You searched for subject:(Automotive).
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University of Oxford
1.
Pease, Gareth.
Applications of optimal control for emissions management in road vehicles.
Degree: PhD, 2019, University of Oxford
URL: http://ora.ox.ac.uk/objects/uuid:d6ccd728-46e8-4905-a35a-a066f86525dc 
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.804392
► Improvements in the availability of sensed and actuated vehicular systems have increased the opportunity for applying automatic control. Classic methods for designing control architectures are…
(more)
▼ Improvements in the availability of sensed and actuated vehicular systems have increased the opportunity for applying automatic control. Classic methods for designing control architectures are no longer sufficient due to the highly non-linear behaviour and heavy coupling between sub-systems. As a result, there is scope to employ computationally powerful optimisation techniques to investigate design trade-offs in these increasingly complex systems. This thesis intends to take a multi-faceted look into the use of powerful optimal control techniques to solve some of the control problems arising in the automotive sector. In particular, a number of different control problems focused on emissions management are considered. The first scenario relates to the fuel optimal control of a road vehicle, with a specific focus generating fuel-optimal drive cycle trajectories incorporating emissions constraints. A simplified model will be used initially to examine the solution structure and highlight any important features which occur in the solving of such eco-driving problems. Additionally, there are comparisons to be made between using a continuously variable transmission and a more traditional discrete gearbox. The second scenario considers an optimal driving problem for a vehicle equipped hybrid electric powertrain with a thermal aftertreatment model. A large percentage of tailpipe emissions are produced when the three-way catalytic converter is cold. Increased flexibility of power delivery enables the engine to be powered greater than the tractive demand, which prompts quicker heating and thus producing less total emissions. The drawback to this method is an increase in the tailpipe flowrates during this heating period. The possibility and scope for the reduction of emissions is considered. The final scenario considered in this thesis will cover the optimal control of gasoline engines with combustion mode switching events. In particular, a turbocharged gasoline engine equipped dual-independent variable valve timing is considered. For engines operating in a stoichiometric regime, three-way catalytic converters are effective at reducing emissions. If the combustion mode is switched to lean, there is an increase in the tailpipe nitrous oxides (NOx). In order to avoid this, a lean-NOx trap is installed in the tailpipe, which requires periodic regeneration to ensure its effectiveness. Dynamic compensation of all actuators vastly improves the performance of the switching control. This thesis presents a number of suitable modelling techniques to investigate these scenarios, the results of which can be used to aid in the design of realtime control algorithms.
Subjects/Keywords: Automotive Powertrain Control; Automotive Emissions
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APA (6th Edition):
Pease, G. (2019). Applications of optimal control for emissions management in road vehicles. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:d6ccd728-46e8-4905-a35a-a066f86525dc ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.804392
Chicago Manual of Style (16th Edition):
Pease, Gareth. “Applications of optimal control for emissions management in road vehicles.” 2019. Doctoral Dissertation, University of Oxford. Accessed January 18, 2021.
http://ora.ox.ac.uk/objects/uuid:d6ccd728-46e8-4905-a35a-a066f86525dc ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.804392.
MLA Handbook (7th Edition):
Pease, Gareth. “Applications of optimal control for emissions management in road vehicles.” 2019. Web. 18 Jan 2021.
Vancouver:
Pease G. Applications of optimal control for emissions management in road vehicles. [Internet] [Doctoral dissertation]. University of Oxford; 2019. [cited 2021 Jan 18].
Available from: http://ora.ox.ac.uk/objects/uuid:d6ccd728-46e8-4905-a35a-a066f86525dc ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.804392.
Council of Science Editors:
Pease G. Applications of optimal control for emissions management in road vehicles. [Doctoral Dissertation]. University of Oxford; 2019. Available from: http://ora.ox.ac.uk/objects/uuid:d6ccd728-46e8-4905-a35a-a066f86525dc ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.804392
Clemson University
2.
Zhou, Xianjie.
Formulation of an interactive ruled-based design envelope for ensuring aftermarket vehicle dynamics compliance.
Degree: 2017, Clemson University
URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10246430
► The objective of this research is to develop an integrated system engineering methodology for the customization design to maximize vehicle performance upgrade freedom while…
(more)
▼ The objective of this research is to develop an integrated system engineering methodology for the customization design to maximize vehicle performance upgrade freedom while ensuring vehicle dynamics compliance. A post-delivery modification framework, which is led by an aftermarket umbrella organization and involve various stakeholders has been established. The umbrella organization will be in charge of developing the design envelope and distribute to various aftermarket kit suppliers to generate specific products according to their brand essence. A generic mathematical representation of a (proprietary) ESC system has been developed for virtual certification purposes. This approach is a cost-effective alternative to physical on-road testing and hardware-in-the-loop (HiL) simulations. Furthermore, based on the stability control model, the modification impacts on the vehicle dynamics and stability performance was assessed using the Taguchi design of experiment (DOE) method. DOE results provide three distinct ways for supporting aftermarket modifications. First, main effects help customizers to understand which modification bring benefits or risks. Second, a regression model of the lateral offset metrics helps suppliers to predict closed-loop performances with open-loop testing information which require much less time and cost. Finally, the pass/fail criteria regarding federally mandated ESC compliance (FMVSS 126) brought on the ‘Pass Region’ which consisted of feasible configurations such that customizers may configure their options within a safe zone. Each of these methods complements others for supporting the aftermarket modification. In order to improve the computation efficiency, two lower fidelity models were developed: A linear model and a surrogate model. The linear model is derived from the high fidelity model with reduced degrees of freedom (DOF) and linearized parameters. Tire cornering stiffness is treated as constants for gentle maneuvers, and varying parameters for high-dynamic driving maneuver. The linear system is either a linear time-invariant (LTI) system or a linear parameter-varying (LPV) system depending on the application context. The PD yaw stability control algorithm, which is inherited from the high fidelity model, was simplified but retained with critical nonlinear features. A quadratic regression model that was dedicated for compliance metrics was developed as a surrogate model incorporated in an interactive rule-based design envelope. An interactive design envelope has been created incorporating the rules established using computational efficient linear and surrogate models. The constraint satisfaction problem is described in the nonlinear programming context and solved using sequential quadratic programming. The quasiconvexity of the design space, which is the necessary condition for the proposed approach, is also investigated by inspecting the constraint functions. Finally, two case studies were developed to demonstrate the framework…
Subjects/Keywords: Automotive engineering
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APA (6th Edition):
Zhou, X. (2017). Formulation of an interactive ruled-based design envelope for ensuring aftermarket vehicle dynamics compliance. (Thesis). Clemson University. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10246430
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Zhou, Xianjie. “Formulation of an interactive ruled-based design envelope for ensuring aftermarket vehicle dynamics compliance.” 2017. Thesis, Clemson University. Accessed January 18, 2021.
http://pqdtopen.proquest.com/#viewpdf?dispub=10246430.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zhou, Xianjie. “Formulation of an interactive ruled-based design envelope for ensuring aftermarket vehicle dynamics compliance.” 2017. Web. 18 Jan 2021.
Vancouver:
Zhou X. Formulation of an interactive ruled-based design envelope for ensuring aftermarket vehicle dynamics compliance. [Internet] [Thesis]. Clemson University; 2017. [cited 2021 Jan 18].
Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10246430.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zhou X. Formulation of an interactive ruled-based design envelope for ensuring aftermarket vehicle dynamics compliance. [Thesis]. Clemson University; 2017. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10246430
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
3.
Dey, Koustav.
CHARACTERIZATION AND REJECTION OF NOISE FROM IN-CYLINDER
PRESSURE TRACES IN A DIESEL ENGINE.
Degree: MA, Electrical and Computer
Engineering, 2012, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/121
► Diesel engine in-cylinder pressure analysis is important for engine research and diagnosis. It has been a subject of interest right from the inception of internal…
(more)
▼ Diesel engine in-cylinder pressure analysis
is important for engine research and diagnosis. It has been a
subject of interest right from the inception of internal combustion
engines. Engine cylinder pressure measurements provide insight into
the combustion process and the accuracy of these measurements
governs the quality of analyses of different combustion modes of
the engine. Since the in-cylinder pressure increases abruptly after
the start of combustion, non-flush mounting of the pressure
transducer creates standing/resonant waves in the access passage
which severely affect the recorded pressure fidelity by introducing
undesired noise. The challenge is to get rid of these pressure
pulsations and characterize the unaccounted noise which can lead to
erroneous determination of different combustion parameters and
characteristics. This work focuses on online filtering of the noisy
pressure data so as to obviate the need of any post-processing for
combustion and noise analysis. An online filtering algorithm is
defined which is a combination of a five-point moving average
filter and a forward and reverse Butterworth digital filter. The
filter is tested for its robustness over different engine operating
conditions such as engine load, speed, boost etc. The cut-off
frequency of the filter is determined on a cycle-by-cycle basis
using an algorithm based on the power spectral density of the
pressure signal. The noise component is segregated from the
pressure trace by means of pressure decomposition technique and the
peak noise power is attributed to the access passage resonance
frequency. Further development of this approach can be used to
achieve optimal combustion control by means of the development of
optimal injection strategies in order to fulfill emission reduction
and performance requirements in Diesel
engines.
Advisors/Committee Members: Shahrrava, Behnam (Electrical and Computer Engineering).
Subjects/Keywords: Automotive engineering.
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APA (6th Edition):
Dey, K. (2012). CHARACTERIZATION AND REJECTION OF NOISE FROM IN-CYLINDER
PRESSURE TRACES IN A DIESEL ENGINE. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/121
Chicago Manual of Style (16th Edition):
Dey, Koustav. “CHARACTERIZATION AND REJECTION OF NOISE FROM IN-CYLINDER
PRESSURE TRACES IN A DIESEL ENGINE.” 2012. Masters Thesis, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/121.
MLA Handbook (7th Edition):
Dey, Koustav. “CHARACTERIZATION AND REJECTION OF NOISE FROM IN-CYLINDER
PRESSURE TRACES IN A DIESEL ENGINE.” 2012. Web. 18 Jan 2021.
Vancouver:
Dey K. CHARACTERIZATION AND REJECTION OF NOISE FROM IN-CYLINDER
PRESSURE TRACES IN A DIESEL ENGINE. [Internet] [Masters thesis]. National Library of Canada; 2012. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/121.
Council of Science Editors:
Dey K. CHARACTERIZATION AND REJECTION OF NOISE FROM IN-CYLINDER
PRESSURE TRACES IN A DIESEL ENGINE. [Masters Thesis]. National Library of Canada; 2012. Available from: http://scholar.uwindsor.ca/etd/121
4.
Martin, Kevin.
Plug-in Hybrid Electric Vehicle Control Strategies Utilizing
Multiple Peaking Power Sources.
Degree: MA, Mechanical, Automotive, and Materials
Engineering, 2010, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/198
► Conventional automobiles operate with the use of internal combustion engines (ICEs) which run on fossil fuels as a source of energy. However, the conventional ICE…
(more)
▼ Conventional automobiles operate with the use
of internal combustion engines (ICEs) which run on fossil fuels as
a source of energy. However, the conventional ICE provides poor
fuel economy, as well as producing air pollutants. A Plug-in Hybrid
Electric Vehicle (PHEV) has the potential to run solely on free
energy with zero emissions as long as it operates within its all
electric range. Active control techniques must be used in order to
ensure optimum efficiency of the PHEV once the ICE is operated. The
objective of the proposed research is to create a control strategy
utilizing batteries as well as ultracapacitors suitable for a PHEV
configuration. The control strategy will be evaluated through
numerical models under several driving cycles as well as emergency
maneuvers in order to ensure its effectiveness at reducing fuel
consumption and improving engine efficiency.
Advisors/Committee Members: Minaker, Bruce (Mechanical, Automotive and Materials Engineering).
Subjects/Keywords: Engineering; Automotive.
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APA ·
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Manager
APA (6th Edition):
Martin, K. (2010). Plug-in Hybrid Electric Vehicle Control Strategies Utilizing
Multiple Peaking Power Sources. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/198
Chicago Manual of Style (16th Edition):
Martin, Kevin. “Plug-in Hybrid Electric Vehicle Control Strategies Utilizing
Multiple Peaking Power Sources.” 2010. Masters Thesis, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/198.
MLA Handbook (7th Edition):
Martin, Kevin. “Plug-in Hybrid Electric Vehicle Control Strategies Utilizing
Multiple Peaking Power Sources.” 2010. Web. 18 Jan 2021.
Vancouver:
Martin K. Plug-in Hybrid Electric Vehicle Control Strategies Utilizing
Multiple Peaking Power Sources. [Internet] [Masters thesis]. National Library of Canada; 2010. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/198.
Council of Science Editors:
Martin K. Plug-in Hybrid Electric Vehicle Control Strategies Utilizing
Multiple Peaking Power Sources. [Masters Thesis]. National Library of Canada; 2010. Available from: http://scholar.uwindsor.ca/etd/198
5.
Rieveley, Robert.
The Effect Of Direct Yaw Moment On Human Controlled Vehicle
Systems.
Degree: PhD, Mechanical, Automotive, and Materials
Engineering, 2010, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/464
► Advances in computing technology have had a profound impact on the design and development of modern vehicle systems. These advances have provided the basis for…
(more)
▼ Advances in computing technology have had a
profound impact on the design and development of modern vehicle
systems. These advances have provided the basis for virtual design
and testing in simulated environments, as well as the development
of active control systems capable of providing improved vehicle
safety, efficiency, and performance. Continued developments in
hybrid powertrains and on-board computing will provide for greater
amounts of control, through the integration of larger numbers of
actuators and more complex control schemes. The intention of this
research is to investigate the effects of advanced vehicle dynamics
controls on the human operated vehicle system. Hybrid electric
vehicle systems incorporating multiple electric drive motors are
capable of actively distributing drive and braking torque to the
individual wheels of the vehicle. The modulation of these torques
can be used to optimize or alter the dynamic response of the
vehicle, through the application of a direct yaw moment. A control
structure capable of determining and dynamically allocating
appropriate control signals for over-actuated vehicle systems is
proposed. A dynamic simulation of a virtual prototype BMW 330i is
utilized to evaluate the effects of active drive torque vectoring
on vehicle response. The effects of the proposed system on the
human operator are also evaluated, through the use of driver model
in-the-loop simulations. The results presented indicate the
promising potential of direct yaw moment control in modulating the
response of human operated vehicle systems. The interactions
between the human driver model and control systems were shown to be
favourable. The scientific contributions and implications of the
research are detailed, including application of closed-loop
simulation to engineering education. Conclusions on the efficacy of
developed models, methodologies and systems are given. Finally,
recommendations on potential improvements and future research
regarding vehicle modelling and motion control are
provided.
Advisors/Committee Members: Frise, Peter (Mechanical, Automotive and Materials Engineering).
Subjects/Keywords: Engineering; Automotive.
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APA ·
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Manager
APA (6th Edition):
Rieveley, R. (2010). The Effect Of Direct Yaw Moment On Human Controlled Vehicle
Systems. (Doctoral Dissertation). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/464
Chicago Manual of Style (16th Edition):
Rieveley, Robert. “The Effect Of Direct Yaw Moment On Human Controlled Vehicle
Systems.” 2010. Doctoral Dissertation, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/464.
MLA Handbook (7th Edition):
Rieveley, Robert. “The Effect Of Direct Yaw Moment On Human Controlled Vehicle
Systems.” 2010. Web. 18 Jan 2021.
Vancouver:
Rieveley R. The Effect Of Direct Yaw Moment On Human Controlled Vehicle
Systems. [Internet] [Doctoral dissertation]. National Library of Canada; 2010. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/464.
Council of Science Editors:
Rieveley R. The Effect Of Direct Yaw Moment On Human Controlled Vehicle
Systems. [Doctoral Dissertation]. National Library of Canada; 2010. Available from: http://scholar.uwindsor.ca/etd/464
6.
Bhattacharya, Sandeep.
Analysis of Second-Phase Particle Fracture in Hypereutectic
Aluminum-Silicon Alloys.
Degree: MA, Mechanical, Automotive, and Materials
Engineering, 2009, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/175
► Vickers micro-indentation tests were performed on second-phase particles of Al- 18.5wt.%Si and results were compared with those of monolithic silicon. Damage microstructures beneath indented second-phase…
(more)
▼ Vickers micro-indentation tests were
performed on second-phase particles of Al- 18.5wt.%Si and results
were compared with those of monolithic silicon. Damage
microstructures beneath indented second-phase silicon particles
were studied to determine the crack morphologies causing particle
fracture, and also to identify the role of indentation-induced
phase transformations on subsurface damage. Plastic deformation at
low loads and volume expansion due to subsurface crack formation at
high loads (>650 mN) were responsible for pile-up formations
around the indentations. The probability of lateral cracks reaching
the surface and causing particle fracture was shown to obey Weibull
statistics with a low modulus. Diamond cubic Si-I transformed into
bcc Si-III and rhombohedral Si-XII, under an estimated indentation
pressure of 19.3 GPa. Crosssectional FIB and TEM revealed a
semi-circular plastic core and subsurface lateral crack pattern
below the residual indents, in addition to a localized, amorphous
silicon zone below the plastic core at the median crack
edges.
Advisors/Committee Members: Alpas, Ahmet (Mechanical, Automotive & Materials Engineering).
Subjects/Keywords: Engineering; Automotive.
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APA ·
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APA (6th Edition):
Bhattacharya, S. (2009). Analysis of Second-Phase Particle Fracture in Hypereutectic
Aluminum-Silicon Alloys. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/175
Chicago Manual of Style (16th Edition):
Bhattacharya, Sandeep. “Analysis of Second-Phase Particle Fracture in Hypereutectic
Aluminum-Silicon Alloys.” 2009. Masters Thesis, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/175.
MLA Handbook (7th Edition):
Bhattacharya, Sandeep. “Analysis of Second-Phase Particle Fracture in Hypereutectic
Aluminum-Silicon Alloys.” 2009. Web. 18 Jan 2021.
Vancouver:
Bhattacharya S. Analysis of Second-Phase Particle Fracture in Hypereutectic
Aluminum-Silicon Alloys. [Internet] [Masters thesis]. National Library of Canada; 2009. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/175.
Council of Science Editors:
Bhattacharya S. Analysis of Second-Phase Particle Fracture in Hypereutectic
Aluminum-Silicon Alloys. [Masters Thesis]. National Library of Canada; 2009. Available from: http://scholar.uwindsor.ca/etd/175
7.
Xue, Guijun.
Tribological Studies of Eutectic Al-Si Alloys Used for
Automotive Engine Blocks Subjected to Sliding Wear Damage.
Degree: MA, Electrical and Computer
Engineering, 2009, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/149
► The microstructures and wear performances of linerless engine cylinder blocks made of two eutectic Al-Si alloys with different Si morphologies were characterized after the engine…
(more)
▼ The microstructures and wear performances of
linerless engine cylinder blocks made of two eutectic Al-Si alloys
with different Si morphologies were characterized after the engine
tests. Overall, both the Al-11 wt.% Si alloy and the Al-12.6 wt.%
Si alloy provided similar wear performance. Block-on-ring wear
tests were applied to the Al-11% Si alloy. The MW regime in air
consisted of two sub-regimes: MW-1 and MW-2. The argon atmosphere
produced a 10-fold reduction in wear rates and the formation of LMW
regime at loads less than 10 N. The metallic tribolayers formed in
the MW under argon atmosphere were uniform and stable, resulting
lower wear rates than those in air. The mechanism under argon
atmosphere was delimination. The SW occurring in argon was observed
at a relatively low load, compared to an air atmosphere. Wear was
also more sensitive to applied load in the argon
atmosphere.
Advisors/Committee Members: Alpas, Ahmet (Mechanical, Automotive and Materials Engineering).
Subjects/Keywords: Engineering; Automotive.
Record Details
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Xue, G. (2009). Tribological Studies of Eutectic Al-Si Alloys Used for
Automotive Engine Blocks Subjected to Sliding Wear Damage. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/149
Chicago Manual of Style (16th Edition):
Xue, Guijun. “Tribological Studies of Eutectic Al-Si Alloys Used for
Automotive Engine Blocks Subjected to Sliding Wear Damage.” 2009. Masters Thesis, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/149.
MLA Handbook (7th Edition):
Xue, Guijun. “Tribological Studies of Eutectic Al-Si Alloys Used for
Automotive Engine Blocks Subjected to Sliding Wear Damage.” 2009. Web. 18 Jan 2021.
Vancouver:
Xue G. Tribological Studies of Eutectic Al-Si Alloys Used for
Automotive Engine Blocks Subjected to Sliding Wear Damage. [Internet] [Masters thesis]. National Library of Canada; 2009. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/149.
Council of Science Editors:
Xue G. Tribological Studies of Eutectic Al-Si Alloys Used for
Automotive Engine Blocks Subjected to Sliding Wear Damage. [Masters Thesis]. National Library of Canada; 2009. Available from: http://scholar.uwindsor.ca/etd/149
8.
Taylor, Kirk.
Real-Time Closed-Loop Fuel Control For A Single-Cylinder
Direct Injection Diesel Engine.
Degree: MA, Mechanical, Automotive, and Materials
Engineering, 2010, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/213
► A stand-alone real-time fuel injection control system was developed and implemented on a single-cylinder direct injection diesel research engine with common rail fuel injection. The…
(more)
▼ A stand-alone real-time fuel injection
control system was developed and implemented on a single-cylinder
direct injection diesel research engine with common rail fuel
injection. The system provides an operator with complete control
over the fuelling strategy of the engine, including rate scheduling
capabilities for the fuel injection and shaping of the heat release
profile. The system can also run in a closed-loop mode where
calculated combustion parameters (crank angle of 50% heat release
and indicated mean effective pressure) can be maintained at user
target values. In-cylinder and intake pressure data was acquired
with piezo-type pressure transducers and phased with the engine
using a crank angle encoder. The pressure data was acquired at 0.5░
crank angle intervals. Fuel injection control was attained with the
development of digital TTL pulsetrains sent to a piezoelectric
injector power driver.
Advisors/Committee Members: LTjong, Jimi (MAME).
Subjects/Keywords: Engineering; Automotive.
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APA ·
Chicago ·
MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Taylor, K. (2010). Real-Time Closed-Loop Fuel Control For A Single-Cylinder
Direct Injection Diesel Engine. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/213
Chicago Manual of Style (16th Edition):
Taylor, Kirk. “Real-Time Closed-Loop Fuel Control For A Single-Cylinder
Direct Injection Diesel Engine.” 2010. Masters Thesis, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/213.
MLA Handbook (7th Edition):
Taylor, Kirk. “Real-Time Closed-Loop Fuel Control For A Single-Cylinder
Direct Injection Diesel Engine.” 2010. Web. 18 Jan 2021.
Vancouver:
Taylor K. Real-Time Closed-Loop Fuel Control For A Single-Cylinder
Direct Injection Diesel Engine. [Internet] [Masters thesis]. National Library of Canada; 2010. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/213.
Council of Science Editors:
Taylor K. Real-Time Closed-Loop Fuel Control For A Single-Cylinder
Direct Injection Diesel Engine. [Masters Thesis]. National Library of Canada; 2010. Available from: http://scholar.uwindsor.ca/etd/213
9.
An, Honggang.
Multi-objective Optimization of Tube Hydroforming Using
Hybrid Global and Local Search.
Degree: PhD, Mechanical, Automotive, and Materials
Engineering, 2010, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/454
► An investigation of non-linear multi-objective optimization is conducted in order to define a set of process parameters (i.e. load paths) for defect-free tube hydroforming. A…
(more)
▼ An investigation of non-linear
multi-objective optimization is conducted in order to define a set
of process parameters (i.e. load paths) for defect-free tube
hydroforming. A generalized forming severity indicator that
combines both the conventional forming limit diagram (FLD) and the
forming limit stress diagram (FLSD) was adopted to detect excessive
thinning, necking/splitting and wrinkling in the numerical
simulation of formed parts. In order to rapidly explore and capture
the Pareto frontier for multiple objectives, two optimization
strategies were developed: normal boundary intersection (NBI) and
multi-objective genetic algorithm (MOGA) based on the concept of
"dominated solutions". The NBI method produced a uniformly
distributed set of solutions. For the MOGA method, a stochastic
Kriging model was used as a surrogate model. Furthermore, the MOGA
constraint-handling technique was improved, Kriging model updating
was automated and a hybrid global-local search was implemented in
order to rapidly explore the Pareto frontier. Both piece-wise
linear and pulsating pressure paths were investigated for several
case studies, including straight tube, pre-bent tube and industrial
tube hydroforming. For straight tube hydroforming, the optimal load
path was obtained using the NBI method and it showed a smaller
corner radius compared to that predicted by the commercial program
LS-OPT4.0. Moreover, the hybrid method coupling global search
(MOGA) and local search (sequential quadratic programming: SQP) was
applied for straight tube hydroforming, and the results showed a
significant improvement in terms of the stress safety margin and
reduced local thinning. For a commercial refrigerator door handle,
the MOGA method was utilized to inversely analyze the loading path
and the calculated path correlated well with the production path.
For a hydroformed T-shaped tubular part, the amplitude and
frequency of the pulsating pressure were optimized with MOGA.
Thinning was reduced by 25% compared with experimental results. A
multi-stage (prebent) tube hydroforming simulation was performed
and it indicated that the reduction in formability due to bending
can be largely compensated by end feeding the tube during
hydroforming. The loading path optimized by MOGA showed that the
expansion into the corner of the hydroforming die increased by
16.7% compared to the maximum expansion obtained during
experimental trials.
Advisors/Committee Members: Green, Daniel (Mechanical, Automotive and Materials Engineering).
Subjects/Keywords: Engineering; Automotive.
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APA (6th Edition):
An, H. (2010). Multi-objective Optimization of Tube Hydroforming Using
Hybrid Global and Local Search. (Doctoral Dissertation). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/454
Chicago Manual of Style (16th Edition):
An, Honggang. “Multi-objective Optimization of Tube Hydroforming Using
Hybrid Global and Local Search.” 2010. Doctoral Dissertation, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/454.
MLA Handbook (7th Edition):
An, Honggang. “Multi-objective Optimization of Tube Hydroforming Using
Hybrid Global and Local Search.” 2010. Web. 18 Jan 2021.
Vancouver:
An H. Multi-objective Optimization of Tube Hydroforming Using
Hybrid Global and Local Search. [Internet] [Doctoral dissertation]. National Library of Canada; 2010. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/454.
Council of Science Editors:
An H. Multi-objective Optimization of Tube Hydroforming Using
Hybrid Global and Local Search. [Doctoral Dissertation]. National Library of Canada; 2010. Available from: http://scholar.uwindsor.ca/etd/454
10.
Doyle, Nicholas.
A Combined WiMAX/DSRC Approach to Vehicular
Networking.
Degree: MA, Electrical and Computer
Engineering, 2009, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/122
► From wireless Internet access at cafes to the expanding popularity of smart phones, ubiquitous Internet access has generated much public demand and research. Supplying broadband…
(more)
▼ From wireless Internet access at cafes to the
expanding popularity of smart phones, ubiquitous Internet access
has generated much public demand and research. Supplying broadband
Internet access for in-vehicle applications is a research area
still in its infancy. This thesis examines the strengths and
weaknesses of WiMAX and DSRC, two protocols that have been central
in much of the research surrounding in-vehicle network access. The
thesis then proposes a novel system structure that combines both of
these technologies and adds a network access layer in order to
provide a system structure that offers high bandwidth, bounded
latency and robust support for the high levels of mobility
experienced by vehicle-based users. This provides the network
support for applications such as streaming audio, video and Voice
over IP. The thesis also describes a demonstration system that
partly implements the proposed system
structure.
Advisors/Committee Members: Tepe, Kemal (Electrical and Computer Engineering).
Subjects/Keywords: Engineering; Automotive.
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APA (6th Edition):
Doyle, N. (2009). A Combined WiMAX/DSRC Approach to Vehicular
Networking. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/122
Chicago Manual of Style (16th Edition):
Doyle, Nicholas. “A Combined WiMAX/DSRC Approach to Vehicular
Networking.” 2009. Masters Thesis, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/122.
MLA Handbook (7th Edition):
Doyle, Nicholas. “A Combined WiMAX/DSRC Approach to Vehicular
Networking.” 2009. Web. 18 Jan 2021.
Vancouver:
Doyle N. A Combined WiMAX/DSRC Approach to Vehicular
Networking. [Internet] [Masters thesis]. National Library of Canada; 2009. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/122.
Council of Science Editors:
Doyle N. A Combined WiMAX/DSRC Approach to Vehicular
Networking. [Masters Thesis]. National Library of Canada; 2009. Available from: http://scholar.uwindsor.ca/etd/122
11.
Lu, Dongyun.
Neural Network Based Torque Control of Switched Reluctance
Motor for Hybrid Vehicle Propulsion.
Degree: MA, Electrical and Computer
Engineering, 2010, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/130
► Considering the extensive non-linearities in the switched reluctance motor (SRM) drive, variation in the DC bus voltage and specific requirements of the hybrid electric vehicles…
(more)
▼ Considering the extensive non-linearities in
the switched reluctance motor (SRM) drive, variation in the DC bus
voltage and specific requirements of the hybrid electric vehicles
(HEVs) traction application, a feed-forward back propagation neural
network (BPNN) based torque controller is proposed. By using
proposed controller, the torque ripple has been effectively reduced
at low speeds while the power efficiency has been optimized at high
speeds range. The problem of multi-valuedness related with the
neural network based direct inverse control has been targeted by
designing a bank of two-hidden-layer neural network controllers.
And the problem of torque oscillation due to the change of control
mode and step change of firing angle has been solved by using
dead-band filtering and nearly continuous changing of firing angle
and phase currents. Computed results are presented to demonstrate
the effectiveness of the proposed control
scheme.
Advisors/Committee Members: Kar, Narayan (Electrical and Computer Engineering).
Subjects/Keywords: Engineering; Automotive.
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Manager
APA (6th Edition):
Lu, D. (2010). Neural Network Based Torque Control of Switched Reluctance
Motor for Hybrid Vehicle Propulsion. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/130
Chicago Manual of Style (16th Edition):
Lu, Dongyun. “Neural Network Based Torque Control of Switched Reluctance
Motor for Hybrid Vehicle Propulsion.” 2010. Masters Thesis, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/130.
MLA Handbook (7th Edition):
Lu, Dongyun. “Neural Network Based Torque Control of Switched Reluctance
Motor for Hybrid Vehicle Propulsion.” 2010. Web. 18 Jan 2021.
Vancouver:
Lu D. Neural Network Based Torque Control of Switched Reluctance
Motor for Hybrid Vehicle Propulsion. [Internet] [Masters thesis]. National Library of Canada; 2010. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/130.
Council of Science Editors:
Lu D. Neural Network Based Torque Control of Switched Reluctance
Motor for Hybrid Vehicle Propulsion. [Masters Thesis]. National Library of Canada; 2010. Available from: http://scholar.uwindsor.ca/etd/130
12.
Fukuda, Kohei.
NUMERICAL SIMULATION OF FUEL SPRAYS IN DIESEL
ENGINES.
Degree: MA, Mechanical, Automotive, and Materials
Engineering, 2012, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/186
► Engine simulations with diesel fuel spray at ultra-high injection pressures ranging from 100 to 300 MPa were conducted in a vertical valve engine geometry using…
(more)
▼ Engine simulations with diesel fuel spray at
ultra-high injection pressures ranging from 100 to 300 MPa were
conducted in a vertical valve engine geometry using ANSYS FLUENT
13.0. The in-cylinder flow was calculated by RANS models and DES
and validated with the experimental data. The fuel spray
characteristics such as Sauter mean diameter, spray cone angle,
spray tip penetration and fuel/air mixture were studied under the
presence of in-cylinder flow. The ultra-high injection pressures
assist in the breakup of droplets into smaller size, accelerating
atomization, dispersing the spray in a wide cone angle and mixing
air/fuel effectively. However, the rate of change in droplet size
was reduced by increasing the injection pressure. Also, high air
density in the cylinder did not induce the breakup of droplets. The
spray simulations failed for the RNG k-epsilon and standard k-omega
models and the issue was found to be the sensitivity to of the
calculations to grid size and type in the particle tracking
methodology.
Advisors/Committee Members: Barron, Ron (Mechanical, Automotive, and Materials Engineering).
Subjects/Keywords: Automotive engineering.
Record Details
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Manager
APA (6th Edition):
Fukuda, K. (2012). NUMERICAL SIMULATION OF FUEL SPRAYS IN DIESEL
ENGINES. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/186
Chicago Manual of Style (16th Edition):
Fukuda, Kohei. “NUMERICAL SIMULATION OF FUEL SPRAYS IN DIESEL
ENGINES.” 2012. Masters Thesis, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/186.
MLA Handbook (7th Edition):
Fukuda, Kohei. “NUMERICAL SIMULATION OF FUEL SPRAYS IN DIESEL
ENGINES.” 2012. Web. 18 Jan 2021.
Vancouver:
Fukuda K. NUMERICAL SIMULATION OF FUEL SPRAYS IN DIESEL
ENGINES. [Internet] [Masters thesis]. National Library of Canada; 2012. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/186.
Council of Science Editors:
Fukuda K. NUMERICAL SIMULATION OF FUEL SPRAYS IN DIESEL
ENGINES. [Masters Thesis]. National Library of Canada; 2012. Available from: http://scholar.uwindsor.ca/etd/186
13.
Liburdi, Andrew.
Development of a Scale Vehicle Dynamics Test Bed.
Degree: MA, Mechanical, Automotive, and Materials
Engineering, 2010, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/195
► Research in the area of vehicle dynamics often requires that virtual models be correlated with test data or control systems be implemented within hardware. However,…
(more)
▼ Research in the area of vehicle dynamics
often requires that virtual models be correlated with test data or
control systems be implemented within hardware. However, the
prohibitive cost associated with a proper testing program has
relegated the majority of research in these areas to virtual
simulation. The purpose of this research was to develop a low cost
vehicle dynamics test bed, which could be used to investigate the
full operational range of vehicle handling. A scaled approach,
analogous to wind tunnel testing, was used in order to make
predictions about a system based on observations obtained from a
scale model. The following test bed is unique since it is
untethered from the acquisition system allowing for a wider range
of test manoeuvres to be used. Results obtained from the test bed
verified the usefulness of a scaled approach with good correlation
being achieved between linear handling models and test
data.
Advisors/Committee Members: Minaker, Bruce (Mechanical, Automotive and Materials Engineering).
Subjects/Keywords: Engineering; Automotive.
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Manager
APA (6th Edition):
Liburdi, A. (2010). Development of a Scale Vehicle Dynamics Test Bed. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/195
Chicago Manual of Style (16th Edition):
Liburdi, Andrew. “Development of a Scale Vehicle Dynamics Test Bed.” 2010. Masters Thesis, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/195.
MLA Handbook (7th Edition):
Liburdi, Andrew. “Development of a Scale Vehicle Dynamics Test Bed.” 2010. Web. 18 Jan 2021.
Vancouver:
Liburdi A. Development of a Scale Vehicle Dynamics Test Bed. [Internet] [Masters thesis]. National Library of Canada; 2010. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/195.
Council of Science Editors:
Liburdi A. Development of a Scale Vehicle Dynamics Test Bed. [Masters Thesis]. National Library of Canada; 2010. Available from: http://scholar.uwindsor.ca/etd/195
14.
Johnston, Michael.
Development and evaluation of vehicle suspension tuning
metrics.
Degree: MA, Mechanical, Automotive, and Materials
Engineering, 2010, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/193
► By proposing and exploring a set of complimentary and cohesive metrics, meant to describe both the grip available from the tires and the comfort of…
(more)
▼ By proposing and exploring a set of
complimentary and cohesive metrics, meant to describe both the grip
available from the tires and the comfort of the occupants, this
research seeks to modernize suspension tuning efforts. The product
of this research is a set of three metrics which will allow
suspension engineers to quantify the performance of a suspension in
terms of its ability to achieve good grip with the road surface,
and to provide the occupants with a comfortable
ride.
Advisors/Committee Members: Johrendt, Jennifer (MAME).
Subjects/Keywords: Engineering; Automotive.
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Johnston, M. (2010). Development and evaluation of vehicle suspension tuning
metrics. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/193
Chicago Manual of Style (16th Edition):
Johnston, Michael. “Development and evaluation of vehicle suspension tuning
metrics.” 2010. Masters Thesis, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/193.
MLA Handbook (7th Edition):
Johnston, Michael. “Development and evaluation of vehicle suspension tuning
metrics.” 2010. Web. 18 Jan 2021.
Vancouver:
Johnston M. Development and evaluation of vehicle suspension tuning
metrics. [Internet] [Masters thesis]. National Library of Canada; 2010. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/193.
Council of Science Editors:
Johnston M. Development and evaluation of vehicle suspension tuning
metrics. [Masters Thesis]. National Library of Canada; 2010. Available from: http://scholar.uwindsor.ca/etd/193
15.
Le Dinh, Anh.
Numerical and Experimental Studies on Transport Phenomena of
Proton Exchange Membrance Fuel Cells.
Degree: PhD, Mechanical, Automotive, and Materials
Engineering, 2010, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/461
► This dissertation presents a novel numerical approach to investigate the water management that is a critical issue in high-performance PEM fuel cell design and optimization.…
(more)
▼ This dissertation presents a novel numerical
approach to investigate the water management that is a critical
issue in high-performance PEM fuel cell design and optimization. By
incorporating the phase change and VOF method to investigate the
liquid water transport, a general, three-dimensional, unsteady,
multi-phase numerical model has been developed to simulate the
fluid flow, heat and mass transfer, species transport,
electrochemical reaction, and current density distribution and
numerically visualize a real-time operation of a PEMFC. Several
topics regarding to the single fuel cell and stack modeling, and
experimental visualization are explored: First, the development of
a general model of proton exchange membrane fuel cell (PEMFC) is
presented. The incorporation of VOF method and fuel cell
mathematical model is to investigate liquid water transport in
PEMFCs by performing the formation and motion of liquid water in
terms of volume-of-fluid. The general model was implemented into
the commercial CFD software FLUENT v6.3, with its user-defined
functions (UDFs) written in C language in our own. Second,
application of the general model concretized in specific cases
including a single PEMFC with interdigitated channel, a single
PEMFC with serpentine channel and a PEMFC stack is discussed. In
the interdigitated PEMFC case, the numerical results show several
effects of flooding on the fuel cell performance: the presence of
liquid water blocks the gas transport in the fuel cell, resulting
in a degradation of local current density. In addition, the
possibility of this numerical model approach demonstrates that the
formation, motion and removal of liquid water in the channels and
porous media can be numerically visualized. In the stack case, by
adding liquid water droplets in different single cells in the stack
to simulate the flooding phenomenon, the numerical results explain
how liquid drops influence physical and transport characteristics
of each single cell in the stack. Finally, an experimental
visualization on liquid droplet motion in a PEMFC channel is
described. The experimental data quantitatively and qualitatively
show a good agreement with the numerical results obtained from the
VOF model. Again, the success in the model comparison proves the
confidence and applicability of the numerical model proposed in
this dissertation.
Advisors/Committee Members: Zhou, Biao (Mechanical, Automotive and Materials Engineering).
Subjects/Keywords: Engineering; Automotive.
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APA ·
Chicago ·
MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Le Dinh, A. (2010). Numerical and Experimental Studies on Transport Phenomena of
Proton Exchange Membrance Fuel Cells. (Doctoral Dissertation). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/461
Chicago Manual of Style (16th Edition):
Le Dinh, Anh. “Numerical and Experimental Studies on Transport Phenomena of
Proton Exchange Membrance Fuel Cells.” 2010. Doctoral Dissertation, National Library of Canada. Accessed January 18, 2021.
http://scholar.uwindsor.ca/etd/461.
MLA Handbook (7th Edition):
Le Dinh, Anh. “Numerical and Experimental Studies on Transport Phenomena of
Proton Exchange Membrance Fuel Cells.” 2010. Web. 18 Jan 2021.
Vancouver:
Le Dinh A. Numerical and Experimental Studies on Transport Phenomena of
Proton Exchange Membrance Fuel Cells. [Internet] [Doctoral dissertation]. National Library of Canada; 2010. [cited 2021 Jan 18].
Available from: http://scholar.uwindsor.ca/etd/461.
Council of Science Editors:
Le Dinh A. Numerical and Experimental Studies on Transport Phenomena of
Proton Exchange Membrance Fuel Cells. [Doctoral Dissertation]. National Library of Canada; 2010. Available from: http://scholar.uwindsor.ca/etd/461
16.
Varnhagen, Scott Julian.
Development of Vehicle Dynamics Control for Wheel-Motored Vehicles.
Degree: 2015, University of California, Davis
URL: http://pqdtopen.proquest.com/#viewpdf?dispub=3685305
► This dissertation describes a methodology for the vehicle dynamics control of a wheel motored vehicle. All theory is developed assuming that the driver has…
(more)
▼ This dissertation describes a methodology for the vehicle dynamics control of a wheel motored vehicle. All theory is developed assuming that the driver has control of the front wheel steering angle, and that wheel torque is solely generated by independent wheel motors at each corner of the vehicle. Theoretical work is presented for the general case with four independent wheel motors, but can be easily reduced to a situation with only two wheel motors. Indeed, all theory developed in this work is evaluated experimentally on a production automobile converted to be driven by two independent rear wheel motors. As opposed to directly allocating wheel torques, the proposed philosophy operates in the slip-ratio domain. Doing so helps to prevent excessive tire saturation and allows the system to adapt to changing road surfaces. To that end, this dissertation first proposes a method of estimating slip-ratio utilizing only sensors currently available on modern automobiles. A slip-ratio controller is then developed approximating the disturbance observer structure. This allows the controller to be robust to changing road surface and as a byproduct provide an accurate estimate of longitudinal tire force. Combining the estimated longitudinal tire force with the estimated slip-ratio it is then possible to ascertain some degree of tire saturation. With this in mind, an optimal control allocation problem is proposed which attempts to achieve the desired vehicle dynamics while at the same time minimizing tire saturation. It is shown experimentally that the proposed control methodology effectively achieves desired vehicle dynamics. In addition, the system adapts its behavior to changing road surfaces resulting in optimal performance regardless of operating conditions.
Subjects/Keywords: Engineering; Automotive
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APA (6th Edition):
Varnhagen, S. J. (2015). Development of Vehicle Dynamics Control for Wheel-Motored Vehicles. (Thesis). University of California, Davis. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=3685305
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Varnhagen, Scott Julian. “Development of Vehicle Dynamics Control for Wheel-Motored Vehicles.” 2015. Thesis, University of California, Davis. Accessed January 18, 2021.
http://pqdtopen.proquest.com/#viewpdf?dispub=3685305.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Varnhagen, Scott Julian. “Development of Vehicle Dynamics Control for Wheel-Motored Vehicles.” 2015. Web. 18 Jan 2021.
Vancouver:
Varnhagen SJ. Development of Vehicle Dynamics Control for Wheel-Motored Vehicles. [Internet] [Thesis]. University of California, Davis; 2015. [cited 2021 Jan 18].
Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3685305.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Varnhagen SJ. Development of Vehicle Dynamics Control for Wheel-Motored Vehicles. [Thesis]. University of California, Davis; 2015. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3685305
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Embry-Riddle Aeronautical University
17.
Armstrong, Stephen Gregory.
Nonholonomic Feedback Control Among Moving Obstacles.
Degree: MSin Engineering Physics, Physical Sciences, 2011, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/17
► A feedback controller is developed for navigating a nonholonomic vehicle in an area with multiple stationary and possibly moving obstacles. Among other applications the…
(more)
▼ A feedback controller is developed for navigating a nonholonomic vehicle in an area with multiple stationary and possibly moving obstacles. Among other applications the developed algorithms can be used for automatic parking of a passenger car in a parking lot with complex configuration or a ground robot in cluttered environment. Several approaches are explored which combine nonholonomic systems control based on sliding modes and potential field methods.
Subjects/Keywords: Automotive Engineering
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Armstrong, S. G. (2011). Nonholonomic Feedback Control Among Moving Obstacles. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/17
Chicago Manual of Style (16th Edition):
Armstrong, Stephen Gregory. “Nonholonomic Feedback Control Among Moving Obstacles.” 2011. Masters Thesis, Embry-Riddle Aeronautical University. Accessed January 18, 2021.
https://commons.erau.edu/edt/17.
MLA Handbook (7th Edition):
Armstrong, Stephen Gregory. “Nonholonomic Feedback Control Among Moving Obstacles.” 2011. Web. 18 Jan 2021.
Vancouver:
Armstrong SG. Nonholonomic Feedback Control Among Moving Obstacles. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2011. [cited 2021 Jan 18].
Available from: https://commons.erau.edu/edt/17.
Council of Science Editors:
Armstrong SG. Nonholonomic Feedback Control Among Moving Obstacles. [Masters Thesis]. Embry-Riddle Aeronautical University; 2011. Available from: https://commons.erau.edu/edt/17
Embry-Riddle Aeronautical University
18.
Sayem, Ahmed Saber Soliman.
Vision-Aided Navigation for Autonomous Vehicles Using Tracked Feature Points.
Degree: MSin Unmanned and Autonomous Systems Engineering, Aerospace Engineering, 2016, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/240
► This thesis discusses the evaluation, implementation, and testing of several navigation algorithms and feature extraction algorithms using an inertial measurement unit (IMU) and an…
(more)
▼ This thesis discusses the evaluation, implementation, and testing of several navigation algorithms and feature extraction algorithms using an inertial measurement unit (IMU) and an image capture device (camera) mounted on a ground robot and a quadrotor UAV. The vision-aided navigation algorithms are implemented on data-collected from sensors on an unmanned ground vehicle and a quadrotor, and the results are validated by comparison with GPS data. The thesis investigates sensor fusion techniques for integrating measured IMU data with information extracted from image processing algorithms in order to provide accurate vehicle state estimation. This image-based information takes the forms of features, such as corners, that are tracked over multiple image frames. An extended Kalman filter (EKF) in implemented to fuse vision and IMU data. The main goal of the work is to provide navigation of mobile robots in GPS-denied environments such as indoor environments, cluttered urban environments, or space environments such as asteroids, other planets or the moon. The experimental results show that combining pose information extracted from IMU readings along with pose information extracted from a vision-based algorithm managed to solve the drift problem that comes from using IMU alone and the scale problem that comes from using a monocular vision-based algorithm alone.
Subjects/Keywords: Automotive Engineering
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APA ·
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MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sayem, A. S. S. (2016). Vision-Aided Navigation for Autonomous Vehicles Using Tracked Feature Points. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/240
Chicago Manual of Style (16th Edition):
Sayem, Ahmed Saber Soliman. “Vision-Aided Navigation for Autonomous Vehicles Using Tracked Feature Points.” 2016. Masters Thesis, Embry-Riddle Aeronautical University. Accessed January 18, 2021.
https://commons.erau.edu/edt/240.
MLA Handbook (7th Edition):
Sayem, Ahmed Saber Soliman. “Vision-Aided Navigation for Autonomous Vehicles Using Tracked Feature Points.” 2016. Web. 18 Jan 2021.
Vancouver:
Sayem ASS. Vision-Aided Navigation for Autonomous Vehicles Using Tracked Feature Points. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2016. [cited 2021 Jan 18].
Available from: https://commons.erau.edu/edt/240.
Council of Science Editors:
Sayem ASS. Vision-Aided Navigation for Autonomous Vehicles Using Tracked Feature Points. [Masters Thesis]. Embry-Riddle Aeronautical University; 2016. Available from: https://commons.erau.edu/edt/240
Embry-Riddle Aeronautical University
19.
Bonderczuk, Derek Simon.
Execution of a Hybrid Vehicle Controls Development Effort Utilizing Model-Based Design, Hardware-in-the-loop Testing, Agile Scrum Methods and Requirements Engineering.
Degree: MSin Mechanical Engineering, Mechanical Engineering, 2014, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/165
► Modern hybrid vehicles require sophisticated supervisory control systems in order to realize competitive efficiency gains. Processes such as model-based design, HIL simulation and Agile…
(more)
▼ Modern hybrid vehicles require sophisticated supervisory control systems in order to realize competitive efficiency gains. Processes such as model-based design, HIL simulation and Agile Scrum methods can allow for quicker and less costly development of a complex product. The design of a supervisory control system for a prototype PHEV vehicle was executed with the intent of developing a mule vehicle into a 99% production ready vehicle. The control system design process was carried through from requirements definition to operating parameter optimization of utilizing model-based design, HIL simulation and the Scrum model. A prototype vehicle that has a fully functioning hybrid system with innovative propulsion control methods has been produced by this process.
Subjects/Keywords: Automotive Engineering
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APA (6th Edition):
Bonderczuk, D. S. (2014). Execution of a Hybrid Vehicle Controls Development Effort Utilizing Model-Based Design, Hardware-in-the-loop Testing, Agile Scrum Methods and Requirements Engineering. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/165
Chicago Manual of Style (16th Edition):
Bonderczuk, Derek Simon. “Execution of a Hybrid Vehicle Controls Development Effort Utilizing Model-Based Design, Hardware-in-the-loop Testing, Agile Scrum Methods and Requirements Engineering.” 2014. Masters Thesis, Embry-Riddle Aeronautical University. Accessed January 18, 2021.
https://commons.erau.edu/edt/165.
MLA Handbook (7th Edition):
Bonderczuk, Derek Simon. “Execution of a Hybrid Vehicle Controls Development Effort Utilizing Model-Based Design, Hardware-in-the-loop Testing, Agile Scrum Methods and Requirements Engineering.” 2014. Web. 18 Jan 2021.
Vancouver:
Bonderczuk DS. Execution of a Hybrid Vehicle Controls Development Effort Utilizing Model-Based Design, Hardware-in-the-loop Testing, Agile Scrum Methods and Requirements Engineering. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2014. [cited 2021 Jan 18].
Available from: https://commons.erau.edu/edt/165.
Council of Science Editors:
Bonderczuk DS. Execution of a Hybrid Vehicle Controls Development Effort Utilizing Model-Based Design, Hardware-in-the-loop Testing, Agile Scrum Methods and Requirements Engineering. [Masters Thesis]. Embry-Riddle Aeronautical University; 2014. Available from: https://commons.erau.edu/edt/165
Embry-Riddle Aeronautical University
20.
Sharma, Anuj Kalidas.
Sensing, Actuation, and Embedded Control for a Custom SCR Nitrogen Oxides Emissions Reduction System.
Degree: MSin Electrical & Computer Engineering, Graduate Studies, 2016, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/247
► Diesel engines are the main power source for medium and heavy duty on road vehicles. With the rising standards for mileage of vehicles set…
(more)
▼ Diesel engines are the main power source for medium and heavy duty on road vehicles. With the rising standards for mileage of vehicles set by the Corporate Average Fuel Economy and the Environmental Protection Agency, diesel engines should soon be considered in lieu of gas engines. Despite advantages of diesel engines, diesel emissions include harmful gasses like carbon monoxide, nitrogen oxides and particulate matter. Selective Catalytic Reduction (SCR) systems have long been used to reduce diesel emissions from medium to heavy-duty diesel engines. Primary focus of this research effort is the implementation and improvement of a SCR system on light diesel engines. To improve efficiency we implemented a control law to limit the emissions within bounds ensuring low emissions for varied drive cycles. We developed a controller network using user datagram protocol to collect engine data using Arduino. The controller network establishes communication link between sensor data collection and a raspberry pi controller to enable full control over the test station.
Subjects/Keywords: Automotive Engineering
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APA (6th Edition):
Sharma, A. K. (2016). Sensing, Actuation, and Embedded Control for a Custom SCR Nitrogen Oxides Emissions Reduction System. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/247
Chicago Manual of Style (16th Edition):
Sharma, Anuj Kalidas. “Sensing, Actuation, and Embedded Control for a Custom SCR Nitrogen Oxides Emissions Reduction System.” 2016. Masters Thesis, Embry-Riddle Aeronautical University. Accessed January 18, 2021.
https://commons.erau.edu/edt/247.
MLA Handbook (7th Edition):
Sharma, Anuj Kalidas. “Sensing, Actuation, and Embedded Control for a Custom SCR Nitrogen Oxides Emissions Reduction System.” 2016. Web. 18 Jan 2021.
Vancouver:
Sharma AK. Sensing, Actuation, and Embedded Control for a Custom SCR Nitrogen Oxides Emissions Reduction System. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2016. [cited 2021 Jan 18].
Available from: https://commons.erau.edu/edt/247.
Council of Science Editors:
Sharma AK. Sensing, Actuation, and Embedded Control for a Custom SCR Nitrogen Oxides Emissions Reduction System. [Masters Thesis]. Embry-Riddle Aeronautical University; 2016. Available from: https://commons.erau.edu/edt/247
Embry-Riddle Aeronautical University
21.
Nshuti, Cindy.
Design of Flight Control Laws for a Novel Stratospheric Dual-Aircraft Platform.
Degree: MSin Unmanned and Autonomous Systems Engineering, Graduate Studies, 2017, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/371
► Dual-aircraft platform (DAP) is a novel concept that features two glider-like unmanned aerial systems (UAS) tethered via a thin adjustable cable allowing them to…
(more)
▼ Dual-aircraft platform (DAP) is a novel concept that features two glider-like unmanned aerial systems (UAS) tethered via a thin adjustable cable allowing them to sail back-and-forth, without propulsion, using vertical wind shear. DAP offers the potential of a low-cost atmospheric satellite. This thesis presents the results of an initiative to demonstrate this novel flight concept through modeling, simulation, and flight testing at Embry-Riddle Aeronautical University (ERAU). A realistic simulation environment, described herein, was developed to support the development and testing of flight control systems. This environment includes nonlinear aerodynamic models for the aircraft, a multi-element cable dynamics model, propeller-motor thrust model, control surface actuator models, and permits time-varying wind profiles. This simulator offers both pilot-in-the-loop control and autonomous sailing flight control, and X-Plane interface to provide visualization cues. An intensive flight test program, described herein, was conducted to support the validation of the DAP concept. MAXA Pro 4m gliders were assembled, instrumented, and flight tested in an effort to physically demonstrate the sailing mode of flight. The flight test program described here focuses on the capability to sail with one aircraft (i.e., fly without propulsion) while "towing" (i.e., pulling) a moving truck as an intermediate step towards the more complex scenario of sailing with two connected aircraft. Two vital elements of the flight software are implemented and analyzed herein. The accuracy of wind estimation techniques is evaluated using flight testing. The robustness of an L1 adaptive controller is evaluated within the flight simulation environment by comparing its performance with a conventional controller.
Subjects/Keywords: Automotive Engineering
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APA (6th Edition):
Nshuti, C. (2017). Design of Flight Control Laws for a Novel Stratospheric Dual-Aircraft Platform. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/371
Chicago Manual of Style (16th Edition):
Nshuti, Cindy. “Design of Flight Control Laws for a Novel Stratospheric Dual-Aircraft Platform.” 2017. Masters Thesis, Embry-Riddle Aeronautical University. Accessed January 18, 2021.
https://commons.erau.edu/edt/371.
MLA Handbook (7th Edition):
Nshuti, Cindy. “Design of Flight Control Laws for a Novel Stratospheric Dual-Aircraft Platform.” 2017. Web. 18 Jan 2021.
Vancouver:
Nshuti C. Design of Flight Control Laws for a Novel Stratospheric Dual-Aircraft Platform. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2017. [cited 2021 Jan 18].
Available from: https://commons.erau.edu/edt/371.
Council of Science Editors:
Nshuti C. Design of Flight Control Laws for a Novel Stratospheric Dual-Aircraft Platform. [Masters Thesis]. Embry-Riddle Aeronautical University; 2017. Available from: https://commons.erau.edu/edt/371
Embry-Riddle Aeronautical University
22.
Buchholz, Jonathan Mark.
Multirotor UAS Sense and Avoid with Sensor Fusion.
Degree: MSin Unmanned and Autonomous Systems Engineering, Electrical, Computer, Software, and Systems Engineering, 2019, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/496
► In this thesis, the key concepts of independent autonomous Unmanned Aircraft Systems (UAS) are explored including obstacle detection, dynamic obstacle state estimation, and avoidance…
(more)
▼ In this thesis, the key concepts of independent autonomous Unmanned Aircraft Systems (UAS) are explored including obstacle detection, dynamic obstacle state estimation, and avoidance strategy. This area is explored in pursuit of determining the viability of UAS Sense and Avoid (SAA) in static and dynamic operational environments. This exploration is driven by dynamic simulation and post-processing of real-world data. A sensor suite comprised of a 3D Light Detection and Ranging (LIDAR) sensor, visual camera, and 9 Degree of Freedom (DOF) Inertial Measurement Unit (IMU) was found to be beneficial to autonomous UAS SAA in urban environments. Promising results are based on to the broadening of available information about a dynamic or fixed obstacle via pixel-level LIDAR point cloud fusion and the combination of inertial measurements and LIDAR point clouds for localization purposes. However, there is still a significant amount of development required to optimize a data fusion method and SAA guidance method.
Subjects/Keywords: Automotive Engineering
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APA (6th Edition):
Buchholz, J. M. (2019). Multirotor UAS Sense and Avoid with Sensor Fusion. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/496
Chicago Manual of Style (16th Edition):
Buchholz, Jonathan Mark. “Multirotor UAS Sense and Avoid with Sensor Fusion.” 2019. Masters Thesis, Embry-Riddle Aeronautical University. Accessed January 18, 2021.
https://commons.erau.edu/edt/496.
MLA Handbook (7th Edition):
Buchholz, Jonathan Mark. “Multirotor UAS Sense and Avoid with Sensor Fusion.” 2019. Web. 18 Jan 2021.
Vancouver:
Buchholz JM. Multirotor UAS Sense and Avoid with Sensor Fusion. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2019. [cited 2021 Jan 18].
Available from: https://commons.erau.edu/edt/496.
Council of Science Editors:
Buchholz JM. Multirotor UAS Sense and Avoid with Sensor Fusion. [Masters Thesis]. Embry-Riddle Aeronautical University; 2019. Available from: https://commons.erau.edu/edt/496
Clemson University
23.
Zhang, Xueyu.
Supervisory Control Optimization for a Series Hybrid Electric Vehicle with Consideration of Battery Thermal Management and Aging.
Degree: PhD, Automotive Engineering, 2016, Clemson University
URL: https://tigerprints.clemson.edu/all_dissertations/2293
► This dissertation integrates battery thermal management and aging into the supervisory control optimization for a heavy-duty series hybrid electric vehicle (HEV). The framework for…
(more)
▼ This dissertation integrates battery thermal management and aging into the supervisory control optimization for a heavy-duty series hybrid electric vehicle (HEV). The framework for multi-objective optimization relies on novel implementation of the Dynamic Programing algorithm, and predictive models of critical phenomena. Electrochemistry based battery aging model is integrated into the framework to assesses the battery aging rate by considering instantaneous lithium ion (Li+) surface concentration rather than average concentration. This creates a large state-action space. Therefore, the computational effort required to solve a Deterministic or Stochastic Dynamic Programming becomes prohibitively intense, and a neuro-dynamic programming approach is proposed to remove the ‘curse of dimensionality’ in classical dynamic programming.
First, unified simulation framework is developed for in-depth studies of series HEV system. The integration of a refrigerant system model enables prediction of energy use for cooling the battery pack. Side reaction, electrolyte decomposition, is considered as the main aging mechanism of LiFePO4/Graphite battery, and an electrochemical model is integrated to predict side reaction rate and the resulting fading of capacity and power. An approximate analytical solution is used to solve the partial difference equations (PDEs) for Li+ diffusion. Comparing with finite difference method, it largely reduces the number of states with only a slight penalty on prediction accuracy. This improves computational efficiency, and enables inclusion of the electrochemistry based aging model in the power management optimization framework.
Next, a stochastic dynamic programming (SDP) approach is applied to the optimization of supervisory control. Auxiliary cooling power is included in addition to vehicle propulsion. Two objectives, fuel economy and battery life, are optimized by weighted sum method. To reduce the computation load, a simplified battery aging model coupled with equivalent circuit model is used in SDP optimization; Li+ diffusion dynamics are disregarded, and surface concentration is represented by the average concentration. This reduces the system state number to four with two control inputs. A real-time implementable strategy is generated and embedded into the supervisory controller. The result shows that SDP strategy can improve fuel economy and battery life simultaneously, comparing with Thermostatic SOC strategy. Further, the tradeoff between fuel consumption and active Li+ loss is studied under different battery temperature.
Finally, the accuracy of battery aging model for optimization is improved by adding Li+ diffusion dynamics. This increases the number of states and brings challenges to classical dynamic programming algorithms. Hence, a neuro-dynamic programming (NDP) approach is proposed for the problem with large state-action space. It combines the idea of functional approximation and temporal difference learning with dynamic programming; in that case the…
Advisors/Committee Members: Dr. Zoran Filipi, Committee Chair, Dr. Simona Onori, Dr. Pierluigi Pisu, Dr. Robert Prucka.
Subjects/Keywords: Automotive Engineering
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APA (6th Edition):
Zhang, X. (2016). Supervisory Control Optimization for a Series Hybrid Electric Vehicle with Consideration of Battery Thermal Management and Aging. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/2293
Chicago Manual of Style (16th Edition):
Zhang, Xueyu. “Supervisory Control Optimization for a Series Hybrid Electric Vehicle with Consideration of Battery Thermal Management and Aging.” 2016. Doctoral Dissertation, Clemson University. Accessed January 18, 2021.
https://tigerprints.clemson.edu/all_dissertations/2293.
MLA Handbook (7th Edition):
Zhang, Xueyu. “Supervisory Control Optimization for a Series Hybrid Electric Vehicle with Consideration of Battery Thermal Management and Aging.” 2016. Web. 18 Jan 2021.
Vancouver:
Zhang X. Supervisory Control Optimization for a Series Hybrid Electric Vehicle with Consideration of Battery Thermal Management and Aging. [Internet] [Doctoral dissertation]. Clemson University; 2016. [cited 2021 Jan 18].
Available from: https://tigerprints.clemson.edu/all_dissertations/2293.
Council of Science Editors:
Zhang X. Supervisory Control Optimization for a Series Hybrid Electric Vehicle with Consideration of Battery Thermal Management and Aging. [Doctoral Dissertation]. Clemson University; 2016. Available from: https://tigerprints.clemson.edu/all_dissertations/2293
Clemson University
24.
Farahani, Saeed.
Polymer Injection Forming: A New Age Technology for Manufacturing Polymer-Metal Hybrids.
Degree: PhD, Automotive Engineering, 2018, Clemson University
URL: https://tigerprints.clemson.edu/all_dissertations/2482
► Due to global competition, manufacturing firms in high-wage countries must target innovation in production processes and technologies that allow the mass manufacturing of customized…
(more)
▼ Due to global competition, manufacturing firms in high-wage countries must target innovation in production processes and technologies that allow the mass manufacturing of customized products through highly efficient processes. Motivated by the concept of the integrative production systems, hybrid process of polymer injection molding and sheet metal forming, known as polymer injection forming (PIF), has been introduced to manufacture sheet metal-polymer components using a single tooling, machinery, and operating system. During this process, the sheet metal blank inside the injection mold is deformed by means of tool movement and/or by pressure of the polymer melt. As the melt cools, the injected polymer is permanently bonded to the deformed sheet metal depending upon the existence/use of any bonding agents.
Despite the wide application potential of the PIF process in the manufacturing of sheet metal-polymer hybrid structures, its scientific knowledge is still premature, and several challenges have prevented the implementation of this technology. From the experimental point of view, the lack of special tool design for PIF process and limitations of injection molding machines have confined previous work to stretch forming of sheet metal with no draw-in allowance. In addition, previous studies have mostly focused on the effect of injection parameters on deformation of sheet metal, thereby overlooking the specification of injected moiety as part of the final hybrid component. In theoretical studies, PIF process has been mostly compared with the hydroforming process and investigation was limited to only understanding the effect of rheological characterization of the polymer melt on pressure distribution and sheet metal deformation. Hence, the effect of coupled filling/forming condition of this process on melt flow pattern and modeling of PIF process, based on the particular behavior of polymer melt flow, was missed in previous studies. Finally, no applied solution has been so far suggested to mitigate the practical issues ahead of implementing PIF technology in actual industrial applications.
It is these issues that this dissertation addresses. Hence, the first part of this study is to conduct a holistic experimental investigation using a specialized setup and a new design concept of PIF mold for the purpose of applying the blank holder force (BHF) independently from the preset clamping force on injection machine. Moreover, a set of sensors and a data acquisition system are integrated to capture online in-mold process parameters as well as transient variables on the injection machine.
Using the proposed mold design, the interaction of BHF and injection rate is studied experimentally and compared with the results of a novel analytical-numerical simulation. Besides the successful conduction of this modeling approach, the superposition of draw-in value calculated from this analysis with pressure profiles captured by the sensor revealed that the drawing of sheet metal into the cavity happens mostly…
Advisors/Committee Members: Dr. Srikanth Pilla, Committee Chair, Dr. Craig Clemons, Dr. Gang Li, Dr. Hongseok Choi.
Subjects/Keywords: Automotive Engineering
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APA (6th Edition):
Farahani, S. (2018). Polymer Injection Forming: A New Age Technology for Manufacturing Polymer-Metal Hybrids. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/2482
Chicago Manual of Style (16th Edition):
Farahani, Saeed. “Polymer Injection Forming: A New Age Technology for Manufacturing Polymer-Metal Hybrids.” 2018. Doctoral Dissertation, Clemson University. Accessed January 18, 2021.
https://tigerprints.clemson.edu/all_dissertations/2482.
MLA Handbook (7th Edition):
Farahani, Saeed. “Polymer Injection Forming: A New Age Technology for Manufacturing Polymer-Metal Hybrids.” 2018. Web. 18 Jan 2021.
Vancouver:
Farahani S. Polymer Injection Forming: A New Age Technology for Manufacturing Polymer-Metal Hybrids. [Internet] [Doctoral dissertation]. Clemson University; 2018. [cited 2021 Jan 18].
Available from: https://tigerprints.clemson.edu/all_dissertations/2482.
Council of Science Editors:
Farahani S. Polymer Injection Forming: A New Age Technology for Manufacturing Polymer-Metal Hybrids. [Doctoral Dissertation]. Clemson University; 2018. Available from: https://tigerprints.clemson.edu/all_dissertations/2482
Clemson University
25.
Shen, Qin.
Impact-Acoustic Evaluation Method of Internal Crack in Rubber Composite Structure.
Degree: PhD, Automotive Engineering, 2013, Clemson University
URL: https://tigerprints.clemson.edu/all_dissertations/1542
► The main objective of this work is to investigate the impact acoustic method as a means of nondestructive testing (NDT) for internal cracks in…
(more)
▼ The main objective of this work is to investigate the impact acoustic method as a means of nondestructive testing (NDT) for internal cracks in a rubber composite structure, such as that found in a tire. As demonstrated in this dissertation, this approach is an effective and economical alternative to the current NDT methods for tires casing integrity inspection. There are two separate aspects of the impact acoustic signals considered in this work: the impact force signal and the resultant acoustic signal. First, a contact dynamics model is developed based on the Hertz’s impact theory and modified for rubber composite materials. The model generates prediction of major impact dynamics quantities, which are theoretically proven to be sensitive to the existence of internal structural cracks. For the purpose of applying the impact acoustic method for tire casing integrity inspection, models are developed for simplified tire structures, which are a cubic shape comprised of rubber compound material without reinforcements. The prepared cubic rubber samples are designed to roughly approximate the profile of the sectional tire casing and the cracks embedded at the belt edge in the shoulder area. The rationality of the simplification is explained both theoretically and experimentally.
Based on comprehensive theoretical analysis of the impact acoustic signals, several direct and indirect experimental features are identified that are equivalent to the theoretical dynamic quantities, thus correlated to the presence of internal crack. The experimental discriminators can be extracted from either impact force signal or acoustic time- and frequency-domain signal. They are verified as promising indicators of internal crack in both simplified cubic rubber structures and complicated tire casings. Integration of the experimentally extracted discriminators helps to mitigate the deficiencies and noise caused by relying heavily on a single discriminator, while providing an integrated index identifying the damage conditions with good accuracy and robustness.
Advisors/Committee Members: Dr. Mohammed A. Omar, Dr. Thomas R. Kurfess, Dr. Laine Mears, Dr. Timothy B. Rhyne.
Subjects/Keywords: Automotive Engineering
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APA (6th Edition):
Shen, Q. (2013). Impact-Acoustic Evaluation Method of Internal Crack in Rubber Composite Structure. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/1542
Chicago Manual of Style (16th Edition):
Shen, Qin. “Impact-Acoustic Evaluation Method of Internal Crack in Rubber Composite Structure.” 2013. Doctoral Dissertation, Clemson University. Accessed January 18, 2021.
https://tigerprints.clemson.edu/all_dissertations/1542.
MLA Handbook (7th Edition):
Shen, Qin. “Impact-Acoustic Evaluation Method of Internal Crack in Rubber Composite Structure.” 2013. Web. 18 Jan 2021.
Vancouver:
Shen Q. Impact-Acoustic Evaluation Method of Internal Crack in Rubber Composite Structure. [Internet] [Doctoral dissertation]. Clemson University; 2013. [cited 2021 Jan 18].
Available from: https://tigerprints.clemson.edu/all_dissertations/1542.
Council of Science Editors:
Shen Q. Impact-Acoustic Evaluation Method of Internal Crack in Rubber Composite Structure. [Doctoral Dissertation]. Clemson University; 2013. Available from: https://tigerprints.clemson.edu/all_dissertations/1542
Clemson University
26.
Antani, Kavit Ravindra.
A Study of the Effects of Manufacturing Complexity on Product Quality in Mixed-Model Automotive Assembly.
Degree: PhD, Automotive Engineering, 2014, Clemson University
URL: https://tigerprints.clemson.edu/all_dissertations/1540
► The objective of this research is to test the hypothesis that manufacturing complexity can reliably predict product quality in mixed-model automotive assembly. Originally, assembly…
(more)
▼ The objective of this research is to test the hypothesis that manufacturing complexity can reliably predict product quality in mixed-model
automotive assembly.
Originally, assembly lines were developed for cost efficient mass-production of standardized products. Today, in order to respond to diversified customer needs, companies have to allow for an individualization of their products, leading to the development of the Flexible Manufacturing Systems (FMS). Assembly line balancing problems (ALBP) consist of assigning the total workload for manufacturing a product to stations of an assembly line as typically applied in the
automotive industry. Precedence relationships among tasks are required to conduct partly or fully automated Assembly Line Balancing. Efforts associated with manual precedence graph generation at a major
automotive manufacturer have highlighted a potential relationship between manufacturing complexity (driven by product design, assembly process, and human factors) and product quality, a potential link that is usually ignored during Assembly Line Balancing and one that has received very little research focus so far. The methodology used in this research will potentially help develop a new set of constraints for an optimization model that can be used to minimize manufacturing complexity and maximize product quality, while satisfying the precedence constraints.
This research aims to validate the hypothesis that the contribution of design variables, process variables, and human-factors can be represented by a complexity metric that can be used to predict their contribution on product quality. The research will also identify how classes of defect prevention methods can be incorporated in the predictive model to prevent defects in applications that exhibit high level of complexity. The manufacturing complexity model is applied to mechanical fastening processes which are accountable for the top 28% of defects found in
automotive assembly, according to statistical analysis of historical data collected over the course of one year of vehicle production at a major
automotive assembly plant. The predictive model is validated using mechanical fastening processes at an independent
automotive assembly plant.
This complexity-based predictive model will be the first of its kind that will take into account design, process, and human factors to define complexity and validate it using a real-world
automotive manufacturing process. The model will have the potential to be utilized by design and process engineers to evaluate the effect of manufacturing complexity on product quality before implementing the process in a real-world assembly environment.
Advisors/Committee Members: Dr. Laine Mears, Dr. Thomas Kurfess, Dr. Mary Beth Kurz, Dr. Maria Mayorga.
Subjects/Keywords: Automotive Engineering
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APA (6th Edition):
Antani, K. R. (2014). A Study of the Effects of Manufacturing Complexity on Product Quality in Mixed-Model Automotive Assembly. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/1540
Chicago Manual of Style (16th Edition):
Antani, Kavit Ravindra. “A Study of the Effects of Manufacturing Complexity on Product Quality in Mixed-Model Automotive Assembly.” 2014. Doctoral Dissertation, Clemson University. Accessed January 18, 2021.
https://tigerprints.clemson.edu/all_dissertations/1540.
MLA Handbook (7th Edition):
Antani, Kavit Ravindra. “A Study of the Effects of Manufacturing Complexity on Product Quality in Mixed-Model Automotive Assembly.” 2014. Web. 18 Jan 2021.
Vancouver:
Antani KR. A Study of the Effects of Manufacturing Complexity on Product Quality in Mixed-Model Automotive Assembly. [Internet] [Doctoral dissertation]. Clemson University; 2014. [cited 2021 Jan 18].
Available from: https://tigerprints.clemson.edu/all_dissertations/1540.
Council of Science Editors:
Antani KR. A Study of the Effects of Manufacturing Complexity on Product Quality in Mixed-Model Automotive Assembly. [Doctoral Dissertation]. Clemson University; 2014. Available from: https://tigerprints.clemson.edu/all_dissertations/1540
Clemson University
27.
McConomy, Shayne Kelly.
Measurement of Older and Younger Drivers' Selected Seat Position within their Personal Vehicles to Influence Recommended Practices for Meeting Safety Needs of Drivers.
Degree: PhD, Automotive Engineering, 2015, Clemson University
URL: https://tigerprints.clemson.edu/all_dissertations/1803
► The objective of this research was to measure and understand the preferred seat position and posture of older drivers and younger drivers within their…
(more)
▼ The objective of this research was to measure and understand the preferred seat position and posture of older drivers and younger drivers within their personal vehicles to influence recommended practices for meeting the safety needs of all drivers.Currently, the United States is experiencing an ageing population, whereby in 2020 nearly 40 million people over the age of 65 will be licensed drivers. In addition, crash reports show that older drivers are over represented in vehicle fatality statistics, once adjusted for vehicle miles traveled. The increased fatality rate of older drivers has been attributed to a combination of increased fragility of older drivers and their selected seat position. Educational programs, such as CarFit©, have been established to teach older drivers about safe seating guidelines in an effort to reduce the over representation of older drivers in crash statistics.
The research for this dissertation was conducted to collect data from older drivers over the age of 60 and younger drivers between the ages of 30 to 39. Data were collected within the driver’s personal vehicle to obtain a natural and accurate driver selected seat position. Each driver was measured twice. The first set measures were obtained right after the driver’s arrival to the study site in the seat position the driver had selected. The second set of measures were taken after each driver was educated on CarFit© safe seating guidelines.
The results of this dissertation show that the addition of an age term to the SAE J4004 recommended practice model for predicting driver selected seat position of any driver is a statistically significant contribution to the model thereby, improving the fit of the model and the accuracy of the predicted seat position model. In addition, age was shown as predictor variable for the CarFit© line of sight above the steering wheel measure, whereby older drivers were 5 times more likely than younger drivers to meet the CarFit© guideline of a 76 mm (3 in) line of sight above the steering wheel. Last, stature was shown as a predictor variable for the likelihood of meeting the CarFit© criteria, where tall-statured individuals were less likely to meet the backset, top of head to ceiling, and top of leg to bottom of steering wheel measurements and more likely to meet the line of sight above the steering wheel measurement.
Advisors/Committee Members: Paul J. Th. Venhovens, PhD, Co-Committee Chair, Johnell O. Brooks, PhD, Co-Committee Chair, John D. DesJardins PhD, Kevin Kopera, MD, MPH, Patrick J. Rosopa PhD.
Subjects/Keywords: Automotive Engineering
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APA (6th Edition):
McConomy, S. K. (2015). Measurement of Older and Younger Drivers' Selected Seat Position within their Personal Vehicles to Influence Recommended Practices for Meeting Safety Needs of Drivers. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/1803
Chicago Manual of Style (16th Edition):
McConomy, Shayne Kelly. “Measurement of Older and Younger Drivers' Selected Seat Position within their Personal Vehicles to Influence Recommended Practices for Meeting Safety Needs of Drivers.” 2015. Doctoral Dissertation, Clemson University. Accessed January 18, 2021.
https://tigerprints.clemson.edu/all_dissertations/1803.
MLA Handbook (7th Edition):
McConomy, Shayne Kelly. “Measurement of Older and Younger Drivers' Selected Seat Position within their Personal Vehicles to Influence Recommended Practices for Meeting Safety Needs of Drivers.” 2015. Web. 18 Jan 2021.
Vancouver:
McConomy SK. Measurement of Older and Younger Drivers' Selected Seat Position within their Personal Vehicles to Influence Recommended Practices for Meeting Safety Needs of Drivers. [Internet] [Doctoral dissertation]. Clemson University; 2015. [cited 2021 Jan 18].
Available from: https://tigerprints.clemson.edu/all_dissertations/1803.
Council of Science Editors:
McConomy SK. Measurement of Older and Younger Drivers' Selected Seat Position within their Personal Vehicles to Influence Recommended Practices for Meeting Safety Needs of Drivers. [Doctoral Dissertation]. Clemson University; 2015. Available from: https://tigerprints.clemson.edu/all_dissertations/1803
Clemson University
28.
Yu, Xiaoyan.
Design, Synthesis and Sustainable Applications of Animal Protein-Based Thermoset Polymers and Covalent Organic Frameworks.
Degree: PhD, Automotive Engineering, 2017, Clemson University
URL: https://tigerprints.clemson.edu/all_dissertations/2088
► Extensive research has been undertaken in recent times on finding suitable, alternative, non-feed and non-fertilizer applications for proteinaceous materials in the animal rendering industry.…
(more)
▼ Extensive research has been undertaken in recent times on finding suitable, alternative, non-feed and non-fertilizer applications for proteinaceous materials in the animal rendering industry. In this regard, use of such proteins to derive plastics, especially thermoplastics and derived composites, has emerged as a potentially acceptable choice. However, the widespread use of such proteins for aforementioned applications is limited by their poor mechanical properties, high moisture absorption and their inherent odor. In this study, we have engineered, for the first time, high-strength, toughened thermoset polymers from proteinaceous materials obtained from the rendering industry so that they can be employed in high performance applications, such as in the
automotive sector. However, the lack of compatibility between protein molecules and organic resins could not be ignored. Hence, in this study, we have also solved this problem by utilizing waterborne polyurethane as resins to react with protein molecules and form covalent-bonded interconnected hybrid polymers. To overcome the lack of compatibility, water soluble epoxy resin was also studied to crosslink with animal protein molecules.
Recycling of epoxy resin-based composites has widely gained attention among researchers and environmentalists as the major waste processing method for such composites is landfilling, which requires large areas of waste land. While alternative recycling pathways such as mechanical, pyrolysis and fluidized bed have been achieved, all such pathways have either been undertaken at a small scale, are highly energy-intensive, or are detrimental to the environment through other means. Here, we present a new self-healing, repairable, and recyclable epoxy matrix with extendable usage time as well as increased life cycles. Moreover, urethane chain was introduced into the epoxy matrix as it helped achieve tunable, varying mechanical properties, with the copolymer possessing properties of both polyurethane and epoxy.
To understand the art of molecule architecture, an easy method to prepare graphitic material from synthesized polymer was described in this study. Polyazomethine was synthesized, activated at high temperature, referred to as nitrogen-doped carbon (NC) materials, and then used to purify water. TGA results directed the choice of annealing temperature. Raman spectra confirmed that the material was indeed graphite-similar, showing G and D bands at 1584 cm-1 and 1337 cm-1 respectively. Adsorption experiments and BET surface area measurements revealed that temperature of 750°C or higher was efficient for annealing the material.
Advisors/Committee Members: Srikanth Pilla, Committee Chair, Fadi Abu-farha, Craig Clemons, Mark Hoffman, Annel Greene.
Subjects/Keywords: Automotive Engineering
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APA ·
Chicago ·
MLA ·
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APA (6th Edition):
Yu, X. (2017). Design, Synthesis and Sustainable Applications of Animal Protein-Based Thermoset Polymers and Covalent Organic Frameworks. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/2088
Chicago Manual of Style (16th Edition):
Yu, Xiaoyan. “Design, Synthesis and Sustainable Applications of Animal Protein-Based Thermoset Polymers and Covalent Organic Frameworks.” 2017. Doctoral Dissertation, Clemson University. Accessed January 18, 2021.
https://tigerprints.clemson.edu/all_dissertations/2088.
MLA Handbook (7th Edition):
Yu, Xiaoyan. “Design, Synthesis and Sustainable Applications of Animal Protein-Based Thermoset Polymers and Covalent Organic Frameworks.” 2017. Web. 18 Jan 2021.
Vancouver:
Yu X. Design, Synthesis and Sustainable Applications of Animal Protein-Based Thermoset Polymers and Covalent Organic Frameworks. [Internet] [Doctoral dissertation]. Clemson University; 2017. [cited 2021 Jan 18].
Available from: https://tigerprints.clemson.edu/all_dissertations/2088.
Council of Science Editors:
Yu X. Design, Synthesis and Sustainable Applications of Animal Protein-Based Thermoset Polymers and Covalent Organic Frameworks. [Doctoral Dissertation]. Clemson University; 2017. Available from: https://tigerprints.clemson.edu/all_dissertations/2088
University of Waterloo
29.
Ellsworth, Patrick.
Increasing Efficiency of Hybrid Electric Vehicles Using Advanced Controls.
Degree: 2016, University of Waterloo
URL: http://hdl.handle.net/10012/10865
► The drive to improve and optimize hybrid vehicle performance is increasing with the growing market of hybrids. This research is conducted on a student developed…
(more)
▼ The drive to improve and optimize hybrid vehicle performance is increasing with the growing market of hybrids. This research is conducted on a student developed parallel split hybrid architecture. The architecture features an engine, transmission and two electric motors; one pre-transmission and one post-transmission. In order to complete this project, UWAFT has selected an 850 cc two-cylinder turbocharged engine that will operate on 85 % ethanol (E85) in a plug-in hybrid parallel split powertrain configuration. As most production hybrids have four-cylinder engines, this powertrain is seen as further electrification of hybrid electric vehicles. Different tests are conducted to demonstrate how the engine would operate in the vehicle. The results show that by running E85, the engine is able to produce up to 58% of the specified power rating with its first tune and provided validation for the capability of producing power in parallel operation. Additionally the model more accurately represents the speed matching capabilities of the engine.
The control strategy operates the powertrain components in a series, parallel, and all electric power flow. Control strategies for these three power flows are compared through optimization of efficiencies within the powertrain. The resulting control strategy optimizations used by the team have increased the vehicle’s charge depleting range by 27.7 %., while decreasing energy consumption by 13.8 %.Additionally it produced a 30.5 % increase in miles per gallon gasoline equivalent in charge sustaining mode, increasing total range by 30.2%.Inspection of cell internal resistance (Rint) derived by the hybrid pulse power characterization (HPPC) tests indicates that Rint is a function of relative capacity (state of charge, or SOC), thus some SOC ranges are more efficient than others. Therefore energy losses can be minimized by placing charge sustaining operation in a more efficient SOC range. This creates three operational stages; the initial charge depleting stage to an efficient SOC, a charge sustaining stage until a recharge station is within reach, and a final charge depleting stage until arrival. When coupled with a known drive distance, this three segment Internal Resistance Based (IRB) control strategy increases the extended range electric vehicle (EREV) net battery efficiency from 96.8 to 97.3 % with an associated 14 % decrease in energy losses across the urban domestic drive schedule. Indirect benefits include an increased active SOC range, decreased urban emissions, and decreased waste heat generation, meeting the goals of Advanced Vehicle Technology Competitions.
Subjects/Keywords: Hybrids; Automotive
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APA (6th Edition):
Ellsworth, P. (2016). Increasing Efficiency of Hybrid Electric Vehicles Using Advanced Controls. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/10865
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ellsworth, Patrick. “Increasing Efficiency of Hybrid Electric Vehicles Using Advanced Controls.” 2016. Thesis, University of Waterloo. Accessed January 18, 2021.
http://hdl.handle.net/10012/10865.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ellsworth, Patrick. “Increasing Efficiency of Hybrid Electric Vehicles Using Advanced Controls.” 2016. Web. 18 Jan 2021.
Vancouver:
Ellsworth P. Increasing Efficiency of Hybrid Electric Vehicles Using Advanced Controls. [Internet] [Thesis]. University of Waterloo; 2016. [cited 2021 Jan 18].
Available from: http://hdl.handle.net/10012/10865.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ellsworth P. Increasing Efficiency of Hybrid Electric Vehicles Using Advanced Controls. [Thesis]. University of Waterloo; 2016. Available from: http://hdl.handle.net/10012/10865
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
The Ohio State University
30.
Zhang, Quansheng.
Modeling, Energy Optimization and Control of Vapor
Compression Refrigeration Systems for Automotive
Applications.
Degree: PhD, Mechanical Engineering, 2014, The Ohio State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1406121484
► In recent years, the increasing fuel consumption in the transportation sector has forcedthe automotive industry to improve their fleet-average fuel economy without sacrificingthe vehicle performance.…
(more)
▼ In recent years, the increasing fuel consumption in
the transportation sector has forcedthe
automotive industry to
improve their fleet-average fuel economy without sacrificingthe
vehicle performance. The primary path towards achieving fuel
economyimprovements consists of improving the energy conversion
efficiency of powertraincomponents and mitigating various forms of
losses. Ancillary loads, such as the AirConditioning (A/C) system,
fans and blowers or the alternator, are considered asa significant
source of energy dissipation on the vehicle, but represent also an
opportunityto improve vehicle fuel economy through the
implementation of advanceddesign and control solutions. To this
extent, this dissertation focuses on the fundamentaland applied
research that leads to the development of control algorithms forthe
energy optimization of the Air Conditioning system for a light-duty
vehicle.Two types of mathematical models for characterizing the
dynamics of vapor compressionrefrigeration systems were developed
and validated. A high-fidelity, controlorientedmodel was initially
developed through an original formulation of the MovingBoundary
Method using the Reynolds Transport Theorem with moving control
surface,providing a generic template for characterizing mass and
energy transfer inpresence of a phase changing fluid. Then, an
energy-based model was derived fromfirst principles to capture the
relevant refrigerant pressure dynamics in the heat exchangersand
the compressor power consumption affecting the fuel economy
withlimited complexity.In addition, this dissertation addresses two
different control problems in the fieldof A/C systems. First, a
low-level controller was designed for tracking performanceand
disturbance rejection, then a high-level supervisory controller was
developed forsystem-level energy optimization and performance
tracking.A local H-infinity controller was designed to track
prescribed trajectories of twooutput variables, namely the pressure
difference dp between the condenser and theevaporator, and the
superheat temperature SH at the evaporator.The problem of
system-level A/C optimization was then introduced by
definingappropriate objective functions to characterize the fuel
energy consumption, coolingperformance and components durability.
This led to the formulation of a constrainedmulti-objective optimal
control problem, which was approached numerically to analyzethe
behavior of the system and identify the potential to reduce the
energyconsumption while maintaining acceptable cooling
performance.The results of this study were used as a starting point
for the design of a forwardlookingenergy-based strategy. The
Pontryagin’s Minimum Principle for continuoustimeoptimal control
problems, the Hybrid Minimum Principle (HMP) theory andthe
Embedding Method for switching hybrid systems were considered in
this study todesign an optimal control policy for the A/C
compressor clutch. The results obtainedby applying these method
were evaluated in simulation, using the energy-based
A/Cmodel.
Advisors/Committee Members: Canova, Marcello (Advisor).
Subjects/Keywords: Automotive Engineering
Record Details
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Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zhang, Q. (2014). Modeling, Energy Optimization and Control of Vapor
Compression Refrigeration Systems for Automotive
Applications. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1406121484
Chicago Manual of Style (16th Edition):
Zhang, Quansheng. “Modeling, Energy Optimization and Control of Vapor
Compression Refrigeration Systems for Automotive
Applications.” 2014. Doctoral Dissertation, The Ohio State University. Accessed January 18, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1406121484.
MLA Handbook (7th Edition):
Zhang, Quansheng. “Modeling, Energy Optimization and Control of Vapor
Compression Refrigeration Systems for Automotive
Applications.” 2014. Web. 18 Jan 2021.
Vancouver:
Zhang Q. Modeling, Energy Optimization and Control of Vapor
Compression Refrigeration Systems for Automotive
Applications. [Internet] [Doctoral dissertation]. The Ohio State University; 2014. [cited 2021 Jan 18].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1406121484.
Council of Science Editors:
Zhang Q. Modeling, Energy Optimization and Control of Vapor
Compression Refrigeration Systems for Automotive
Applications. [Doctoral Dissertation]. The Ohio State University; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1406121484
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Open Access Theses and Dissertations