subject:(Vehicle dynamics)

Virginia Tech

1. Tamaddoni, Seyed Hossein. Optimal Vehicle Stability Control with Driver Input and Bounded Uncertainties.

Degree: PhD, Mechanical Engineering, 2011, Virginia Tech

► For decades vehicle control has been extensively studied to investigate and improve vehicle stability and performance. Such controllers are designed to improve driving safety while… (more)

▼ For decades vehicle control has been extensively studied to investigate and improve vehicle stability and performance. Such controllers are designed to improve driving safety while the driver is still in control of the vehicle. It is known that human drivers are capable to learn and adapt to their built-in vehicle controller in order to improve their control actions based on their past driving experiences with the same vehicle controller. Although the learning curve varies for different human drivers, it results in a more constructive cooperation between the human driver and the computer-based vehicle controller, leading to globally optimal vehicle stability. The main intent of this research is to develop a novel cooperative interaction model between the human driver and vehicle controller in order to obtain globally optimal vehicle steering and lateral control. Considering the vehicle driver-controller interactions as a common two-player game problem where both players attempt to improve their payoffs, i.e., minimize their objective functions, the Game Theory approach is applied to obtain the optimal driver's steering inputs and controller's corrective yaw moment. Extending this interaction model to include more realistic scenarios, the model is discretized and a road preview model is added to account for the driver's preview-time characteristic. Also, a robust interaction model is developed to stabilize the vehicle performance while taking bounded uncertainty effects in driver's steering behavior into consideration using the Integral Sliding Mode control methodology. For evaluation purposes, a nonlinear vehicle dynamics model is developed that captures nonlinear tire characteristics and includes driver steering controllability and vehicle speed control systems such as cruise control, differential braking, and anti-lock braking systems. A graphical user interface (GUI) is developed in MATLAB to ease the use of the vehicle model and hopefully encourage its widespread application in the future. Simulation results indicate that the proposed cooperative interaction model, which is the end-product of human driver's and vehicle controller's mutual understanding of each other's objective and performance quality, results in more optimal and stable vehicle performance in lateral and yaw motions compared to the existing LQR controllers that tend to independently optimize the driver and vehicle controller inputs. Advisors/Committee Members: Taheri, Saied (committeechair), Hajj, Muhammad R. (committee member), Southward, Steve C. (committee member), Nayfeh, Ali H. (committee member), Inman, Daniel J. (committee member), Ahmadian, Mehdi (committeecochair).

Subjects/Keywords: Vehicle Dynamics; Vehicle Stability; Vehicle Control

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APA (6^th Edition):

Tamaddoni, S. H. (2011). Optimal Vehicle Stability Control with Driver Input and Bounded Uncertainties. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/77238

Chicago Manual of Style (16^th Edition):

Tamaddoni, Seyed Hossein. “Optimal Vehicle Stability Control with Driver Input and Bounded Uncertainties.” 2011. Doctoral Dissertation, Virginia Tech. Accessed March 05, 2021. http://hdl.handle.net/10919/77238.

MLA Handbook (7^th Edition):

Tamaddoni, Seyed Hossein. “Optimal Vehicle Stability Control with Driver Input and Bounded Uncertainties.” 2011. Web. 05 Mar 2021.

Vancouver:

Tamaddoni SH. Optimal Vehicle Stability Control with Driver Input and Bounded Uncertainties. [Internet] [Doctoral dissertation]. Virginia Tech; 2011. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10919/77238.

Council of Science Editors:

Tamaddoni SH. Optimal Vehicle Stability Control with Driver Input and Bounded Uncertainties. [Doctoral Dissertation]. Virginia Tech; 2011. Available from: http://hdl.handle.net/10919/77238

University of Oxford

2. Ewin, Nathan. Traction control for electric vehicles with independently driven wheels.

Degree: PhD, 2016, University of Oxford

URL: https://ora.ox.ac.uk/objects/uuid:dfc99786-fe17-4225-bd91-3ab83416981f ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.730302

► The necessity to reduce climate related emissions is driving the electrication of transportation. As well as reducing emissions Electric Vehicles (EV) have the capability of… (more)

▼ The necessity to reduce climate related emissions is driving the electrication of transportation. As well as reducing emissions Electric Vehicles (EV) have the capability of improving traction and vehicle stability. Unlike a conventional vehicle that uses a single Internal Combustion Engine (ICE) to drive one or both axles, an EV can have an electric machine driving each of the wheels independently. This opens up the possibility of using the electric machines as an actuator for traction control. In conventional vehicles the hydraulic brakes together with the ICE are used to actuate traction control. The advantages of electric machines over hydraulic brakes are precise measurable torque, higher bandwidth, bidirectional torque and kinetic energy recovery. A review of the literature shows that a wide range of control methods is used for traction control of EVs. These are mainly focused on control of an individual wheel, with only a minority being advanced to the experimental stage of verication. Integrated approaches to the control of multiple wheels are generally lacking, as well as verication that tests the vehicle's directional stability. A large body of the literature uses the slip ratio of the wheel as the key control variable. A signicant challenge for slip-based traction control is the detection of vehicle velocity together with the calculation of slip around zero vehicle velocity. A traction control method that does not depend upon vehicle velocity detection or slip ratio is Maximum Transmissible Torque Estimation (MTTE), after Yin et al. (2009). In this thesis an MTTE based method is developed for a full size electric vehicle with independently driven rear wheels. The original MTTE method for a single wheel is analysed using a simple quarter vehicle model. The simulation results of Yin et al. (2009) are in general reproducible although a lack of data in the original research prevents a quantitative comparison. A modication is proposed to the rate compensation term. Simulation results show that the proposed modication ensures that the torque demand is delivered to the wheel under normal driving conditions, this includes negative torque demand which is not possible for MTTE, Yin et al. (2009). Enabling negative torque demands means that the proposed traction control is compatible with higher level stability control such as torque vectoring. The performance of the controller is veried through a combination of simulation and vehicle based experiments. Compared with experiments, simulations are fast and inexpensive and can provide greater insight as all of the variables are observable. To simulate the controller a high delity vehicle model is required. To achieve this it is necessary to initially validate the model against experimental data. Simulation verication using a validated vehicle model is lacking in the literature. A full vehicle model is developed for this thesis using Dymola, a multi-body system software tool. The model includes the full suspension geometry of the vehicle. Pacejka's "Magic Formula" is…

Subjects/Keywords: 629.22; Vehicle Dynamics

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APA (6^th Edition):

Ewin, N. (2016). Traction control for electric vehicles with independently driven wheels. (Doctoral Dissertation). University of Oxford. Retrieved from https://ora.ox.ac.uk/objects/uuid:dfc99786-fe17-4225-bd91-3ab83416981f ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.730302

Chicago Manual of Style (16^th Edition):

Ewin, Nathan. “Traction control for electric vehicles with independently driven wheels.” 2016. Doctoral Dissertation, University of Oxford. Accessed March 05, 2021. https://ora.ox.ac.uk/objects/uuid:dfc99786-fe17-4225-bd91-3ab83416981f ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.730302.

MLA Handbook (7^th Edition):

Ewin, Nathan. “Traction control for electric vehicles with independently driven wheels.” 2016. Web. 05 Mar 2021.

Vancouver:

Ewin N. Traction control for electric vehicles with independently driven wheels. [Internet] [Doctoral dissertation]. University of Oxford; 2016. [cited 2021 Mar 05]. Available from: https://ora.ox.ac.uk/objects/uuid:dfc99786-fe17-4225-bd91-3ab83416981f ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.730302.

Council of Science Editors:

Ewin N. Traction control for electric vehicles with independently driven wheels. [Doctoral Dissertation]. University of Oxford; 2016. Available from: https://ora.ox.ac.uk/objects/uuid:dfc99786-fe17-4225-bd91-3ab83416981f ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.730302

Delft University of Technology

3. Fokker, A.D. (author). Investigating the drag sensitivity parameters and lateral dynamic response of a road vehicle in cross-wind flow.

Degree: 2015, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:bb871e9d-2596-49a4-9bf2-cbed4c6a9446

► Recent trends in the automobile industry focus towards enhancing the operating efficiency of the road vehicle. One can achieve this by a combination of increasing… (more)

▼ Recent trends in the automobile industry focus towards enhancing the operating efficiency of the road vehicle. One can achieve this by a combination of increasing the powertrain efficiency, reducing the weight and increasing the aerodynamic performance. The scope of this study is on the latter, i. e. enhancing the aerodynamic performance. Most cars are optimized for minimum drag in idealized conditions, driving engineers to design for the test rather than for to optimize for actual flow encountered in real world conditions. These realistic conditions include (un)steady cross-wind flows encountered by the vehicle, rather than a perfectly aligned flow as is the case in an idealized situation. Different researchers studied the effect of these real world conditions on the performance of a vehicle. Many of these studies focussed upon the vehicle stability rather than the potential to reduce aerodynamic drag. This is because typical drag reducing means (such as radiused edges) tend to have a detrimental effect on the cross-wind stability and comfort of the vehicle. \ The introduction of the fully electric Tesla Model S created new opportunities within this conception. This 2500 {kg vehicle has an 800 {kg battery underneath the car, which results in a different - relatively flexible - position of the center of gravity, total mass and corresponding mass moments of inertia. As a result it is questioned if this difference in vehicle specifications allow for drag reducing shape modifications on a vehicle which is then still stable during cross-wind flows. After a careful trade-off it was chosen to use the recently launched open-source CFD software suite SU2 in order to find an answer to the following research objective: What design modifications reduce the drag coefficient of a simplified vehicle model which experiences a cross-wind flow, and how does this affect the lateral dynamic performance? An interesting follow-up question on this would be to identify which design variables are (most) sensitive to drag increments in realistic crosswind flows. This document describes the process of solving the research objective within the framework of a Master of Science thesis. A thorough vehicle dynamics study was performed in order to assess the most influential parameters which affect the lateral deviation of a vehicle. Within this study it was found that the cross-wind induced lateral deviation with a longitudinal velocity of 30m/s and a cross-wind flow of 3.15m/s or 6 degrees is roughly similar to the situation where the steering wheel angle is set to 1 degree. This implies that the lateral deviation during cross-wind flows is not much of an issue during steady cross-wind flows of up to 6 degrees. Experiments were designed for three different cross-wind flows; 0 degrees, 3 degrees and 6 degrees cross-wind flow for both conventional and electric vehicles. Here the effects of the following shape modifications have been studied: arrowing the front of the vehicle, tapering the aft of the vehicle, applying a side-window tumblehome… Advisors/Committee Members: Van Zuijlen, A.H. (mentor), Veldhuis, L.L.M. (mentor).

Subjects/Keywords: vehicle aerodynamics drag reduction vehicle dynamics

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APA (6^th Edition):

Fokker, A. D. (. (2015). Investigating the drag sensitivity parameters and lateral dynamic response of a road vehicle in cross-wind flow. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:bb871e9d-2596-49a4-9bf2-cbed4c6a9446

Chicago Manual of Style (16^th Edition):

Fokker, A D (author). “Investigating the drag sensitivity parameters and lateral dynamic response of a road vehicle in cross-wind flow.” 2015. Masters Thesis, Delft University of Technology. Accessed March 05, 2021. http://resolver.tudelft.nl/uuid:bb871e9d-2596-49a4-9bf2-cbed4c6a9446.

MLA Handbook (7^th Edition):

Fokker, A D (author). “Investigating the drag sensitivity parameters and lateral dynamic response of a road vehicle in cross-wind flow.” 2015. Web. 05 Mar 2021.

Vancouver:

Fokker AD(. Investigating the drag sensitivity parameters and lateral dynamic response of a road vehicle in cross-wind flow. [Internet] [Masters thesis]. Delft University of Technology; 2015. [cited 2021 Mar 05]. Available from: http://resolver.tudelft.nl/uuid:bb871e9d-2596-49a4-9bf2-cbed4c6a9446.

Council of Science Editors:

Fokker AD(. Investigating the drag sensitivity parameters and lateral dynamic response of a road vehicle in cross-wind flow. [Masters Thesis]. Delft University of Technology; 2015. Available from: http://resolver.tudelft.nl/uuid:bb871e9d-2596-49a4-9bf2-cbed4c6a9446

Oregon State University

4. Takaro, Trevor M. F. Shocks and Awe : Damping Selection in Racecars to Maximize Grip.

Degree: MS, Mechanical Engineering, 2015, Oregon State University

URL: http://hdl.handle.net/1957/56322

► This thesis covers the use of a quarter car model to select damping rates for a Formula Student (FS) car, focusing on minimizing vertical tire… (more)

Subjects/Keywords: Vehicle Dynamics; Damping (Mechanics)

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APA (6^th Edition):

Takaro, T. M. F. (2015). Shocks and Awe : Damping Selection in Racecars to Maximize Grip. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/56322

Chicago Manual of Style (16^th Edition):

Takaro, Trevor M F. “Shocks and Awe : Damping Selection in Racecars to Maximize Grip.” 2015. Masters Thesis, Oregon State University. Accessed March 05, 2021. http://hdl.handle.net/1957/56322.

MLA Handbook (7^th Edition):

Takaro, Trevor M F. “Shocks and Awe : Damping Selection in Racecars to Maximize Grip.” 2015. Web. 05 Mar 2021.

Vancouver:

Takaro TMF. Shocks and Awe : Damping Selection in Racecars to Maximize Grip. [Internet] [Masters thesis]. Oregon State University; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1957/56322.

Council of Science Editors:

Takaro TMF. Shocks and Awe : Damping Selection in Racecars to Maximize Grip. [Masters Thesis]. Oregon State University; 2015. Available from: http://hdl.handle.net/1957/56322

5. Chenane, Chabane. Analyse et reconstruction de la dynamique des véhicules motorisés (VDRM) et détection de situations limites de roulis : Analysis and reconstruction of powered two wheeled (PTW) vehicles dynamics and limit lean angle detection.

Degree: Docteur es, Automatique, 2014, Evry-Val d'Essonne

URL: http://www.theses.fr/2014EVRY0037

►

Le monde des Véhicules à Deux Roues Motorisés (VDRM) a changé considérablement,en matière de qualité et de performances. Ces véhicules ont pris une place importante… (more)

▼

Le monde des Véhicules à Deux Roues Motorisés (VDRM) a changé considérablement,en matière de qualité et de performances. Ces véhicules ont pris une place importante dans notre vie quotidienne, que ce soit pour les déplacements ou les loisirs, ce qui a contribué à l’augmentation et à la diversité du parc. Néanmoins, la sécurité des usagers est devenue une des préoccupations des institutions routières et des organismes de recherche, vu le nombre croissant des accidents et la vulnérabilité à laquelle sont confrontés. Nos travaux de recherche s’inscrivent dans la thématique d’étude (modélisation et observation) et d’analyse de la dynamique limite des VDRM. L’objectif étant la conception des outils nécessaires à l’établissement de systèmes d’aide à la conduite, de type préventif, dédiés à renforcer la sécurité du conducteur et à améliorer sa conduite. Le principal outil est un bon dispositif de simulation, vu les contraintesrencontrées pour la réalisation en pratique des tests, tel que la sécurité du pilote, le coût, etc. C’est ainsi, qu’une synthèse de trois modèles dynamiques non linéaires, àun corps, à deux corps et à cinq corps, est proposée. Une fonction de risque, relativeà l’angle de roulis du véhicule maximal, est établie. Sa variation en fonction desparamètres inertiels et géométriques de l’ensemble véhicule et conducteur, de leursdynamiques et de l’infrastructure, a fait l’objet d’une étude approfondie. La difficultéd’implémentation de nombreux capteurs, nous a conduit à concevoir des méthodesd’observation des dynamiques importantes pour la mise en pratique des systèmesde sécurité. Pour ce faire, nous avons reconstruit les grandeurs, contribuant à la dynamique latérale, par l’application de l’observateur Proportionnel Double Intégral(P2I) sur deux cas de modèles (3DDL et 4 DDL). La dernière partie du mémoire, est consacrée aux travaux réalisés sur l’instrumentation du prototype Scooter dont dispose le laboratoire. L’analyse des données enregistrées sur piste et la validation des techniques d’observation développées y sont détaillées.

The world of Powered Two Wheeled (PTW) vehicles has changed considerably in quality and performance. These vehicles have taken an important place in our live, whether for transportation or leisure, which contributed to the increasing and diversity of their park. However, the safety of users has become a concern of road institutions and research organizations, given the increasing number of accidents and vulnerability at which they are faced. Our research fall within the thematic study of modeling, observation and dynamic limit analysis of the PTW vehicles. The main objective is to design tools needed to establish safety systems, of preventive kind, dedicated to enhance driver safety and improve his conduct. The main tool is a good device simulation, given the constraints encountered in the practical realization of tests, such as driver safety, cost, etc. For this, a synthesis of three non-linear dynamic models of one body, two bodies and five bodies, is proposed. A risk function…

Advisors/Committee Members: Mammar, Said (thesis director).

Subjects/Keywords: Dynamique véhicule; Vehicle dynamics

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APA (6^th Edition):

Chenane, C. (2014). Analyse et reconstruction de la dynamique des véhicules motorisés (VDRM) et détection de situations limites de roulis : Analysis and reconstruction of powered two wheeled (PTW) vehicles dynamics and limit lean angle detection. (Doctoral Dissertation). Evry-Val d'Essonne. Retrieved from http://www.theses.fr/2014EVRY0037

Chicago Manual of Style (16^th Edition):

Chenane, Chabane. “Analyse et reconstruction de la dynamique des véhicules motorisés (VDRM) et détection de situations limites de roulis : Analysis and reconstruction of powered two wheeled (PTW) vehicles dynamics and limit lean angle detection.” 2014. Doctoral Dissertation, Evry-Val d'Essonne. Accessed March 05, 2021. http://www.theses.fr/2014EVRY0037.

MLA Handbook (7^th Edition):

Chenane, Chabane. “Analyse et reconstruction de la dynamique des véhicules motorisés (VDRM) et détection de situations limites de roulis : Analysis and reconstruction of powered two wheeled (PTW) vehicles dynamics and limit lean angle detection.” 2014. Web. 05 Mar 2021.

Vancouver:

Chenane C. Analyse et reconstruction de la dynamique des véhicules motorisés (VDRM) et détection de situations limites de roulis : Analysis and reconstruction of powered two wheeled (PTW) vehicles dynamics and limit lean angle detection. [Internet] [Doctoral dissertation]. Evry-Val d'Essonne; 2014. [cited 2021 Mar 05]. Available from: http://www.theses.fr/2014EVRY0037.

Council of Science Editors:

Chenane C. Analyse et reconstruction de la dynamique des véhicules motorisés (VDRM) et détection de situations limites de roulis : Analysis and reconstruction of powered two wheeled (PTW) vehicles dynamics and limit lean angle detection. [Doctoral Dissertation]. Evry-Val d'Essonne; 2014. Available from: http://www.theses.fr/2014EVRY0037

University of Waterloo

6. Rezaeian, Ayyoub. Development of an Integrated Estimation Method for Vehicle States, Parameters and Tire Forces.

Degree: 2015, University of Waterloo

URL: http://hdl.handle.net/10012/9125

► Stability and desirable performance of vehicle control systems are directly dependent on the quality and accuracy of sensory and estimated data provided to the controllers.… (more)

Subjects/Keywords: Estimation; Identification; Vehicle Dynamics

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APA (6^th Edition):

Rezaeian, A. (2015). Development of an Integrated Estimation Method for Vehicle States, Parameters and Tire Forces. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/9125

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

Chicago Manual of Style (16^th Edition):

Rezaeian, Ayyoub. “Development of an Integrated Estimation Method for Vehicle States, Parameters and Tire Forces.” 2015. Thesis, University of Waterloo. Accessed March 05, 2021. http://hdl.handle.net/10012/9125.

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

MLA Handbook (7^th Edition):

Rezaeian, Ayyoub. “Development of an Integrated Estimation Method for Vehicle States, Parameters and Tire Forces.” 2015. Web. 05 Mar 2021.

Vancouver:

Rezaeian A. Development of an Integrated Estimation Method for Vehicle States, Parameters and Tire Forces. [Internet] [Thesis]. University of Waterloo; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10012/9125.

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

Council of Science Editors:

Rezaeian A. Development of an Integrated Estimation Method for Vehicle States, Parameters and Tire Forces. [Thesis]. University of Waterloo; 2015. Available from: http://hdl.handle.net/10012/9125

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

University of Waterloo

7. Fry Sykora, Connor. Trailer Sway Control Using an Active Hitch.

Degree: 2017, University of Waterloo

URL: http://hdl.handle.net/10012/12208

► The handling and yaw stability characteristics of passenger vehicles are drastically changed when towing a trailer, which can lead to unsafe oscillations in the trailer… (more)

Subjects/Keywords: Vehicle Dynamics; Trailering; Active Safety

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APA (6^th Edition):

Fry Sykora, C. (2017). Trailer Sway Control Using an Active Hitch. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/12208

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

Chicago Manual of Style (16^th Edition):

Fry Sykora, Connor. “Trailer Sway Control Using an Active Hitch.” 2017. Thesis, University of Waterloo. Accessed March 05, 2021. http://hdl.handle.net/10012/12208.

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

MLA Handbook (7^th Edition):

Fry Sykora, Connor. “Trailer Sway Control Using an Active Hitch.” 2017. Web. 05 Mar 2021.

Vancouver:

Fry Sykora C. Trailer Sway Control Using an Active Hitch. [Internet] [Thesis]. University of Waterloo; 2017. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10012/12208.

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

Council of Science Editors:

Fry Sykora C. Trailer Sway Control Using an Active Hitch. [Thesis]. University of Waterloo; 2017. Available from: http://hdl.handle.net/10012/12208

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

California State University – Sacramento

8. Braden, David Patrick. Tire analysis and modelling for the development of an FSAE car.

Degree: MS, Mechanical Engineering, 2019, California State University – Sacramento

URL: http://hdl.handle.net/10211.3/210209

► Tire data from the Formula SAE Tire Testing Consortium (TTC) gathered at the Calspan tire testing facility is processed, analyzed, and modelled. Raw data from… (more)

Subjects/Keywords: Matlab; Vehicle dynamics; Data structure

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APA (6^th Edition):

Braden, D. P. (2019). Tire analysis and modelling for the development of an FSAE car. (Masters Thesis). California State University – Sacramento. Retrieved from http://hdl.handle.net/10211.3/210209

Chicago Manual of Style (16^th Edition):

Braden, David Patrick. “Tire analysis and modelling for the development of an FSAE car.” 2019. Masters Thesis, California State University – Sacramento. Accessed March 05, 2021. http://hdl.handle.net/10211.3/210209.

MLA Handbook (7^th Edition):

Braden, David Patrick. “Tire analysis and modelling for the development of an FSAE car.” 2019. Web. 05 Mar 2021.

Vancouver:

Braden DP. Tire analysis and modelling for the development of an FSAE car. [Internet] [Masters thesis]. California State University – Sacramento; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10211.3/210209.

Council of Science Editors:

Braden DP. Tire analysis and modelling for the development of an FSAE car. [Masters Thesis]. California State University – Sacramento; 2019. Available from: http://hdl.handle.net/10211.3/210209

Virginia Tech

9. Currier, Patrick Norman. A Method for Modeling and Prediction of Ground Vehicle Dynamics and Stability in Autonomous Systems.

Degree: PhD, Mechanical Engineering, 2011, Virginia Tech

URL: http://hdl.handle.net/10919/27632

► A future limitation of autonomous ground vehicle technology is the inability of current algorithmic techniques to successfully predict the allowable dynamic operating ranges of unmanned… (more)

Subjects/Keywords: Dynamic Stability; Vehicle Dynamics; Autonomous

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APA (6^th Edition):

Currier, P. N. (2011). A Method for Modeling and Prediction of Ground Vehicle Dynamics and Stability in Autonomous Systems. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/27632

Chicago Manual of Style (16^th Edition):

Currier, Patrick Norman. “A Method for Modeling and Prediction of Ground Vehicle Dynamics and Stability in Autonomous Systems.” 2011. Doctoral Dissertation, Virginia Tech. Accessed March 05, 2021. http://hdl.handle.net/10919/27632.

MLA Handbook (7^th Edition):

Currier, Patrick Norman. “A Method for Modeling and Prediction of Ground Vehicle Dynamics and Stability in Autonomous Systems.” 2011. Web. 05 Mar 2021.

Vancouver:

Currier PN. A Method for Modeling and Prediction of Ground Vehicle Dynamics and Stability in Autonomous Systems. [Internet] [Doctoral dissertation]. Virginia Tech; 2011. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10919/27632.

Council of Science Editors:

Currier PN. A Method for Modeling and Prediction of Ground Vehicle Dynamics and Stability in Autonomous Systems. [Doctoral Dissertation]. Virginia Tech; 2011. Available from: http://hdl.handle.net/10919/27632

Virginia Tech

10. Umsrithong, Anake. Deterministic and Stochastic Semi-Empirical Transient Tire Models.

Degree: PhD, Mechanical Engineering, 2012, Virginia Tech

URL: http://hdl.handle.net/10919/26270

► The tire is one of the most important components of the vehicle. It has many functions, such as supporting the load of the vehicle, transmitting… (more)

▼ The tire is one of the most important components of the vehicle. It has many functions, such as supporting the load of the vehicle, transmitting the forces which drive, brake and guide the vehicle, and acting as the secondary suspension to absorb the effect of road irregularities before transmitting the forces to the vehicle suspension. A tire is a complex reinforced rubber composite air container. The structure of the tire is very complex. It consists of several layers of synthetic polymer, many flexible filaments of high modulus cord, and glass fiber, which are bonded to a matrix of low modulus polymeric material. As the tire is the only component of the vehicle which makes contact with the road surface, almost all forces and moments acting on the vehicle must be transferred by the tire. To predict the dynamics of the vehicle, we need to know these forces and moments generated at the tire contact patch. Therefore, tire models that accurately describe this dynamic behavior are needed for vehicle dynamic simulation. Many researchers developed tire models for vehicle dynamic simulations; however, most of the development in tire modeling has been limited to deterministic steady-state on-road tire models. The research conducted in this study is concerned with the development of semi-empirical transient tire models for on-road and off-road vehicle simulations. The semi-empirical transient tire model is developed based on existed tire models, analytical tire structure mechanics analysis, and experimental data collected by various researchers. The tire models were developed for vehicle traction, handling and ride analysis. The theoretical mechanics analysis of the tire model focused on the determination of tire and terrain deformation. Then, the results are used together with empirical data to calculate the force response and the moment response. Moreover, the influence of parametric uncertainties in tire parameters on the tire-terrain interaction is investigated. The parametric uncertainties are quantified and propagated through the tire models using a polynomial chaos theory with a collocation approach. To illustrate the capabilities of the tire models developed, both deterministic and stochastic tire models are simulated for various scenarios and maneuvers. Numerically simulated results are analyzed from the perspective of vehicle dynamics. Such an analysis can be used in tire and vehicle development and design. Advisors/Committee Members: Sandu, Corina (committeechair), Ferris, John B. (committee member), Chan, Brendan Juin-Yih (committee member), Sandu, Adrian (committee member), Taheri, Saied (committee member).

Subjects/Keywords: tire model; uncertainties; vehicle dynamics

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

APA (6^th Edition):

Umsrithong, A. (2012). Deterministic and Stochastic Semi-Empirical Transient Tire Models. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/26270

Chicago Manual of Style (16^th Edition):

Umsrithong, Anake. “Deterministic and Stochastic Semi-Empirical Transient Tire Models.” 2012. Doctoral Dissertation, Virginia Tech. Accessed March 05, 2021. http://hdl.handle.net/10919/26270.

MLA Handbook (7^th Edition):

Umsrithong, Anake. “Deterministic and Stochastic Semi-Empirical Transient Tire Models.” 2012. Web. 05 Mar 2021.

Vancouver:

Umsrithong A. Deterministic and Stochastic Semi-Empirical Transient Tire Models. [Internet] [Doctoral dissertation]. Virginia Tech; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10919/26270.

Council of Science Editors:

Umsrithong A. Deterministic and Stochastic Semi-Empirical Transient Tire Models. [Doctoral Dissertation]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/26270

Texas A&M University

11. Martinez, Melissa Marisol. Using Vehicle Dynamics Simulation and Metamodels to Evaluate Factors and Mechanisms Affecting Roll Angle: An Initial Assessment.

Degree: MS, Civil Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/188887

► A rollover is defined as any vehicle rotation of 90 degrees or more about a longitudinal or lateral axis, according to NASS CDS. Rollover crashes… (more)

Subjects/Keywords: Vehicle dynamics simulations; metamodels; rollover

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APA (6^th Edition):

Martinez, M. M. (2018). Using Vehicle Dynamics Simulation and Metamodels to Evaluate Factors and Mechanisms Affecting Roll Angle: An Initial Assessment. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/188887

Chicago Manual of Style (16^th Edition):

Martinez, Melissa Marisol. “Using Vehicle Dynamics Simulation and Metamodels to Evaluate Factors and Mechanisms Affecting Roll Angle: An Initial Assessment.” 2018. Masters Thesis, Texas A&M University. Accessed March 05, 2021. http://hdl.handle.net/1969.1/188887.

MLA Handbook (7^th Edition):

Martinez, Melissa Marisol. “Using Vehicle Dynamics Simulation and Metamodels to Evaluate Factors and Mechanisms Affecting Roll Angle: An Initial Assessment.” 2018. Web. 05 Mar 2021.

Vancouver:

Martinez MM. Using Vehicle Dynamics Simulation and Metamodels to Evaluate Factors and Mechanisms Affecting Roll Angle: An Initial Assessment. [Internet] [Masters thesis]. Texas A&M University; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1969.1/188887.

Council of Science Editors:

Martinez MM. Using Vehicle Dynamics Simulation and Metamodels to Evaluate Factors and Mechanisms Affecting Roll Angle: An Initial Assessment. [Masters Thesis]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/188887

Virginia Tech

12. Zhu, Yitao. Sensitivity Analysis and Optimization of Multibody Systems.

Degree: PhD, Mechanical Engineering, 2015, Virginia Tech

URL: http://hdl.handle.net/10919/71649

► Multibody dynamics simulations are currently widely accepted as valuable means for dynamic performance analysis of mechanical systems. The evolution of theoretical and computational aspects of… (more)

▼ Multibody dynamics simulations are currently widely accepted as valuable means for dynamic performance analysis of mechanical systems. The evolution of theoretical and computational aspects of the multibody dynamics discipline make it conducive these days for other types of applications, in addition to pure simulations. One very important such application is design optimization for multibody systems. Sensitivity analysis of multibody system dynamics, which is performed before optimization or in parallel, is essential for optimization. Current sensitivity approaches have limitations in terms of efficiently performing sensitivity analysis for complex systems with respect to multiple design parameters. Thus, we bring new contributions to the state-of-the-art in analytical sensitivity approaches in this study. A direct differentiation method is developed for multibody dynamic models that employ Maggi's formulation. An adjoint variable method is developed for explicit and implicit first order Maggi's formulations, second order Maggi's formulation, and first and second order penalty formulations. The resulting sensitivities are employed to perform optimization of different multibody systems case studies. The collection of benchmark problems includes a five-bar mechanism, a full vehicle model, and a passive dynamic robot. The five-bar mechanism is used to test and validate the sensitivity approaches derived in this paper by comparing them with other sensitivity approaches. The full vehicle system is used to demonstrate the capability of the adjoint variable method based on the penalty formulation to perform sensitivity analysis and optimization for large and complex multibody systems with respect to multiple design parameters with high efficiency. In addition, a new multibody dynamics software library MBSVT (Multibody Systems at Virginia Tech) is developed in Fortran 2003, with forward kinematics and dynamics, sensitivity analysis, and optimization capabilities. Several different contact and friction models, which can be used to model point contact and surface contact, are developed and included in MBSVT. Finally, this study employs reference point coordinates and the penalty formulation to perform dynamic analysis for the passive dynamic robot, simplifying the modeling stage and making the robotic system more stable. The passive dynamic robot is also used to test and validate all the point contact and surface contact models developed in MBSVT. Advisors/Committee Members: Sandu, Adrian (committeechair), Sandu, Corina (committeechair), Southward, Steve C. (committee member), Dopico Dopico, Daniel (committee member), Bohn, Jan Helge (committee member).

Subjects/Keywords: Sensitivity Analysis; Optimization; Multibody Dynamics; Vehicle Dynamics

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APA (6^th Edition):

Zhu, Y. (2015). Sensitivity Analysis and Optimization of Multibody Systems. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/71649

Chicago Manual of Style (16^th Edition):

Zhu, Yitao. “Sensitivity Analysis and Optimization of Multibody Systems.” 2015. Doctoral Dissertation, Virginia Tech. Accessed March 05, 2021. http://hdl.handle.net/10919/71649.

MLA Handbook (7^th Edition):

Zhu, Yitao. “Sensitivity Analysis and Optimization of Multibody Systems.” 2015. Web. 05 Mar 2021.

Vancouver:

Zhu Y. Sensitivity Analysis and Optimization of Multibody Systems. [Internet] [Doctoral dissertation]. Virginia Tech; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10919/71649.

Council of Science Editors:

Zhu Y. Sensitivity Analysis and Optimization of Multibody Systems. [Doctoral Dissertation]. Virginia Tech; 2015. Available from: http://hdl.handle.net/10919/71649

University of Waterloo

13. Spike, Jonathan. Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation.

Degree: 2013, University of Waterloo

URL: http://hdl.handle.net/10012/7983

► As vehicle dynamics research delves deeper into better insights in performance, modeling, and vehicle controls, one area remains of utmost importance: tire and road friction… (more)

▼ As vehicle dynamics research delves deeper into better insights in performance, modeling, and vehicle controls, one area remains of utmost importance: tire and road friction forces. The vehicle’s interaction with the road remains the dominant mean of vehicle control. Ultimately, the tire-road interaction will determine the majority of the vehicle’s capabilities and as the understanding of the interface improves, so too can the performance. With more computationally intensive systems being instrumented into modern vehicle systems, one is able to observe a great deal of important vehicle states directly for the remaining vehicle information; excellent estimation techniques are providing the rest of the insights. This study looks at the possible improvements that can be observed by implementing an adaptive dynamic tire model that is physical and flexible enough to permit time varying tire performance. The tire model selected is the Average Lumped LuGre Friction Tire Model, which was originally developed from physical properties of friction and tire systems. The material presented here examines the possibility of an adaptive tire model, which can be implemented on a real-time vehicle platform. The adaptive tire model is just one section of an entire control strategy that is being developed by General Motors in partnership with the University of Waterloo. The approach allows for estimated and measured vehicle information to provide input excitation for the tire model when driven with real-world conditions that enabling tire estimations. The tire model would then provide the controller information indicating the expected tire capacity and compares it with the instantaneous loading. The adaptive tire model has been tested with flat road experimental cases and the results provided reasonable estimates. The experimentation was performed with a fully instrumented research vehicle that used in-wheel force transducers, and later repeated with a completely different non-instrumented fully electric vehicle. The concepts and investigation presented here has initiated the ground work for a real-time implementation of a full adaptive tire model. Further work is still required to evaluate the influence of a range of operating conditions, tire pressure, and of different tire types. However, the findings indicate that this approach can produce reasonable results for the specified conditions examined.

Subjects/Keywords: Vehicle Dynamics; Vehicle Tire Estimation; Vehicle Tire Forces; Tire Model

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

APA (6^th Edition):

Spike, J. (2013). Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/7983

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

Chicago Manual of Style (16^th Edition):

Spike, Jonathan. “Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation.” 2013. Thesis, University of Waterloo. Accessed March 05, 2021. http://hdl.handle.net/10012/7983.

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

MLA Handbook (7^th Edition):

Spike, Jonathan. “Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation.” 2013. Web. 05 Mar 2021.

Vancouver:

Spike J. Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation. [Internet] [Thesis]. University of Waterloo; 2013. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10012/7983.

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

Council of Science Editors:

Spike J. Adaptive Tire Model For Dynamic Tire-Road Friction Force Estimation. [Thesis]. University of Waterloo; 2013. Available from: http://hdl.handle.net/10012/7983

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

University of Pretoria

14. Kapp, Michael. Robust High Speed Autonomous Steering of an Off-Road Vehicle.

Degree: Mechanical and Aeronautical Engineering, 2015, University of Pretoria

URL: http://hdl.handle.net/2263/43784

► A ground vehicle is a dynamic system containing many non-linear components, ranging from the non-linear engine response to the tyre-road interface. In pursuit of developing… (more)

▼ A ground vehicle is a dynamic system containing many non-linear components, ranging from the non-linear engine response to the tyre-road interface. In pursuit of developing driver-assist systems for accident avoidance, as well as fully autonomous vehicles, the application of modern mechatronics systems to vehicles are widely investigated. Extensive work has been done in an attempt to model and control the lateral response of the vehicle system utilising a wide variety of conventional control and intelligent systems theory. The majority of driver models are however intended for low speed applications where the vehicle dynamics are fairly linear. This study proposes the use of adaptive control strategies as robust driver models capable of steering the vehicle without explicit knowledge of vehicle parameters. A Model Predictive Controller (MPC), self-tuning regulator and Linear Quadratic Self-Tuning Regulator (LQSTR) updated through the use of an Auto Regression with eXogenous input (ARX) model that describes the relation between the vehicle steering angle and yaw rate are considered as solutions. The strategies are evaluated by performing a double lane change in simulation using a validated full vehicle model in MSC ADAMS and comparing the maximum stable speed and lateral offset from the required path. It is found that all the adaptive controllers are able to successfully steer the vehicle through the manoeuvre with no prior knowledge of the vehicle parameters. An LQSTR proves to be the best adaptive strategy for driver model applications, delivering a stable response well into the non-linear tyre force regime. This controller is implemented on a fully instrumented Land Rover 110 of the Vehicle Dynamics Group at the University of Pretoria fitted with a semi-active spring-damper suspension that can be switched between two discrete setting representing opposite extremes of the desired response namely: ride mode (soft spring and low damping) and handling mode (stiff spring and high damping). The controller yields a stable response through a severe double lane change (DLC) up to the handling limit of the vehicle, safely completing the DLC at a maximum speed of 90 km/h all suspension configurations. The LQSTR also proves to be robust by following the same path for all suspension configurations through the manoeuvre for vehicle speeds up to 75 km/h. Validation is continued by successfully navigating the Gerotek dynamic handling track, as well as by performing a DLC manoeuvre on an off-road terrain. The study successfully developed and validated a driver model that is robust against variations in vehicle parameters and friction coefficients. Advisors/Committee Members: Els, P.S. (Pieter Schalk) (advisor).

Subjects/Keywords: Vehicle Engineering; Autonomous Vehicle; Optimal Control; Off-road vehicle dynamics; UCTD

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

APA (6^th Edition):

Kapp, M. (2015). Robust High Speed Autonomous Steering of an Off-Road Vehicle. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/43784

Chicago Manual of Style (16^th Edition):

Kapp, Michael. “Robust High Speed Autonomous Steering of an Off-Road Vehicle.” 2015. Masters Thesis, University of Pretoria. Accessed March 05, 2021. http://hdl.handle.net/2263/43784.

MLA Handbook (7^th Edition):

Kapp, Michael. “Robust High Speed Autonomous Steering of an Off-Road Vehicle.” 2015. Web. 05 Mar 2021.

Vancouver:

Kapp M. Robust High Speed Autonomous Steering of an Off-Road Vehicle. [Internet] [Masters thesis]. University of Pretoria; 2015. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2263/43784.

Council of Science Editors:

Kapp M. Robust High Speed Autonomous Steering of an Off-Road Vehicle. [Masters Thesis]. University of Pretoria; 2015. Available from: http://hdl.handle.net/2263/43784

Université Catholique de Louvain

15. Verlé, Aubain. Joint optimization of vehicle dynamics and mechanical design through a multi-body based strategy.

Degree: 2019, Université Catholique de Louvain

URL: http://hdl.handle.net/2078.1/222567

►

In a context of technical, ideological, social and political upheavals, the mobility is, today more than ever, deeply questioned. The automotive industry must constantly reinvent… (more)

▼

In a context of technical, ideological, social and political upheavals, the mobility is, today more than ever, deeply questioned. The automotive industry must constantly reinvent itself and, to do so, develops both innovative technologies and the design methods able to optimize them and to integrate them into new solutions. Thus, considering ever more numerous and diversified aspects, the design of vehicles responding to current and future challenges is an ever more ambitious task. This thesis aims at proposing a multidisciplinary and integrated design approach, specifically addressed to the conception of road vehicles. Precisely, the strategy consists of the synthesis of automobile suspensions, the optimization of their kinematics in order to obtain the best road performances, while taking the mechanical constraints of design and manufacturing into account. An algorithm combining several numerical processes based on the multibody formalism allows, first, to satisfy the constraints to which the vehicle is subjected, then to test this vehicle through a hybrid simulator in which transient simulation and steady-state analysis are juxtaposed, and finally, to evaluate it according to the whole of selected criteria. The method enables obtaining judicious trade-off between the exhaustiveness of the tests and the criteria and the computational time and, thus, handling the design process in its wholeness, in a consistent and efficient way. This strategy has been successfully applied to the design of a new concept of electric unipersonal three-wheeler dedicated to urban mobility: the Wemoov, characterized by its narrowness imposing its tilting in curve. This particular dynamics has been made possible by the development of an innovative front axle.

Optimisation conjointe de la dynamique et de la conception mécanique de véhicules routiers au travers d’une stratégie basée sur l’approche multi-corps Dans un contexte de bouleversements techniques, idéologiques, sociaux et politiques, la mobilité est, aujourd’hui plus que jamais, profondément remise en question. L’industrie automobile doit sans cesse se réinventer et, pour se faire, développe autant les technologies innovantes que les méthodes de conception capables de les optimiser et de les intégrer au sein de nouvelles solutions. Ainsi, considérant des facteurs toujours plus nombreux et diversifiés, la conception de véhicules répondant aux défis actuels et futurs est une tâche toujours plus ardue. L’objectif de la thèse est de proposer une démarche de conception multidisciplinaire et intégrée, spécifiquement dédié à la création de véhicules routiers. Précisément, la stratégie consiste en la synthèse de suspensions automobiles, l’optimisation de leur cinématique en vue d’obtenir les meilleures performances routières, tout en tenant compte des contraintes mécaniques de conception et de fabrication. Un algorithme combinant plusieurs méthodes numériques sur la base du formalisme multi-corps permet, d’une part, de satisfaire les contraintes auxquelles le véhicule est soumis,…

Advisors/Committee Members: UCL - SST/IMMC/MEED - Mechatronic, Electrical Energy, and Dynamics Systems, UCL - Ecole Polytechnique de Louvain, Fisette, Paul, Dehez, Bruno, Jeanmart, Hervé, Docquier, Nicolas, Verlinden, Olivier, Schwab, Arend.

Subjects/Keywords: Dynamics optimization; Vehicle performances; Vehicle dynamics; Suspension design; Mechanical design; Multi-body dynamics; Robotran; Tilting vehicle; Three-wheeler

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

APA (6^th Edition):

Verlé, A. (2019). Joint optimization of vehicle dynamics and mechanical design through a multi-body based strategy. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/222567

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

Chicago Manual of Style (16^th Edition):

Verlé, Aubain. “Joint optimization of vehicle dynamics and mechanical design through a multi-body based strategy.” 2019. Thesis, Université Catholique de Louvain. Accessed March 05, 2021. http://hdl.handle.net/2078.1/222567.

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

MLA Handbook (7^th Edition):

Verlé, Aubain. “Joint optimization of vehicle dynamics and mechanical design through a multi-body based strategy.” 2019. Web. 05 Mar 2021.

Vancouver:

Verlé A. Joint optimization of vehicle dynamics and mechanical design through a multi-body based strategy. [Internet] [Thesis]. Université Catholique de Louvain; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2078.1/222567.

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

Council of Science Editors:

Verlé A. Joint optimization of vehicle dynamics and mechanical design through a multi-body based strategy. [Thesis]. Université Catholique de Louvain; 2019. Available from: http://hdl.handle.net/2078.1/222567

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

University of Toronto

16. Kim, Yesul. Quantification of Vehicle-induced Turbulence on Roadways Using Computational Fluid Dynamics Simulation.

Degree: 2011, University of Toronto

URL: http://hdl.handle.net/1807/31283

►

Turbulence is a significant factor in near-road air quality, as it affects the initial dilution, dispersion, and the ultimate fate of pollutants. This study used… (more)

Subjects/Keywords: Computational Fluid Dynamics; Vehicle-induced Turbulence; 0542

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APA (6^th Edition):

Kim, Y. (2011). Quantification of Vehicle-induced Turbulence on Roadways Using Computational Fluid Dynamics Simulation. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/31283

Chicago Manual of Style (16^th Edition):

Kim, Yesul. “Quantification of Vehicle-induced Turbulence on Roadways Using Computational Fluid Dynamics Simulation.” 2011. Masters Thesis, University of Toronto. Accessed March 05, 2021. http://hdl.handle.net/1807/31283.

MLA Handbook (7^th Edition):

Kim, Yesul. “Quantification of Vehicle-induced Turbulence on Roadways Using Computational Fluid Dynamics Simulation.” 2011. Web. 05 Mar 2021.

Vancouver:

Kim Y. Quantification of Vehicle-induced Turbulence on Roadways Using Computational Fluid Dynamics Simulation. [Internet] [Masters thesis]. University of Toronto; 2011. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1807/31283.

Council of Science Editors:

Kim Y. Quantification of Vehicle-induced Turbulence on Roadways Using Computational Fluid Dynamics Simulation. [Masters Thesis]. University of Toronto; 2011. Available from: http://hdl.handle.net/1807/31283

University of Waikato

17. Kopf, Larissa Franziska. Dynamic analysis of the WESMO FSAE car’s suspension .

Degree: 2020, University of Waikato

URL: http://hdl.handle.net/10289/13664

► Over the years motorsport has become a large part of society with many millions of dollars spent on the design and development of the cars.… (more)

▼ Over the years motorsport has become a large part of society with many millions of dollars spent on the design and development of the cars. However, with many racing series evening out the playing field between low and high budget teams by introducing restrictions, especially around engine size, suspension and vehicle dynamics analysis have become a big factor in reducing lap times. This is true for high end racing such as Formula 1 down to entry level racing such as Formulae SAE, a racing series where tertiary students design and manufacture single seater race cars. The following research was centred on the vehicle dynamic analysis of the SAE car manufactured by the University of Waikato in Hamilton, New Zealand, in 2018. In particular, the focus was on suspension tuning and understanding the relationship between suspension and tyre parameters. Theoretical models were developed based on geometric data and tyre data available for the car. Furthermore, the effect of spring rate, camber angle, tyre pressure and damping rates on traction coefficients were investigated. A low tyre pressure (8 PSI), as well as a high pressure (14 PSI), reduced the lateral force capable of being produced during cornering. A softer spring at the rear (225 lbs/in) allowed more grip and a stiffer front (250 lbs/in) allowed for a good response during steering input, whereas a change in camber between 0° and 3° was negligible on the traction coefficient. The theoretical models were verified using track data gathered by sensors on the car and logged through a CDL3 MoTeC dash data logger. The lap time for a 1.2 km track could be decreased by up to seven seconds by tuning the suspension parameters to increase the grip of the car during cornering. This was achieved by decreasing the low speed rebound damping on the shocks to allow more compliance between the road and the tyre reducing understeer. Different methods of diagnosing understeer were investigated as the car did not have a yaw sensor. A comparison between front and rear tyre slip angles (calculated based on logged data) gave the most accurate results compared to purely investigating the steering wheel angle or calculating the difference between wheel angle and Ackermann angle. Furthermore, the amount of roll was optimised by implementing a soft antiroll bar at the front and the rear of the car, allowing enough roll for driver feedback but limiting it to eliminate jacking of the wheel. Overall the beneficial effect of correct and in-depth suspension tuning was found to be substantial. Good tuning, however, is not a remedy for badly designed suspension. The 2018 WESMO car had a well-designed suspension, making tuning possible and beneficial. If the 2018 car’s suspension had been tuned properly, the team could have potentially placed third instead of eighth in the autocross event at the 2018 Formula SAE competition at Winton Motor Raceway in Australia. Advisors/Committee Members: Lay, Mark C (advisor), Tighe, Rachael (advisor).

Subjects/Keywords: WESMO; FSAE; SUSPENSION; VEHICLE DYNAMICS; AUTOMOTIVE ENGINEERING

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

APA (6^th Edition):

Kopf, L. F. (2020). Dynamic analysis of the WESMO FSAE car’s suspension . (Masters Thesis). University of Waikato. Retrieved from http://hdl.handle.net/10289/13664

Chicago Manual of Style (16^th Edition):

Kopf, Larissa Franziska. “Dynamic analysis of the WESMO FSAE car’s suspension .” 2020. Masters Thesis, University of Waikato. Accessed March 05, 2021. http://hdl.handle.net/10289/13664.

MLA Handbook (7^th Edition):

Kopf, Larissa Franziska. “Dynamic analysis of the WESMO FSAE car’s suspension .” 2020. Web. 05 Mar 2021.

Vancouver:

Kopf LF. Dynamic analysis of the WESMO FSAE car’s suspension . [Internet] [Masters thesis]. University of Waikato; 2020. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10289/13664.

Council of Science Editors:

Kopf LF. Dynamic analysis of the WESMO FSAE car’s suspension . [Masters Thesis]. University of Waikato; 2020. Available from: http://hdl.handle.net/10289/13664

Bucknell University

18. Lifschitz Arribio, Mauro David. Automobile Safety Systems: Improvement of a Method to Estimate Tire Friction Coefficients in Passenger Vehicles.

Degree: 2015, Bucknell University

URL: https://digitalcommons.bucknell.edu/masters_theses/152

► The improvement of data collection and computing capabilities on modern vehicles has made possible the creation of innovative vehicle control systems. These systems improve vehicle… (more)

▼ The improvement of data collection and computing capabilities on modern vehicles has made possible the creation of innovative vehicle control systems. These systems improve vehicle handling and general passenger safety, reducing the number of casualties and cost related to passenger vehicle crashes. Such systems utilize the measurements produced by sensors in modern vehicles that provide meaningful information about the state of different components of the vehicle, such as traction torque and rotational velocity of the individual tires. Although this information has proven useful, significant information about the vehicle's interaction with the road and its operating conditions, such as the maximum lateral force that can be produced by the tires, is still largely unavailable. Stability control systems help stabilize passenger vehicles by controlling the braking of the individual tires, which changes the forces they produce. Because these systems are constrained by the adhesion limit given by the friction coefficient, knowledge of the road conditions is an important factor in their performance. This project analyzes an estimation structure which allows the estimation of real time tire friction coefficients with the road using measurements of longitudinal, lateral, and rotational velocities and steering torque applied on the wheels. More specifically, the contributions of the work presented in this thesis are: An investigation of the theory behind the existing algorithms to estimate friction coefficient values is conducted. A friction estimating algorithm based on pneumatic trail measurements introduced by Hsu, Laws, and Herdes is re-based on a pneumatic trail model introduced by Ren and Guo, improving the estimation accuracy at low slip angles. An analysis of the sensitivity of the algorithm to the expected noise involved in the measurement of the input variables is presented. A data filtering process based on a Kalman Filter design is introduced. This filter utilizes the calculated uncertainty of the estimated friction values and multiple redundant estimations from each tire of the vehicle to increase the accuracy and performance of the proposed friction estimation method. A computational algorithm that recognizes "real" changes in the estimated friction coefficients, which is based in a Limit Checking Detector algorithm, is also presented. It is important to note that the actual friction coefficient of passenger vehicle tires might rapidly fluctuate as the vehicle moves. The main purpose of this change detection algorithm is to identify sudden significant changes in the average friction coefficient, limiting the influence of rapid erratic fluctuations on the real-time data being displayed. The implementation of these algorithms has the potential of being a significant advance in the automobile safety system field, as it would provide a more accurate method to obtain important information about the vehicle's interaction with the road compared to other proposed methods. Moreover, this algorithm utilizes…

Subjects/Keywords: Vehicle dynamics; Friction coefficient estimation; Pneumatic trail

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APA (6^th Edition):

Lifschitz Arribio, M. D. (2015). Automobile Safety Systems: Improvement of a Method to Estimate Tire Friction Coefficients in Passenger Vehicles. (Thesis). Bucknell University. Retrieved from https://digitalcommons.bucknell.edu/masters_theses/152

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

Chicago Manual of Style (16^th Edition):

Lifschitz Arribio, Mauro David. “Automobile Safety Systems: Improvement of a Method to Estimate Tire Friction Coefficients in Passenger Vehicles.” 2015. Thesis, Bucknell University. Accessed March 05, 2021. https://digitalcommons.bucknell.edu/masters_theses/152.

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

MLA Handbook (7^th Edition):

Lifschitz Arribio, Mauro David. “Automobile Safety Systems: Improvement of a Method to Estimate Tire Friction Coefficients in Passenger Vehicles.” 2015. Web. 05 Mar 2021.

Vancouver:

Lifschitz Arribio MD. Automobile Safety Systems: Improvement of a Method to Estimate Tire Friction Coefficients in Passenger Vehicles. [Internet] [Thesis]. Bucknell University; 2015. [cited 2021 Mar 05]. Available from: https://digitalcommons.bucknell.edu/masters_theses/152.

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

Council of Science Editors:

Lifschitz Arribio MD. Automobile Safety Systems: Improvement of a Method to Estimate Tire Friction Coefficients in Passenger Vehicles. [Thesis]. Bucknell University; 2015. Available from: https://digitalcommons.bucknell.edu/masters_theses/152

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

University of Cambridge

19. Braghieri, Giovanni. Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver.

Degree: PhD, 2018, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/275524

► The work undertaken in this research aims to develop a mathematical model which can replicate the behaviour of a racing driver controlling a vehicle at… (more)

Subjects/Keywords: driver modelling; vehicle dynamics; MPC control

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APA (6^th Edition):

Braghieri, G. (2018). Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/275524

Chicago Manual of Style (16^th Edition):

Braghieri, Giovanni. “Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver.” 2018. Doctoral Dissertation, University of Cambridge. Accessed March 05, 2021. https://www.repository.cam.ac.uk/handle/1810/275524.

MLA Handbook (7^th Edition):

Braghieri, Giovanni. “Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver.” 2018. Web. 05 Mar 2021.

Vancouver:

Braghieri G. Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver. [Internet] [Doctoral dissertation]. University of Cambridge; 2018. [cited 2021 Mar 05]. Available from: https://www.repository.cam.ac.uk/handle/1810/275524.

Council of Science Editors:

Braghieri G. Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver. [Doctoral Dissertation]. University of Cambridge; 2018. Available from: https://www.repository.cam.ac.uk/handle/1810/275524

University of Bath

20. Van Poelgeest, Auguste. The dynamics and control of a three-wheeled tilting vehicle.

Degree: PhD, 2011, University of Bath

URL: https://researchportal.bath.ac.uk/en/studentthesis/the-dynamics-and-control-of-a-threewheeled-tilting-vehicle(b030e49c-3e2c-43b6-8952-97b5637cf394).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.535640

► The objective of this study was to develop a new Steer Tilt Control (STC) algorithm inspired by real driver behaviour and to test it in… (more)

▼ The objective of this study was to develop a new Steer Tilt Control (STC) algorithm inspired by real driver behaviour and to test it in simulation with an experimentally validated non-linear vehicle model. In order to develop an exhaustive simulation model of the vehicle and to process experimental data correctly, a large number of modelling aspects were taken into consideration. The objective of the study was to identify the unique kinematics of a three-wheeled tilting vehicle and determine the importance of the kinematic effects on the vehicle system. In order to fully understand this unique class of vehicle, the effect of the driver’s mass on the vehicle inertia’s and the effect of the tilting on the vehicle’s yaw inertia were considered. A wide-ranging expression for the driver’s perceived acceleration was derived and the roll dynamics of the non-tilting part of the three-wheeled tilting vehicle assembly were modelled. The steering torque of the vehicle as fully analysed and, using the simulation model, methods to model the effect of a crosswind on the vehicle, to test the effect of driving up or downhill, and to determine the effect of road camber on the vehicle dynamics were considered. To create a better understanding of the control task, road experiments were carried out using an instrumented tilting three-wheeler to investigate the driver steer inputs necessary to both balance the vehicle and follow a fixed trajectory. The experimental results demonstrated that the drivers’ steering inputs varied even though they had to complete identical tasks. This result confirmed that there are multiple ways to control the roll of the vehicle. The results also showed that the tilt angle always led the steering angle and for a transient manoeuvre, the tilt angle was larger than the balanced tilt angle at the start of the manoeuvre and smaller than the balanced angle at the end of the manoeuvre. The next step in the investigation was the development of a comprehensive non-linear dynamics model of a tilting three-wheeler including a tyre model and a driver model. A new method was developed to estimate the parameters of a Magic Formula Tyre model using the road testing data. The vehicle and tyre model were validated using data from a range of test runs. The importance of a driver in the loop was recognised and the elements of a driver trajectory-tracking model were studied. The aim was to develop a driver model that demonstrated good i tracking and some similarity to real driver behaviour. The final model used the yaw rate demand to determine an anticipatory control steer angle and the current heading error and the vehicle’s lateral position error measured in the vehicle’s local axis system to make small steering adjustments. The STC method based on Proportional Integral Derivative (PID) control was tested with the vehicle model to determine its performance with the non-linear dynamics and the driver in the loop. It was shown that the driver model had the tendency to act against the STC and that the two could only act…

Subjects/Keywords: 629.2; control systems; computer modelling; vehicle dynamics

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APA (6^th Edition):

Van Poelgeest, A. (2011). The dynamics and control of a three-wheeled tilting vehicle. (Doctoral Dissertation). University of Bath. Retrieved from https://researchportal.bath.ac.uk/en/studentthesis/the-dynamics-and-control-of-a-threewheeled-tilting-vehicle(b030e49c-3e2c-43b6-8952-97b5637cf394).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.535640

Chicago Manual of Style (16^th Edition):

Van Poelgeest, Auguste. “The dynamics and control of a three-wheeled tilting vehicle.” 2011. Doctoral Dissertation, University of Bath. Accessed March 05, 2021. https://researchportal.bath.ac.uk/en/studentthesis/the-dynamics-and-control-of-a-threewheeled-tilting-vehicle(b030e49c-3e2c-43b6-8952-97b5637cf394).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.535640.

MLA Handbook (7^th Edition):

Van Poelgeest, Auguste. “The dynamics and control of a three-wheeled tilting vehicle.” 2011. Web. 05 Mar 2021.

Vancouver:

Van Poelgeest A. The dynamics and control of a three-wheeled tilting vehicle. [Internet] [Doctoral dissertation]. University of Bath; 2011. [cited 2021 Mar 05]. Available from: https://researchportal.bath.ac.uk/en/studentthesis/the-dynamics-and-control-of-a-threewheeled-tilting-vehicle(b030e49c-3e2c-43b6-8952-97b5637cf394).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.535640.

Council of Science Editors:

Van Poelgeest A. The dynamics and control of a three-wheeled tilting vehicle. [Doctoral Dissertation]. University of Bath; 2011. Available from: https://researchportal.bath.ac.uk/en/studentthesis/the-dynamics-and-control-of-a-threewheeled-tilting-vehicle(b030e49c-3e2c-43b6-8952-97b5637cf394).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.535640

Delft University of Technology

21. Nieuwenhuijsen, J.A.H. (author). Diffusion of Automated Vehicles: A quantitative method to model the diffusion of automated vehicles with system dynamics.

Degree: 2015, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:0f3f5155-88ec-4f66-bb3b-4a60fec61863

►

This research presents a novel simulation model that shows the dynamic and complex nature of the innovation system of vehicle automation in a quantitative way.… (more)

Subjects/Keywords: vehicle automation; innovation diffusion; system dynamics

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APA (6^th Edition):

Nieuwenhuijsen, J. A. H. (. (2015). Diffusion of Automated Vehicles: A quantitative method to model the diffusion of automated vehicles with system dynamics. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:0f3f5155-88ec-4f66-bb3b-4a60fec61863

Chicago Manual of Style (16^th Edition):

Nieuwenhuijsen, J A H (author). “Diffusion of Automated Vehicles: A quantitative method to model the diffusion of automated vehicles with system dynamics.” 2015. Masters Thesis, Delft University of Technology. Accessed March 05, 2021. http://resolver.tudelft.nl/uuid:0f3f5155-88ec-4f66-bb3b-4a60fec61863.

MLA Handbook (7^th Edition):

Nieuwenhuijsen, J A H (author). “Diffusion of Automated Vehicles: A quantitative method to model the diffusion of automated vehicles with system dynamics.” 2015. Web. 05 Mar 2021.

Vancouver:

Nieuwenhuijsen JAH(. Diffusion of Automated Vehicles: A quantitative method to model the diffusion of automated vehicles with system dynamics. [Internet] [Masters thesis]. Delft University of Technology; 2015. [cited 2021 Mar 05]. Available from: http://resolver.tudelft.nl/uuid:0f3f5155-88ec-4f66-bb3b-4a60fec61863.

Council of Science Editors:

Nieuwenhuijsen JAH(. Diffusion of Automated Vehicles: A quantitative method to model the diffusion of automated vehicles with system dynamics. [Masters Thesis]. Delft University of Technology; 2015. Available from: http://resolver.tudelft.nl/uuid:0f3f5155-88ec-4f66-bb3b-4a60fec61863

Delft University of Technology

22. Fritz, Casper (author). A comparison of dynamic and kinematic observers: regarding roll and pitch of a vehicle.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:ff244a47-3707-4ccc-90b5-657002637a82

► The automotive industry is continuously improving the safety and comfort of the vehicles. To improve the safety and comfort of the vehicle more focus is… (more)

▼ The automotive industry is continuously improving the safety and comfort of the vehicles. To improve the safety and comfort of the vehicle more focus is put on improving driver assistance systems and also on making the vehicles more autonomous. In order for the safety systems to work properly and also to drive autonomously, it becomes essential that the vehicle has accurate knowledge of all the states of the vehicle. Two of such states are the roll and pitch angle. They are used to correct the images of a stereo camera, in roll control systems and for comfort assessment in autonomous vehicles. Measuring the roll and pitch angle is in practice problematic. Gyroscopes are mostly used to calculate the roll and pitch angle by integrating the angular rates with respect to time. If low quality gyroscopes are used, this leads to inaccurate calculation of the roll and pitch angle, because the measurements contain noise or bias accumulated during the integration process. To use these low quality gyroscopes, they need to be incorporated in an robust algorithm together with other sensors. Only then the roll and pitch angle can be estimated accurately. In this thesis a dynamic observer is developed, which has an internal vehicle dynamic model that calculates the tyre forces using an exponential tyre model. The performance of the observer is not only assessed using the true roll and pitch angle, but also compared against the performance of a kinematic observer. To test the performance of both observers various test manoeuvres were executed in IPG CarMaker, which is a highly advanced vehicle simulation environment. The manoeuvres consisted of rapid steering inputs and hard braking to execute large roll and pitch angles. Sensor noise was added to the inputs of the observers to simulate low quality sensors. In this thesis it has been shown that incorporating dynamics into an observer significantly increases its estimation performance and outperforms the kinematic observer during all manoeuvres when sensor noise was added to the inputs of the observers. The contribution of this thesis to the scientific field is that an exponential tyre model is used for the calculation of the roll and pitch angle in the internal vehicle dynamic model of the dynamic observer. Another contribution is that this thesis not only compares the performance of the dynamic observer against the real roll and pitch angles, but also against a kinematic observer, to see what the estimation improvement is when including dynamic relations. Advisors/Committee Members: Shyrokau, Barys (mentor), Happee, Riender (graduation committee), Schwab, Arend (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: state estimation; Kalman Filter; Vehicle dynamics; Automotive

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APA (6^th Edition):

Fritz, C. (. (2018). A comparison of dynamic and kinematic observers: regarding roll and pitch of a vehicle. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:ff244a47-3707-4ccc-90b5-657002637a82

Chicago Manual of Style (16^th Edition):

Fritz, Casper (author). “A comparison of dynamic and kinematic observers: regarding roll and pitch of a vehicle.” 2018. Masters Thesis, Delft University of Technology. Accessed March 05, 2021. http://resolver.tudelft.nl/uuid:ff244a47-3707-4ccc-90b5-657002637a82.

MLA Handbook (7^th Edition):

Fritz, Casper (author). “A comparison of dynamic and kinematic observers: regarding roll and pitch of a vehicle.” 2018. Web. 05 Mar 2021.

Vancouver:

Fritz C(. A comparison of dynamic and kinematic observers: regarding roll and pitch of a vehicle. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Mar 05]. Available from: http://resolver.tudelft.nl/uuid:ff244a47-3707-4ccc-90b5-657002637a82.

Council of Science Editors:

Fritz C(. A comparison of dynamic and kinematic observers: regarding roll and pitch of a vehicle. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:ff244a47-3707-4ccc-90b5-657002637a82

University of Illinois – Urbana-Champaign

23. Liu, Nanjun. Identification and control of an automated off highway agricultural vehicle.

Degree: MS, 0133, 2013, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/45698

► The main objective of this study was to develop an automated agricultural vehicle guidance system that can be easily transplanted from vehicle to vehicle. The… (more)

Subjects/Keywords: Iterative Learning Control; System Identification; Vehicle Dynamics

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APA (6^th Edition):

Liu, N. (2013). Identification and control of an automated off highway agricultural vehicle. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/45698

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

Chicago Manual of Style (16^th Edition):

Liu, Nanjun. “Identification and control of an automated off highway agricultural vehicle.” 2013. Thesis, University of Illinois – Urbana-Champaign. Accessed March 05, 2021. http://hdl.handle.net/2142/45698.

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

MLA Handbook (7^th Edition):

Liu, Nanjun. “Identification and control of an automated off highway agricultural vehicle.” 2013. Web. 05 Mar 2021.

Vancouver:

Liu N. Identification and control of an automated off highway agricultural vehicle. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2013. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2142/45698.

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

Council of Science Editors:

Liu N. Identification and control of an automated off highway agricultural vehicle. [Thesis]. University of Illinois – Urbana-Champaign; 2013. Available from: http://hdl.handle.net/2142/45698

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

Virginia Tech

24. Li, Yi. Effective Simplified Finite Element Tire Models for Vehicle Dynamics Simulation.

Degree: PhD, Mechanical Engineering, 2017, Virginia Tech

URL: http://hdl.handle.net/10919/97271

► The research focuses on developing a methodology for modeling a pneumatic bias-ply tire with the finite element method for vehicle dynamics simulation. The tire as… (more)

▼ The research focuses on developing a methodology for modeling a pneumatic bias-ply tire with the finite element method for vehicle dynamics simulation. The tire as a load-carrying member in a vehicle system deserves emphasized formulation especially for the contact patch because its representation of mechanics in the contact patch directly impacts the handling and ride performance of a vehicle. On the other hand, the load transfer from the contact patch to the wheel hub is necessary for determining the inputs to a chassis. A finite element (FE) tire model has strong capability to handle these two issues. However, the high cost of computing resources restrains its application mainly in the tire design domain. This research aims to investigate how to balance the complexity of a simplified FE tire model without diminishing its capability towards representing the load transmission for vehicle dynamics simulation. The traditional FE tire model developed by tire suppliers usually consists of an extremely large number of elements, which makes it impossible to be included in a full-vehicle dynamics simulation. The material properties required by tire companies' FE tire models are protected. The car companies have an increasing need for a physical-based tire model to understand more about the interaction between the tire and chassis. A gap between the two sides occurs because the model used for tire design cannot directly help car companies for their purpose. All of these reasons motivate the current research to provide a solution to narrow this gap. Other modern tire models for vehicle dynamics, e.g. FTire or TAME, require a series of full-tire tests to calibrate their model parameters, which is expensive and time-consuming. One great merit of the proposed simplified FE tire model is that determining model inputs only requires small-scale specimen tests instead of full-tire tests. Because much of the usability of a model hinges on whether its input parameters are easily determined, this feature makes the current model low cost and easily accessible in the absence of proprietary information from the tire supplier. A Hoosier LC0 racing tire was selected as a proof of modeling concept. All modeling work was carried out using the general purpose commercial software Abaqus. The developed model was validated through static load-deflection test data together with Digital Image Correlation (DIC) data. The finite element models were further evaluated by predicting the traction/braking and cornering tire forces against Tire Test Consortium (TTC) data from the Calspan flat-track test facility. The emphasis was put on modeling techniques for the transient response due to the lack of available test data. The in-plane and out-of-plane performance of the Hoosier tire on the full-tire test data is used for model validation, not for "calibrating" the model. The agreement between model prediction and physical tests demonstrate the effectiveness of the proposed methodology. Advisors/Committee Members: West, Robert L. (committeechair), Ferris, John B. (committee member), Taheri, Saied (committee member), Batra, Romesh C. (committee member), Sandu, Corina (committee member).

Subjects/Keywords: Tire Mechanics; Vehicle Dynamics; Finite Element Method

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

APA (6^th Edition):

Li, Y. (2017). Effective Simplified Finite Element Tire Models for Vehicle Dynamics Simulation. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/97271

Chicago Manual of Style (16^th Edition):

Li, Yi. “Effective Simplified Finite Element Tire Models for Vehicle Dynamics Simulation.” 2017. Doctoral Dissertation, Virginia Tech. Accessed March 05, 2021. http://hdl.handle.net/10919/97271.

MLA Handbook (7^th Edition):

Li, Yi. “Effective Simplified Finite Element Tire Models for Vehicle Dynamics Simulation.” 2017. Web. 05 Mar 2021.

Vancouver:

Li Y. Effective Simplified Finite Element Tire Models for Vehicle Dynamics Simulation. [Internet] [Doctoral dissertation]. Virginia Tech; 2017. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10919/97271.

Council of Science Editors:

Li Y. Effective Simplified Finite Element Tire Models for Vehicle Dynamics Simulation. [Doctoral Dissertation]. Virginia Tech; 2017. Available from: http://hdl.handle.net/10919/97271

University of Cambridge

25. Braghieri, Giovanni. Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver.

Degree: PhD, 2018, University of Cambridge

URL: https://doi.org/10.17863/CAM.22761 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744801

► The work undertaken in this research aims to develop a mathematical model which can replicate the behaviour of a racing driver controlling a vehicle at… (more)

Subjects/Keywords: 629.8; driver modelling; vehicle dynamics; MPC control

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

APA (6^th Edition):

Braghieri, G. (2018). Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.22761 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744801

Chicago Manual of Style (16^th Edition):

Braghieri, Giovanni. “Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver.” 2018. Doctoral Dissertation, University of Cambridge. Accessed March 05, 2021. https://doi.org/10.17863/CAM.22761 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744801.

MLA Handbook (7^th Edition):

Braghieri, Giovanni. “Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver.” 2018. Web. 05 Mar 2021.

Vancouver:

Braghieri G. Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver. [Internet] [Doctoral dissertation]. University of Cambridge; 2018. [cited 2021 Mar 05]. Available from: https://doi.org/10.17863/CAM.22761 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744801.

Council of Science Editors:

Braghieri G. Application of robust nonlinear model predictive control to simulating the control behaviour of a racing driver. [Doctoral Dissertation]. University of Cambridge; 2018. Available from: https://doi.org/10.17863/CAM.22761 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.744801

University of Wollongong

26. Li, Boyuan. State Estimation and Dynamic Control Allocation for Over-actuated Electric Vehicles with In-wheel Motors.

Degree: PhD, 2016, University of Wollongong

URL: 0913 MECHANICAL ENGINEERING, 0906 ELECTRICAL AND ELECTRONIC ENGINEERING ; https://ro.uow.edu.au/theses/4902

► The electrification of road vehicles is an attractive research area, as problems associated with greenhouse gas emission are now a global challenge. Particularly, electric… (more)

Subjects/Keywords: vehicle dynamics; state estimation; electric vehicle; control allocation

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APA (6^th Edition):

Li, B. (2016). State Estimation and Dynamic Control Allocation for Over-actuated Electric Vehicles with In-wheel Motors. (Doctoral Dissertation). University of Wollongong. Retrieved from 0913 MECHANICAL ENGINEERING, 0906 ELECTRICAL AND ELECTRONIC ENGINEERING ; https://ro.uow.edu.au/theses/4902

Chicago Manual of Style (16^th Edition):

Li, Boyuan. “State Estimation and Dynamic Control Allocation for Over-actuated Electric Vehicles with In-wheel Motors.” 2016. Doctoral Dissertation, University of Wollongong. Accessed March 05, 2021. 0913 MECHANICAL ENGINEERING, 0906 ELECTRICAL AND ELECTRONIC ENGINEERING ; https://ro.uow.edu.au/theses/4902.

MLA Handbook (7^th Edition):

Li, Boyuan. “State Estimation and Dynamic Control Allocation for Over-actuated Electric Vehicles with In-wheel Motors.” 2016. Web. 05 Mar 2021.

Vancouver:

Li B. State Estimation and Dynamic Control Allocation for Over-actuated Electric Vehicles with In-wheel Motors. [Internet] [Doctoral dissertation]. University of Wollongong; 2016. [cited 2021 Mar 05]. Available from: 0913 MECHANICAL ENGINEERING, 0906 ELECTRICAL AND ELECTRONIC ENGINEERING ; https://ro.uow.edu.au/theses/4902.

Council of Science Editors:

Li B. State Estimation and Dynamic Control Allocation for Over-actuated Electric Vehicles with In-wheel Motors. [Doctoral Dissertation]. University of Wollongong; 2016. Available from: 0913 MECHANICAL ENGINEERING, 0906 ELECTRICAL AND ELECTRONIC ENGINEERING ; https://ro.uow.edu.au/theses/4902

Universidade do Rio Grande do Sul

27. Mezacasa, Nathan. Metodologia para simulação dinâmica e otimização de veículos de esteira.

Degree: 2018, Universidade do Rio Grande do Sul

URL: http://hdl.handle.net/10183/179570

►

Devido as severas condições as quais veículos militares blindados de esteira são submetidos, o desenvolvimento de modelos que representam o comportamento dinâmico destes veículos torna-se… (more)

▼

Devido as severas condições as quais veículos militares blindados de esteira são submetidos, o desenvolvimento de modelos que representam o comportamento dinâmico destes veículos torna-se imprescindível, para além da possibilidade de avaliação das intensidades das vibrações ocorrendo na cabine, ser possível criar veículos que tenham vantagens na mobilidade, fator esse que engloba tanto a transposição de obstáculos, como a rodagem em condições menos severas, e por fim, no tempo e na exatidão dos disparos, afetada pelas respostas dinâmicas que o veículo fornece. Para ser possível encontrar um veículo que desempenhe tais condições de forma satisfatória, apenas modelos que representem adequadamente as suas propriedades, apresentando respostas das acelerações e deslocamentos, não são suficientes. O objetivo deste trabalho é o desenvolvimento de um modelo numérico que tenha a capacidade de simular as condições dinâmicas extremas as quais um veículo de esteira é induzido, e também, otimizar o modelo, com a finalidade de encontrar molas e amortecedores capazes de proporcionar respostas adequadas às funções custo desenvolvidas. Estas funções objetivo são definidas como a combinação linear da aceleração e deslocamento, verticais e rotacionais, em conjunto de restrições impostas, objetivando encontrar uma combinação ideal para mobilidade, tempo e exatidão nos disparos e por fim, molas e amortecedores adequados as condições de logística Para proposta deste estudo, um modelo matemático 2D e um 3D, de um veículo de esteira, foi desenvolvido. O modelo possibilita a avaliação dos graus de liberdade de deslocamento vertical das massas não suspensas e do deslocamento vertical, arfagem e rolagem da massa suspensa. Os efeitos da esteira são modelados como molas verticais lineares exercendo uma força de restauração para alinhar as rodas de rodagem, proporcional ao deslocamento relativo entre essas rodas. A otimização é feita através de ferramentas numéricas presentes no software comercial Simulink, sendo necessário o desenvolvimento das funções custo que caracterizem os objetivos ideais para cada tipo de análise. Os resultados de simulações numéricas sob a forma de cursos de deslocamento de pontos característicos do casco e deslocamentos dos eixos de rodas em um sistema de coordenadas de referência assumido, também estão incluídos, bem como as quantidades de valor RMS de cada uma das respostas, comparando um veículo padrão, com o veículo com a suspensão otimizada.

Due to the severe conditions in which armored military vehicles are submitted, the development of models that represent the dynamic behavior of these vehicles becomes essential, besides the possibility of evaluating the vibration intensities occurring in the cabin, to be possible to create vehicles that have mobility a factor that encompasses both the transposition of obstacles, and the shooting in less severe conditions, and finally, in the time and accuracy of the shots, affected by the dynamic responses that the vehicle provides. In order to be able to find a vehicle…

Advisors/Committee Members: Marczak, Rogerio Jose.

Subjects/Keywords: Vehicle dynamics; Veículos militares; Simulação numérica; Multibody systems; Optimization; Tracked vehicle

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APA (6^th Edition):

Mezacasa, N. (2018). Metodologia para simulação dinâmica e otimização de veículos de esteira. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/179570

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

Chicago Manual of Style (16^th Edition):

Mezacasa, Nathan. “Metodologia para simulação dinâmica e otimização de veículos de esteira.” 2018. Thesis, Universidade do Rio Grande do Sul. Accessed March 05, 2021. http://hdl.handle.net/10183/179570.

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

MLA Handbook (7^th Edition):

Mezacasa, Nathan. “Metodologia para simulação dinâmica e otimização de veículos de esteira.” 2018. Web. 05 Mar 2021.

Vancouver:

Mezacasa N. Metodologia para simulação dinâmica e otimização de veículos de esteira. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10183/179570.

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

Council of Science Editors:

Mezacasa N. Metodologia para simulação dinâmica e otimização de veículos de esteira. [Thesis]. Universidade do Rio Grande do Sul; 2018. Available from: http://hdl.handle.net/10183/179570

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

Bucknell University

28. Boyd, Christina Elyse. Vehicle Stabilization during Critical Cornering Scenarios Using Sliding Surface Control.

Degree: 2017, Bucknell University

URL: https://digitalcommons.bucknell.edu/masters_theses/184

► While effective in improving handling and passenger safety, current vehicle control systems are generally limited to braking or steering control. This project presents an approach… (more)

Subjects/Keywords: vehicle dynamics; sliding surface control; vehicle control; critical cornering maneuvers

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

APA (6^th Edition):

Boyd, C. E. (2017). Vehicle Stabilization during Critical Cornering Scenarios Using Sliding Surface Control. (Thesis). Bucknell University. Retrieved from https://digitalcommons.bucknell.edu/masters_theses/184

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

Chicago Manual of Style (16^th Edition):

Boyd, Christina Elyse. “Vehicle Stabilization during Critical Cornering Scenarios Using Sliding Surface Control.” 2017. Thesis, Bucknell University. Accessed March 05, 2021. https://digitalcommons.bucknell.edu/masters_theses/184.

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

MLA Handbook (7^th Edition):

Boyd, Christina Elyse. “Vehicle Stabilization during Critical Cornering Scenarios Using Sliding Surface Control.” 2017. Web. 05 Mar 2021.

Vancouver:

Boyd CE. Vehicle Stabilization during Critical Cornering Scenarios Using Sliding Surface Control. [Internet] [Thesis]. Bucknell University; 2017. [cited 2021 Mar 05]. Available from: https://digitalcommons.bucknell.edu/masters_theses/184.

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

Council of Science Editors:

Boyd CE. Vehicle Stabilization during Critical Cornering Scenarios Using Sliding Surface Control. [Thesis]. Bucknell University; 2017. Available from: https://digitalcommons.bucknell.edu/masters_theses/184

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

Université Catholique de Louvain

29. Docquier, Quentin. Dynamic analysis and control of narrow track vehicles via a multibody modeling approach.

Degree: 2020, Université Catholique de Louvain

URL: http://hdl.handle.net/2078.1/227672

►

Traffic congestion is a growing issue all over the world especially in urban areas for which the possibilities of road infrastructure extension are already limited.… (more)

▼

Traffic congestion is a growing issue all over the world especially in urban areas for which the possibilities of road infrastructure extension are already limited. This observation has recently led to an increasing interest in the development of narrow tilting vehicles (NTV) which could seat one to two people in tandem. Generally featuring more than two wheels and an additional tilting degree of freedom along their longitudinal axis, these vehicles can be steered and tilted into a curve throughout two different approaches. For the first mode, a steering action is used to drive and balance the vehicle which is free to roll. The second mode consists in forcing the vehicle to tilt through a direct action on the additional tilt rotation while the steerable wheels are left free to caster. The main goal of this thesis is to compare the different tilting modes in a systematic way and via an accurate modeling of the NTV tridimensional dynamics. With the help of a multibody model of a reference NTV, the dynamics of the two passive modes is analyzed, quantified and compared based on steady-state equilibria, modal analyses and step response simulations. If the steering action shows itself more energy-efficient, the direct tilting mode with free-to-caster wheels leads to a monotonic dynamic response, a more upright position and a centrifugal feeling which are better in terms of driving experience. In addition, the applicability of several nonlinear control methods to different active tilting modes is investigated. In this respect, the advanced control methods are implemented within an existing multibody modeling framework. This work demonstrates that feedback linearization leads to a very accurate tracking of the vehicle roll angle, especially for the single-input tilting modes. Eventually, it is shown that model predictive control enables the yaw rate tracking and the combination of steering and tilting action for NTVs.

(FSA - Sciences de l'ingénieur) – UCL, 2020

Advisors/Committee Members: UCL - SST/IMMC/MEED - Mechatronic, Electrical Energy, and Dynamics Systems, UCL - Ecole Polytechnique de Louvain, Fisette, Paul, Delannay, Laurent, Brüls, Olivier, Schwab, Arend, Hendrickx, Julien.

Subjects/Keywords: Three-wheeler; Narrow track vehicle; Nonlinear control; Vehicle dynamics; Multibody system

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

APA (6^th Edition):

Docquier, Q. (2020). Dynamic analysis and control of narrow track vehicles via a multibody modeling approach. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/227672

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

Chicago Manual of Style (16^th Edition):

Docquier, Quentin. “Dynamic analysis and control of narrow track vehicles via a multibody modeling approach.” 2020. Thesis, Université Catholique de Louvain. Accessed March 05, 2021. http://hdl.handle.net/2078.1/227672.

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

MLA Handbook (7^th Edition):

Docquier, Quentin. “Dynamic analysis and control of narrow track vehicles via a multibody modeling approach.” 2020. Web. 05 Mar 2021.

Vancouver:

Docquier Q. Dynamic analysis and control of narrow track vehicles via a multibody modeling approach. [Internet] [Thesis]. Université Catholique de Louvain; 2020. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2078.1/227672.

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

Council of Science Editors:

Docquier Q. Dynamic analysis and control of narrow track vehicles via a multibody modeling approach. [Thesis]. Université Catholique de Louvain; 2020. Available from: http://hdl.handle.net/2078.1/227672

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

University of Ontario Institute of Technology

30. Russell, Brett. Development and analysis of active rear axle steering for 8x8 combat vehicle.

Degree: 2018, University of Ontario Institute of Technology

URL: http://hdl.handle.net/10155/944

► This thesis proposes and compares multiple vehicle dynamics controllers using rear axle steering of an 8x8 combat vehicle. The controllers are assessed on ability to… (more)

▼ This thesis proposes and compares multiple vehicle dynamics controllers using rear axle steering of an 8x8 combat vehicle. The controllers are assessed on ability to increase maneuverability at low speed, increase stability at higher speeds, avoiding rollover and ability to dampen the effects of external disturbances. The two controllers that are proposed to improve the lateral vehicle dynamics include a feed-forward Zero Side Slip (ZSS) controller which steers the rear axle based on the vehicle speed, and a Linear Quadratic Regulator (LQR) controller that monitors the steering angle and compares the vehicle yaw rate and sideslip angle to the desired values calculated at steady state. These controllers are evaluated by performing simulations using a previously validated 8x8 combat vehicle as a TruckSim?? full vehicle model. The controllers are developed in MATLAB/Simulink and are applied in co-simulation with TruckSim??. The simulation events to evaluate the controller performance include a 15-meter constant step slalom, modified J-turn, FMVSS 126 ESC and NATO double lane-change. These simulations are performed in between 20 km/h and 80 km/h over low friction (?? =0.35) and high friction (??=0.85) surfaces. The rollover prevention capabilities of the controllers are evaluated using a fishhook maneuver over a high friction surface and damping of external disturbances will be tested using a crosswind simulation. The ZSS controller is a very responsive controller that increases the maneuverability at low speed and increases the stability at higher speeds. The responsiveness results in oversteering at mid range speeds and low lateral displacement during FMVSS 126 ESC. The LQR controller, as designed, is not applicable to improve low speed maneuverability but improves the lateral stability at high speed while achieving a respectable lateral displacement during the FMVSS 126 ESC maneuver. Both the ZSS and LQR controllers reduce the lateral accelerations at high speeds. The LQR controller also dampens the external disturbances applied during a cross wind simulation. Advisors/Committee Members: El-Gindy, Moustafa.

Subjects/Keywords: Vehicle dynamics; Linear Quadratic Regulator; Combat vehicle; Rear axle steering

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

APA (6^th Edition):

Russell, B. (2018). Development and analysis of active rear axle steering for 8x8 combat vehicle. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/944

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

Chicago Manual of Style (16^th Edition):

Russell, Brett. “Development and analysis of active rear axle steering for 8x8 combat vehicle.” 2018. Thesis, University of Ontario Institute of Technology. Accessed March 05, 2021. http://hdl.handle.net/10155/944.

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

MLA Handbook (7^th Edition):

Russell, Brett. “Development and analysis of active rear axle steering for 8x8 combat vehicle.” 2018. Web. 05 Mar 2021.

Vancouver:

Russell B. Development and analysis of active rear axle steering for 8x8 combat vehicle. [Internet] [Thesis]. University of Ontario Institute of Technology; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10155/944.

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

Council of Science Editors:

Russell B. Development and analysis of active rear axle steering for 8x8 combat vehicle. [Thesis]. University of Ontario Institute of Technology; 2018. Available from: http://hdl.handle.net/10155/944

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

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Open Access Theses and Dissertations