy on precisely fabricated rate integrating gyroscopes such as Hemispherical Resonance Gyroscopes (HRGs). However, for MRIGs fabricated by micro-fabrication technology, fabrication imperfections significantly degrade the gyro performance. In addition, the Lynch-proposed-scheme is essentially nonlinear. As a consequence, the controller performance is hard to predict and analyze prior to real tests.In this dissertation, a novel demodulation method is developed to transform the original nonlinear control problem into a linear time invariant controller design problem. This technique is based on the averaging method proposed by Lynch [50] but enables the use of well studied linear system theory for MRIG controller design and analysis. The resulting controller design for MRIGs is much more tractable and the performance is rather predictable. This fundamental improvement also opens up new opportunities for implementing and analyzing control systems based on linear control theory.Two schemes are proposed in this dissertation to compensate for the parameter mismatches caused by fabrication imperfections. The first one is based on electrostatic spring softening and tuning. The basic operation principle is first introduced. Then a full derivation of this method on a real MRIG configuration is conducted. Experimental results confirm that this compensation scheme can significantly attenuate the parameter mismatch.The other compensation scheme considered in this dissertation is an adaptive compensation scheme consisting of three feedforward controllers. Each of them runs on top of the corresponding feedback control loop and estimates and compensates parameter mismatches in real time. We also present a stability and convergence analysis that shows such…

Subjects/Keywords: Mechanical engineering; Calibration; Control; Microscale; Rate Integrating Gyroscopes

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APA (6^th Edition):

Zhang, F. (2015). Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs). (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/42c4x70m

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zhang, Fu. “Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs).” 2015. Thesis, University of California – Berkeley. Accessed June 24, 2019. http://www.escholarship.org/uc/item/42c4x70m.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zhang, Fu. “Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs).” 2015. Web. 24 Jun 2019.

Vancouver:

Zhang F. Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs). [Internet] [Thesis]. University of California – Berkeley; 2015. [cited 2019 Jun 24]. Available from: http://www.escholarship.org/uc/item/42c4x70m.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zhang F. Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs). [Thesis]. University of California – Berkeley; 2015. Available from: http://www.escholarship.org/uc/item/42c4x70m

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

UCLA

17. Behbahani, Amir Hossein. Toward Perfection of Gyros! Modeling, Analysis, and Modification of Ring-Type Resonators.

Degree: Mechanical Engineering, 2018, UCLA

URL: http://www.escholarship.org/uc/item/6c78937j

► Gyroscopes are sensors that measure the rate of rotation of an object. One common type is a "Coriolis Vibratory Gyroscope" (CVG) which takes advantage of… (more)

▼ Gyroscopes are sensors that measure the rate of rotation of an object. One common type is a "Coriolis Vibratory Gyroscope" (CVG) which takes advantage of Coriolis coupling in sensing rotation. CVGs exploit two resonant modes for measuring the sensor's angular rate of rotation. The highest sensitivity to angular motion is achieved when the resonant modes have degenerate frequencies as this configuration provides the greatest signal-to-noise ratio (SNR) with respect to extrinsic (electronic) noise sources. One way to achieve degeneracy is to design an axisymmetric resonator such as the UCLA CVG. It is impossible to retain the symmetry during manufacturing process because small fabrication errors detune the modes of interest. To compensate for these fabrication errors, post-processing of the resonator to recover its optimal axisymmetric configuration is required. One process, considered here, is the perturbation of the resonator's mass distribution by removing mass from specific locations. Perturbing the stiffness of the structure is not permanent, and it requires relatively large size electronics. A technique which retains wafer-scale processing and packaging compatibility is described for customizing the dynamics of individual silicon resonators. The approach uses laser ablation of a protective conformal layer (Parylene-C) to expose silicon in regions that are targeted for mass removal by subsequent deep reactive-ion etching (DRIE). The technique is demonstrated on a planar axisymmetric resonator design whereby the frequency mismatches of a subset of the resonators are reduced to less than 100 mHz which is the mechanical bandwidth of the resonator.The model for the resonator is based on a perturbation analysis of ring dynamics which serves as a basis for the ring-type resonators. The perturbation expansion is found for the exact solution of imperfect rings for the case in which the damping is neglected. The results show excellent agreement with both Rayleigh-Ritz and finite element results. The perturbation model is refined and modified for multi-modal tuning where both n = 2 and n = 3 are considered. The search algorithm is also improved using linear programming and a branch and bound routine. The results are successfully demonstrated on a few devices.The damping mechanisms of this type of resonator are also studied. The thermoelastic damping which is the dominant damping mechanism in ring-type resonators is studied in detail for a ring structure. The equation of motion is derived and solved using strong form Galerkin method for imperfect rings. The imperfections studied are caused by the manufacturing processes (e.g., etch non-uniformities) and tuning the devices in practice. The analysis demonstrates a practical limitation in the tuning process where the damping asymmetries may not necessarily be removed even for the case that the frequencies are perfectly tuned. A general design guideline based on the geometry and material of the ring is presented. The temperature profile for the different materials is shown as…

Subjects/Keywords: Mechanical engineering; Design; Gyroscopes; Resonators; Sensors; Solid Mechanics; Tuning

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APA (6^th Edition):

Behbahani, A. H. (2018). Toward Perfection of Gyros! Modeling, Analysis, and Modification of Ring-Type Resonators. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/6c78937j

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Behbahani, Amir Hossein. “Toward Perfection of Gyros! Modeling, Analysis, and Modification of Ring-Type Resonators.” 2018. Thesis, UCLA. Accessed June 24, 2019. http://www.escholarship.org/uc/item/6c78937j.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Behbahani, Amir Hossein. “Toward Perfection of Gyros! Modeling, Analysis, and Modification of Ring-Type Resonators.” 2018. Web. 24 Jun 2019.

Vancouver:

Behbahani AH. Toward Perfection of Gyros! Modeling, Analysis, and Modification of Ring-Type Resonators. [Internet] [Thesis]. UCLA; 2018. [cited 2019 Jun 24]. Available from: http://www.escholarship.org/uc/item/6c78937j.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Behbahani AH. Toward Perfection of Gyros! Modeling, Analysis, and Modification of Ring-Type Resonators. [Thesis]. UCLA; 2018. Available from: http://www.escholarship.org/uc/item/6c78937j

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

18. Wang, Ren. Interface Circuit for a Multiple-Beam Tuning-Fork Gyroscope with High Quality Factors.

Degree: PhD, Mechanical Engineering, 2011, Old Dominion University

URL: https://digitalcommons.odu.edu/mae_etds/161

► This research work presents the design, theoretical analysis, fabrication, interface electronics, and experimental results of a Silicon-On-Insulator (SOI) based Multiple-Beam Tuning-Fork Gyroscope (MB-TFG). Based… (more)

Subjects/Keywords: Gyroscopes; Silicon-on-insulator; Aerospace Engineering; Automotive Engineering; Mechanical Engineering

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APA (6^th Edition):

Wang, R. (2011). Interface Circuit for a Multiple-Beam Tuning-Fork Gyroscope with High Quality Factors. (Doctoral Dissertation). Old Dominion University. Retrieved from https://digitalcommons.odu.edu/mae_etds/161

Chicago Manual of Style (16^th Edition):

Wang, Ren. “Interface Circuit for a Multiple-Beam Tuning-Fork Gyroscope with High Quality Factors.” 2011. Doctoral Dissertation, Old Dominion University. Accessed June 24, 2019. https://digitalcommons.odu.edu/mae_etds/161.

MLA Handbook (7^th Edition):

Wang, Ren. “Interface Circuit for a Multiple-Beam Tuning-Fork Gyroscope with High Quality Factors.” 2011. Web. 24 Jun 2019.

Vancouver:

Wang R. Interface Circuit for a Multiple-Beam Tuning-Fork Gyroscope with High Quality Factors. [Internet] [Doctoral dissertation]. Old Dominion University; 2011. [cited 2019 Jun 24]. Available from: https://digitalcommons.odu.edu/mae_etds/161.

Council of Science Editors:

Wang R. Interface Circuit for a Multiple-Beam Tuning-Fork Gyroscope with High Quality Factors. [Doctoral Dissertation]. Old Dominion University; 2011. Available from: https://digitalcommons.odu.edu/mae_etds/161

Rutgers University

19. Varkey, John Paul, 1984-. Human motion recognition using a wireless wearable system.

Degree: MS, Electrical and Computer Engineering, 2010, Rutgers University

URL: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000056812

► The future of human computer interaction systems lies in how intelligently these systems can take into account the user's context, that is, how well the… (more)

Subjects/Keywords: Human activity recognition; Wearable computers; Gyroscopes; Support vector machines; Accelerometers

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Varkey, John Paul, 1. (2010). Human motion recognition using a wireless wearable system. (Masters Thesis). Rutgers University. Retrieved from http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000056812

Chicago Manual of Style (16^th Edition):

Varkey, John Paul, 1984-. “Human motion recognition using a wireless wearable system.” 2010. Masters Thesis, Rutgers University. Accessed June 24, 2019. http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000056812.

MLA Handbook (7^th Edition):

Varkey, John Paul, 1984-. “Human motion recognition using a wireless wearable system.” 2010. Web. 24 Jun 2019.

Vancouver:

Varkey, John Paul 1. Human motion recognition using a wireless wearable system. [Internet] [Masters thesis]. Rutgers University; 2010. [cited 2019 Jun 24]. Available from: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000056812.

Council of Science Editors:

Varkey, John Paul 1. Human motion recognition using a wireless wearable system. [Masters Thesis]. Rutgers University; 2010. Available from: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000056812

University of Minnesota

20. Poling, Bryan. Towards A Framework For Simultaneous Feature Tracking And Segmentation.

Degree: PhD, Mathematics, 2016, University of Minnesota

URL: http://hdl.handle.net/11299/182179

► This is a collection of several works that I have done during my PhD research as a graduate student at the University of Minnesota. There… (more)

▼ This is a collection of several works that I have done during my PhD research as a graduate student at the University of Minnesota. There are three parts, each focusing on a different topic in machine learning and computer vision. The common theme underlying these works is the tracking of feature points in motion video and their segmentation by object. Abstracts for each part are included below. Abstract for Part I: We present a novel approach to rigid-body motion segmentation from two views. We use a previously developed nonlinear embedding of two-view point correspondences into a 9-dimensional space and identify the different motions by segmenting lower-dimensional subspaces. In order to overcome mixed and unknown dimensions of subspaces and nonuniform distributions along them we suggest the novel concept of global dimension and its minimization for clustering subspaces with some theoretical motivation. We propose a fast projected gradient algorithm for minimizing global dimension and thus segmenting motions from 2-views. We develop an outlier detection framework around the proposed method, and we present state-of-the-art results on outlier-free and outlier-corrupted two-view data for segmenting motion. Abstract for Part II: In this part, we present a framework for jointly tracking a collection of features in motion video, which enables sharing information between the different features in the scene. Our method exploits the fact that trajectories of features from locally rigid and semi-rigid scenes are approximately confined to low-dimensional subspaces, and it uses this fact to aid the tracking of poor-quality and non-corner-like features by filling in missing information from other, better feature points. Our method significantly improves tracking performance in real-world, poorly lit scenes, does not require explicit modeling of the structure or motion of the scene, and runs in real time on a single CPU core. Abstract for Part III: In this part, we employ low-cost gyroscopes to improve general purpose feature tracking. We use some of the same ideas from Part II, except instead of borrowing information from other features to aid the tracking of poor-quality features, we rely on independent estimates of optical flow from external inertial sensors. Most related previous methods use gyroscopes to initialize and bound the search for features. In contrast, we use them to regularize the tracking energy function so that they can directly assist in the tracking of ambiguous and poor-quality features. We demonstrate that our simple technique offers significant improvements in performance over conventional template-based tracking methods, and is in fact competitive with more complex and computationally expensive state-of-the-art trackers, but at a fraction of the computational cost. Additionally, we show that the practice of initializing template-based feature trackers like KLT (Kanade-Lucas-Tomasi) using gyro-predicted optical flow offers no advantage over using a careful optical-only initialization method, suggesting…

Subjects/Keywords: Feature; Gyroscopes; Hybrid Linear Modeling; Segmentation; Subspace Clustering; Tracking

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APA (6^th Edition):

Poling, B. (2016). Towards A Framework For Simultaneous Feature Tracking And Segmentation. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/182179

Chicago Manual of Style (16^th Edition):

Poling, Bryan. “Towards A Framework For Simultaneous Feature Tracking And Segmentation.” 2016. Doctoral Dissertation, University of Minnesota. Accessed June 24, 2019. http://hdl.handle.net/11299/182179.

MLA Handbook (7^th Edition):

Poling, Bryan. “Towards A Framework For Simultaneous Feature Tracking And Segmentation.” 2016. Web. 24 Jun 2019.

Vancouver:

Poling B. Towards A Framework For Simultaneous Feature Tracking And Segmentation. [Internet] [Doctoral dissertation]. University of Minnesota; 2016. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/11299/182179.

Council of Science Editors:

Poling B. Towards A Framework For Simultaneous Feature Tracking And Segmentation. [Doctoral Dissertation]. University of Minnesota; 2016. Available from: http://hdl.handle.net/11299/182179

University of Johannesburg

21. Spammer, Stephanus Johannes. A phase detection system with enhanced dynamic response for open-loop fibre-optic gyroscopes.

Degree: 2014, University of Johannesburg

URL: http://hdl.handle.net/10210/12153

D.Ing. (Electrical & Electronic Engineering)

Please refer to full text to view abstract

Subjects/Keywords: Fiber optics; Optical gyroscopes

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APA (6^th Edition):

Spammer, S. J. (2014). A phase detection system with enhanced dynamic response for open-loop fibre-optic gyroscopes. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/12153

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Spammer, Stephanus Johannes. “A phase detection system with enhanced dynamic response for open-loop fibre-optic gyroscopes.” 2014. Thesis, University of Johannesburg. Accessed June 24, 2019. http://hdl.handle.net/10210/12153.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Spammer, Stephanus Johannes. “A phase detection system with enhanced dynamic response for open-loop fibre-optic gyroscopes.” 2014. Web. 24 Jun 2019.

Vancouver:

Spammer SJ. A phase detection system with enhanced dynamic response for open-loop fibre-optic gyroscopes. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/10210/12153.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Spammer SJ. A phase detection system with enhanced dynamic response for open-loop fibre-optic gyroscopes. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/12153

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Johannesburg

22. Goosen, Gerhardus Rossouw. Using low cost sensors and kalman filtering for land-based vehicle attitude estimation.

Degree: 2011, University of Johannesburg

URL: http://hdl.handle.net/10210/4218

►

M.Ing.

Vehicle attitude is the most significant of the navigational parameters in terms of its influence on accumulated dead reckoning errors. To determine the attitude… (more)

Subjects/Keywords: Detectors; Kalman filtering; Gyroscopes; Magnetometer; Inclinometer; Vehicles - Mathematical models

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APA (6^th Edition):

Goosen, G. R. (2011). Using low cost sensors and kalman filtering for land-based vehicle attitude estimation. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/4218

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Goosen, Gerhardus Rossouw. “Using low cost sensors and kalman filtering for land-based vehicle attitude estimation.” 2011. Thesis, University of Johannesburg. Accessed June 24, 2019. http://hdl.handle.net/10210/4218.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Goosen, Gerhardus Rossouw. “Using low cost sensors and kalman filtering for land-based vehicle attitude estimation.” 2011. Web. 24 Jun 2019.

Vancouver:

Goosen GR. Using low cost sensors and kalman filtering for land-based vehicle attitude estimation. [Internet] [Thesis]. University of Johannesburg; 2011. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/10210/4218.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Goosen GR. Using low cost sensors and kalman filtering for land-based vehicle attitude estimation. [Thesis]. University of Johannesburg; 2011. Available from: http://hdl.handle.net/10210/4218

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

23. Lv, Xiaowei. Indoor localization in wireless sensor networks : Localisation indoor dans les réseaux de capteurs sans fil.

Degree: Docteur es, Optimisation et Sûreté des Systèmes, 2015, Troyes

URL: http://www.theses.fr/2015TROY0009

►

Ce manuscrit est dédié à la résolution du problème de localisation dans les réseaux de capteurs sans fil mobiles. Les méthodes développées se basent principalement… (more)

▼

Ce manuscrit est dédié à la résolution du problème de localisation dans les réseaux de capteurs sans fil mobiles. Les méthodes développées se basent principalement sur des caractéristiques de fingerprints ainsi que sur des informations de mobilité. Les premières s'attaquent aux valeurs de RSSI entre capteurs tandis que les deuxièmes prennent en considération la mobilité des capteurs mesurée à l'aide d'accéléromètres et de gyroscopes. La combinaison des données collectées est effectuée dans le cadre de l'analyse par intervalles, ou bien du filtrage de Kalman. Les travaux proposés introduisent des modèles de mobilité d'ordres un, deux ou trois, permettant d'approximer au mieux les trajectoires des capteurs à l'aide des accélérations mesurées. Ceux-là sont couplés à l'algorithme des K plus proches voisins, d'abord dans un système centralisé. Ensuite, les modèles de mobilités sont améliorés pour prendre en compte les rotations des nœuds. Une méthode de localisation décentralisée est également proposée dans ce qui suit, s'adaptant au mécanisme fonctionnel des réseaux de capteurs de grande échelle. Enfin, ce manuscrit propose une méthode de zonage visant à déterminer les zones dans lesquelles les capteurs résident. La méthode proposée aborde le problème de zonage en utilisant à la fois la théorie des fonctions de croyance et l'analyse par intervalles

This thesis is dedicated to solve the localization problem in mobile wireless sensor networks. It works mainly with fingerprints features and inertial movements information. The former tackles the RSSIs values between sensors while the latter deals with the objets movement attitude by using accelerometer and gyroscope. The combination of both information is performed in terms of interval analysis, or Kalman filtering. The proposed work introduces three orders mobility models to approximate nodes trajectories using accelerations, combined then to the weighted K nearest neighbors algorithm in a centralized scheme. Then the mobility models are extended up to the inertial information taking into consideration the rotations of the nodes. A decentralized localization method is also proposed in the following in view of the working mechanism of large scale sensor networks. Finally, this thesis proposes a zoning localization method aiming at determining the zones in which the nodes reside. The proposed method addresses the zoning problem by using both the belief functions theory and the interval analysis

Advisors/Committee Members: Snoussi, Hichem (thesis director), Mourad-Chehade, Farah (thesis director).

Subjects/Keywords: Réseaux de capteurs (technologie); Calcul sur des intervalles; Accéléromètres; Estimation, Théorie de l'; Kalman, filtrage de; Gyroscopes; Sensor networks; Interval analysis (Mathematics); Accelorometers; Estimation theory; Kalman filtering; Gyroscopes; 621.384

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lv, X. (2015). Indoor localization in wireless sensor networks : Localisation indoor dans les réseaux de capteurs sans fil. (Doctoral Dissertation). Troyes. Retrieved from http://www.theses.fr/2015TROY0009

Chicago Manual of Style (16^th Edition):

Lv, Xiaowei. “Indoor localization in wireless sensor networks : Localisation indoor dans les réseaux de capteurs sans fil.” 2015. Doctoral Dissertation, Troyes. Accessed June 24, 2019. http://www.theses.fr/2015TROY0009.

MLA Handbook (7^th Edition):

Lv, Xiaowei. “Indoor localization in wireless sensor networks : Localisation indoor dans les réseaux de capteurs sans fil.” 2015. Web. 24 Jun 2019.

Vancouver:

Lv X. Indoor localization in wireless sensor networks : Localisation indoor dans les réseaux de capteurs sans fil. [Internet] [Doctoral dissertation]. Troyes; 2015. [cited 2019 Jun 24]. Available from: http://www.theses.fr/2015TROY0009.

Council of Science Editors:

Lv X. Indoor localization in wireless sensor networks : Localisation indoor dans les réseaux de capteurs sans fil. [Doctoral Dissertation]. Troyes; 2015. Available from: http://www.theses.fr/2015TROY0009

Univerzitet u Beogradu

24. Tadić, Srđan V., 1978-. Одређивање трајектологије возила при судару употребом интегрисаног система сателитске и инерцијалне навигације.

Degree: Elektrotehnički fakultet, 2016, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:14243/bdef:Content/get

►

Телекомуникације - сателитски системи, инерцијална навигација, естимација / Telecommunications

Преко милион особа годишње изгуби живот у саобраћајним несрећама. Према подацима Светске Здравствене Организације, од 1896.… (more)

Subjects/Keywords: global navigation satellite systems; inertial navigation; navigation; microelectromechanical sensors; accelerometers; rate gyroscopes; vehicle crashes

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APA (6^th Edition):

Tadić, Srđan V., 1. (2016). Одређивање трајектологије возила при судару употребом интегрисаног система сателитске и инерцијалне навигације. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:14243/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tadić, Srđan V., 1978-. “Одређивање трајектологије возила при судару употребом интегрисаног система сателитске и инерцијалне навигације.” 2016. Thesis, Univerzitet u Beogradu. Accessed June 24, 2019. https://fedorabg.bg.ac.rs/fedora/get/o:14243/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tadić, Srđan V., 1978-. “Одређивање трајектологије возила при судару употребом интегрисаног система сателитске и инерцијалне навигације.” 2016. Web. 24 Jun 2019.

Vancouver:

Tadić, Srđan V. 1. Одређивање трајектологије возила при судару употребом интегрисаног система сателитске и инерцијалне навигације. [Internet] [Thesis]. Univerzitet u Beogradu; 2016. [cited 2019 Jun 24]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:14243/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tadić, Srđan V. 1. Одређивање трајектологије возила при судару употребом интегрисаног система сателитске и инерцијалне навигације. [Thesis]. Univerzitet u Beogradu; 2016. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:14243/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Hong Kong University of Science and Technology

25. Wong, Mei-shing. Design, analysis and materials preparation for micro-gyroscope.

Degree: 1996, Hong Kong University of Science and Technology

URL: https://doi.org/10.14711/thesis-b519388 ; http://repository.ust.hk/ir/bitstream/1783.1-4417/1/th_redirect.html

► Nowadays, the interest in an emerging field - Micro-electromechanical systems (MEMS) - has been increased swiftly. In fact, it has been predicted that the MEMS… (more)

▼ Nowadays, the interest in an emerging field - Micro-electromechanical systems (MEMS) - has been increased swiftly. In fact, it has been predicted that the MEMS will be a core manufacturing technology in the near future and fundamentally change the way human and machines interact with the physical world. Among these MEMS devices, the micro-gyroscope has been received much attention due to its wide range of applications such as in missile control in the military sector, global positioning systems, crash sensors in the automotive industry and stabilization systems used in video cameras. In this thesis, the design, analysis and materials preparation of a micro-gyroscope using pizeoelectric material as the sensing element is presented. In the materials selection part of this thesis, the results of study of various piezoelectric materials are pursuited. As a result of this work, Aluminum Nitride (AlN), Zinc Oxide (ZnO) and Lead Zirconate Titanate (PZT) were chosen for further study due to their ease of fabrication and piezoelectric response. In the next part of this thesis, the principle of the micro-gyroscope is presented and its output voltage response is derived, calculated, and compared among the three piezoelectric materials. The calculated results show that PZT gives the largest output voltage response and hence efforts are placed on PZT in both physical modeling and materials preparation. The physical modeling of the micro-gyroscope is investigated by measuring the output voltage characteristics of the PZT crystal and the results found are in agreement with the theoretical predictions. Moreover, the layout design with different structures are drawn to test for different approaches for the proposed micro-gyroscope. Finally, procedures and techniques of using sol-gel method are presented, from which crack-free PZT with perovskite structure can be obtained on both ITO Corning glass and silicon substrate. Therefore, the flexibility of using PZT for fabrication of the micro-gyroscope can be visualized.

Subjects/Keywords: Gyroscopes – Design and construction; Piezoelectric materials

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APA (6^th Edition):

Wong, M. (1996). Design, analysis and materials preparation for micro-gyroscope. (Thesis). Hong Kong University of Science and Technology. Retrieved from https://doi.org/10.14711/thesis-b519388 ; http://repository.ust.hk/ir/bitstream/1783.1-4417/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wong, Mei-shing. “Design, analysis and materials preparation for micro-gyroscope.” 1996. Thesis, Hong Kong University of Science and Technology. Accessed June 24, 2019. https://doi.org/10.14711/thesis-b519388 ; http://repository.ust.hk/ir/bitstream/1783.1-4417/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wong, Mei-shing. “Design, analysis and materials preparation for micro-gyroscope.” 1996. Web. 24 Jun 2019.

Vancouver:

Wong M. Design, analysis and materials preparation for micro-gyroscope. [Internet] [Thesis]. Hong Kong University of Science and Technology; 1996. [cited 2019 Jun 24]. Available from: https://doi.org/10.14711/thesis-b519388 ; http://repository.ust.hk/ir/bitstream/1783.1-4417/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wong M. Design, analysis and materials preparation for micro-gyroscope. [Thesis]. Hong Kong University of Science and Technology; 1996. Available from: https://doi.org/10.14711/thesis-b519388 ; http://repository.ust.hk/ir/bitstream/1783.1-4417/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Hong Kong University of Science and Technology

26. Hui, Jane Chung Man. Integrated micromechanical gyroscope.

Degree: 1996, Hong Kong University of Science and Technology

URL: https://doi.org/10.14711/thesis-b521792 ; http://repository.ust.hk/ir/bitstream/1783.1-4427/1/th_redirect.html

► Microelectromechanical systems (MEMS) is an evolution and expansion of micromachining technology. MEMS builds on the processes, thin film technology and materials used in VLSI technology,… (more)

Subjects/Keywords: Gyroscopes – Design and construction; Piezoelectric materials

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APA (6^th Edition):

Hui, J. C. M. (1996). Integrated micromechanical gyroscope. (Thesis). Hong Kong University of Science and Technology. Retrieved from https://doi.org/10.14711/thesis-b521792 ; http://repository.ust.hk/ir/bitstream/1783.1-4427/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hui, Jane Chung Man. “Integrated micromechanical gyroscope.” 1996. Thesis, Hong Kong University of Science and Technology. Accessed June 24, 2019. https://doi.org/10.14711/thesis-b521792 ; http://repository.ust.hk/ir/bitstream/1783.1-4427/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hui, Jane Chung Man. “Integrated micromechanical gyroscope.” 1996. Web. 24 Jun 2019.

Vancouver:

Hui JCM. Integrated micromechanical gyroscope. [Internet] [Thesis]. Hong Kong University of Science and Technology; 1996. [cited 2019 Jun 24]. Available from: https://doi.org/10.14711/thesis-b521792 ; http://repository.ust.hk/ir/bitstream/1783.1-4427/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hui JCM. Integrated micromechanical gyroscope. [Thesis]. Hong Kong University of Science and Technology; 1996. Available from: https://doi.org/10.14711/thesis-b521792 ; http://repository.ust.hk/ir/bitstream/1783.1-4427/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Berkeley

27. Goericke, Fabian Thomas. Aluminum Nitride Sensors for Harsh Environments.

Degree: Mechanical Engineering, 2013, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/7kq5s183

► Harsh environment applications include high temperature, pressure and mechanical shock. Aluminum nitride is a strong ceramic material with very good high temperature survivability. It also… (more)

Subjects/Keywords: Mechanical engineering; Electrical engineering; Materials Science; accelerometers; gyroscopes; inertial sensors; MEMS; microsystem; tuning forks

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APA (6^th Edition):

Goericke, F. T. (2013). Aluminum Nitride Sensors for Harsh Environments. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/7kq5s183

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Goericke, Fabian Thomas. “Aluminum Nitride Sensors for Harsh Environments.” 2013. Thesis, University of California – Berkeley. Accessed June 24, 2019. http://www.escholarship.org/uc/item/7kq5s183.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Goericke, Fabian Thomas. “Aluminum Nitride Sensors for Harsh Environments.” 2013. Web. 24 Jun 2019.

Vancouver:

Goericke FT. Aluminum Nitride Sensors for Harsh Environments. [Internet] [Thesis]. University of California – Berkeley; 2013. [cited 2019 Jun 24]. Available from: http://www.escholarship.org/uc/item/7kq5s183.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Goericke FT. Aluminum Nitride Sensors for Harsh Environments. [Thesis]. University of California – Berkeley; 2013. Available from: http://www.escholarship.org/uc/item/7kq5s183

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Dayton

28. Uppalapati, Balaadithya. Design and Analysis of Wafer-Level Vacuum-Encapsulated Disk Resonator Gyroscope Using a Commercial MEMS Process.

Degree: MS(M.S.), Electrical Engineering, 2017, University of Dayton

URL: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1510764485530995

► In this Thesis, the design and analysis of a mode-matched Disk Resonator Gyroscope (DRG) characterized by high Quality factor exceeding 1 million is presented. The… (more)

Subjects/Keywords: Electrical Engineering; Mechanical Engineering; MEMS; gyroscopes; disk resonator gyroscope; MIDIS; vacuum encapsulation; inertial sensors

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APA (6^th Edition):

Uppalapati, B. (2017). Design and Analysis of Wafer-Level Vacuum-Encapsulated Disk Resonator Gyroscope Using a Commercial MEMS Process. (Masters Thesis). University of Dayton. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=dayton1510764485530995

Chicago Manual of Style (16^th Edition):

Uppalapati, Balaadithya. “Design and Analysis of Wafer-Level Vacuum-Encapsulated Disk Resonator Gyroscope Using a Commercial MEMS Process.” 2017. Masters Thesis, University of Dayton. Accessed June 24, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1510764485530995.

MLA Handbook (7^th Edition):

Uppalapati, Balaadithya. “Design and Analysis of Wafer-Level Vacuum-Encapsulated Disk Resonator Gyroscope Using a Commercial MEMS Process.” 2017. Web. 24 Jun 2019.

Vancouver:

Uppalapati B. Design and Analysis of Wafer-Level Vacuum-Encapsulated Disk Resonator Gyroscope Using a Commercial MEMS Process. [Internet] [Masters thesis]. University of Dayton; 2017. [cited 2019 Jun 24]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1510764485530995.

Council of Science Editors:

Uppalapati B. Design and Analysis of Wafer-Level Vacuum-Encapsulated Disk Resonator Gyroscope Using a Commercial MEMS Process. [Masters Thesis]. University of Dayton; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1510764485530995

University of Waterloo

29. Effa, Dawit (David). Design, Fabrication and Characterization of MEMS Gyroscopes Based on Frequency Modulation.

Degree: 2018, University of Waterloo

URL: http://hdl.handle.net/10012/13490

► Conventional amplitude modulated (AM) open loop MEMS gyroscopes experience a significant performance trade-off between having a large bandwidth or high sensitivity. It is impossible to… (more)

▼ Conventional amplitude modulated (AM) open loop MEMS gyroscopes experience a significant performance trade-off between having a large bandwidth or high sensitivity. It is impossible to improve both metrics at the same time without increasing the mass of the gyroscope or introducing a closed loop (force feedback) system into the device design. Introducing a closed loop system or increasing the proof mass on the other hand will surge power consumption. Consequently, it is difficult to maintain consistently high performance while scaling down the device size. Furthermore, bias stability, bias repeatability, reliability, nonlinearity and other performance metrics remain primary concerns as designers look to expand MEMS gyroscopes into areas like space, military and navigation applications. Industries and academics carried out extensive research to address these limitations in conventional AM MEMS gyroscope design. This research primarily aims to improve MEMS gyroscope performance by integrating a frequency modulated (FM) readout system into the design using a cantilever beam and microplate design. The FM resonance sensing approach has been demonstrated to provide better performance than the traditional AM sensing method in similar applications (e.g., Atomic Force Microscope). The cantilever beam MEMS gyroscope is specifically designed to minimize error sources that corrupt the Coriolis signal such as operating temperature, vibration and packaging stress. Operating temperature imposes enormous challenges to gyroscope design, introducing a thermal noise and drift that degrades device performance. The cantilever beam mass gyroscope system is free on one side and can therefore minimize noise caused by both thermal effects and packaging stress. The cantilever beam design is also robust to vibrations (it can reject vibrations by sensing the orthogonally arranged secondary gyroscope) and minimizes cross-axis sensitivity. By alleviating the negative impacts of operating environment in MEMS gyroscope design, reliable, robust and high-performance angular rate measurements can be realized, leading to a wide range of applications including dynamic vehicle control, navigation/guidance systems, and IOT applications. The FM sensing approach was also investigated using a traditional crab-leg design. Tested under the same conditions, the crab-leg design provided a direct point of comparison for assessing the performance of the cantilever beam gyroscope. To verify the feasibility of the FM detection method, these gyroscopes were fabricated using commercially available MIDIS™ process (Teledyne Dalsa Inc.), which provides 2 μm capacitive gaps and 30 μm structural layer thickness. The process employs 12 masks and hermetically sealed (10mTorr) packaging to ensure a higher quality factor. The cantilever beam gyroscope is designed such that the driving and sensing mode resonant frequency is 40.8 KHz with 0.01% mismatch. Experimental results demonstrated that the natural frequency of the first two modes shift linearly with the angular speed…

Subjects/Keywords: MEMS Gyroscope; Frequency Modulated MEMS Gyroscope; MEMS Gyroscope Dynamic Modeling; Cantilever Gyroscopes

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Effa, D. (. (2018). Design, Fabrication and Characterization of MEMS Gyroscopes Based on Frequency Modulation. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/13490

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Effa, Dawit (David). “Design, Fabrication and Characterization of MEMS Gyroscopes Based on Frequency Modulation.” 2018. Thesis, University of Waterloo. Accessed June 24, 2019. http://hdl.handle.net/10012/13490.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Effa, Dawit (David). “Design, Fabrication and Characterization of MEMS Gyroscopes Based on Frequency Modulation.” 2018. Web. 24 Jun 2019.

Vancouver:

Effa D(. Design, Fabrication and Characterization of MEMS Gyroscopes Based on Frequency Modulation. [Internet] [Thesis]. University of Waterloo; 2018. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/10012/13490.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Effa D(. Design, Fabrication and Characterization of MEMS Gyroscopes Based on Frequency Modulation. [Thesis]. University of Waterloo; 2018. Available from: http://hdl.handle.net/10012/13490

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Michigan

30. Hsiao, Hsien-kai. Active Integrated Optic Devices for Sensing: Optical Rate Gyroscopes and Stellar Interferometers.

Degree: PhD, Electrical Engineering, 2010, University of Michigan

URL: http://hdl.handle.net/2027.42/77701

► Integrated optical devices are free from the alignment and stability issues that bedevil bulk optical devices and systems. Integrated optical devices are now widely deployed… (more)

▼ Integrated optical devices are free from the alignment and stability issues that bedevil bulk optical devices and systems. Integrated optical devices are now widely deployed in fiber optic telecommunication systems and as sensor components. This thesis is a theoretical and experimental study of two new integrated optical sensors - an integrated optic ring resonator gyroscope for measuring angular rotation rate and an integrated optic beam combiner for stellar interferometry. Although passive integrated optic ring resonators for gyroscopes have been previously reported, little work has been performed for active rings. The sensitivity of the gyroscope is limited by the propagation losses in the ring, and hence can be improved by the introduction of loss-compensating gain inside the ring. In this thesis the first active ring resonator for gyroscopic applications is designed, fabricated and characterized. A 1.6 cm diameter active ring resonator is fabricated in a neodymium-doped glass by silver ion exchange. The finesse of the ring resonator is measured and is observed to increase from approximately 11 to 250 when the neodymium ions inside the ring are optically pumped to produce gain. The ultimate sensitivity of a ring resonator gyroscope is shown from theoretical considerations to be fundamentally limited by the spontaneous emission noise generated within the gain medium. A closed form expression for this sensitivity is derived. Integrated optic beam combiners offer many advantages over conventional bulk optic implementations for astronomical imaging. To date, integrated optic beam combiners have only been demonstrated at operating wavelengths below 2 μm. Operation in the mid-IR, however, is highly desirable. In this thesis an integrated optic beam combiner for stellar interferometry that operates in the mid-IR is demonstrated for the first time. The device is fabricated on a lithium niobate substrate for operation in the vicinity of 3.4 μm. Using this device, white-light, mid-infrared, fringes, as well as electro-optic on-chip fringe scanning, is demonstrated in the laboratory. A theoretical design technique based on three coupled waveguides is developed to achieve fully achromatic, broadband, polarization-insensitive, lossless beam combining. This design may make it possible to achieve the very deep broadband nulls needed for exoplanet searching. Advisors/Committee Members: Winick, Kim A. (committee member), Galvanauskas, Almantas (committee member), Monnier, John D. (committee member), Winful, Herbert Graves (committee member).

Subjects/Keywords: Optical Sensors; Gyroscopes; Ring Resonators; Stellar Interferometers; Integrated Optics; Directional Couplers; Electrical Engineering; Engineering

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hsiao, H. (2010). Active Integrated Optic Devices for Sensing: Optical Rate Gyroscopes and Stellar Interferometers. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/77701

Chicago Manual of Style (16^th Edition):

Hsiao, Hsien-kai. “Active Integrated Optic Devices for Sensing: Optical Rate Gyroscopes and Stellar Interferometers.” 2010. Doctoral Dissertation, University of Michigan. Accessed June 24, 2019. http://hdl.handle.net/2027.42/77701.

MLA Handbook (7^th Edition):

Hsiao, Hsien-kai. “Active Integrated Optic Devices for Sensing: Optical Rate Gyroscopes and Stellar Interferometers.” 2010. Web. 24 Jun 2019.

Vancouver:

Hsiao H. Active Integrated Optic Devices for Sensing: Optical Rate Gyroscopes and Stellar Interferometers. [Internet] [Doctoral dissertation]. University of Michigan; 2010. [cited 2019 Jun 24]. Available from: http://hdl.handle.net/2027.42/77701.

Council of Science Editors:

Hsiao H. Active Integrated Optic Devices for Sensing: Optical Rate Gyroscopes and Stellar Interferometers. [Doctoral Dissertation]. University of Michigan; 2010. Available from: http://hdl.handle.net/2027.42/77701

Open Access Theses and Dissertations