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Brake Based Integrated Rollover Prevention And Yaw Control For An Off Road Vehicle
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Book Synopsis Brake Based Integrated Rollover Prevention and Yaw Control for an Off-road Vehicle by : Rénier Strauss
Download or read book Brake Based Integrated Rollover Prevention and Yaw Control for an Off-road Vehicle written by Rénier Strauss and published by . This book was released on 2016 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sport utility vehicles typically feature high ground clearances that allow them to be used in off-road conditions. Their use is not limited to off-road conditions and they are often used as day-to-day family vehicles. On the road, where high friction surfaces are prevalent, their high centres of gravity can make them susceptible to un-tripped rollovers during severe dynamic manoeuvers such as an emergency obstacle avoidance. The detection of a high risk of rollover and the avoidance thereof has great potential to improve vehicle safety, as the consequences of rollover incidents are generally quite severe. Rollover mitigation systems are triggered when a rollover threshold index is exceeded, indicating a high risk of rollover. The metric implemented in this study is known as the zero-moment point method, which allows for vehicle parameters and terrain to be taken into account. Previous research has indicated that mitigation systems that trigger braking intervention are some of the most successful methods in reducing rollover risk, as it not only stabilises the vehicle, but also reduces the speed. Brake based rollover prevention systems typically implement electronic stability program methods that use yaw rate reduction as the primary tool for reducing rollover risk, which often comes at the expense of the vehicle's path following ability. This means that the stability control system may lead to the vehicle leaving the road and causing an even more severe accident. The control algorithm implemented in this study gives preference to reducing the forward speed of the vehicle which in turn reduces lateral acceleration, a major contributor to rollover propensity. Braking is however apportioned to all four wheels and distributed so as to achieve vehicle yaw rate targets. Emphasis is placed on maintaining good path following capability to prevent the vehicle from leaving the road. The detection and mitigation system was tested on a Land Rover Defender 110 for a variety of manoeuvers in simulation as well as experimental testing. The results indicate that the rollover mitigation system managed to successfully reduce the rollover threshold index of the vehicle during the manoeuver whilst simultaneously maintaining the path following ability of the vehicle and improved the yaw rate tracking.
Book Synopsis Integrated Brake Based Torque Vectoring Control of Vehicle Yaw Rate and Side-slip Angle by : Karthik Poovendran
Download or read book Integrated Brake Based Torque Vectoring Control of Vehicle Yaw Rate and Side-slip Angle written by Karthik Poovendran and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sport Utility Vehicle (SUV) sales are increasing globally, even surpassing sedan vehicle sales worldwide. Their increasing popularity is termed a continuous trend that is expected to last. SUVs are known to offer a higher ground clearance which makes them more susceptible to rollover and directional instability during emergency manoeuvres. This dissertation proposes an integrated controller which controls two vehicle states, namely yaw-rate and side-slip angle to improve handling while reducing rollover propensity and improving rollover stability. The control system employs brake based torque vectoring to control the vehicle states, torque vectoring control improves lateral stability by maintaining consistent handling characteristics over all driving conditions and the lateral stability is maintained whilst adhering to a rollover index. The desired vehicle states are obtained from a reference linear two degree of freedom model with tyre characteristics obtained from the linear region of the tyre. A coordinated control strategy is investigated with respect to Direct Yaw Moment Control (DYC) acting on a vehicle through individual brake torques. Two types of controllers are investigated, namely a Linear Quadratic Regulator (LQR) and a Linear Model Predictive Controller (LMPC). It is shown that yaw rate control together with side-slip angle control and the inclusion of a roll index limit allows for better vehicle handling. Simulation tests are done using Simulink/ADAMS and verified experimentally with a SUV undergoing evasive manoeuvres where the vehicle is near its performance limit. The vehicle managed to be successfully navigated through manoeuvres not possible prior to yaw rate and side-slip angle control, with a notable decrease in the vehicle roll.
Book Synopsis Dynamic Stability and Control of Tripped and Untripped Vehicle Rollover by : Zhilin Jin
Download or read book Dynamic Stability and Control of Tripped and Untripped Vehicle Rollover written by Zhilin Jin and published by Springer Nature. This book was released on 2022-06-01 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vehicle rollover accidents have been a serious safety problem for the last three decades. Although rollovers are a small percentage of all traffic accidents, they do account for a large proportion of severe and fatal injuries. Specifically, some large passenger vehicles, such as large vans, pickup trucks, and sport utility vehicles, are more prone to rollover accidents with a high center of gravity (CG) and narrow track width. Vehicle rollover accidents may be grouped into two categories: tripped and untripped rollovers. A tripped rollover commonly occurs when a vehicle skids and digs its tires into soft soil or hits a tripping mechanism such as a curb with a sufficiently large lateral velocity. On the other hand, the untripped rollover is induced by extreme maneuvers during critical driving situations, such as excessive speed during cornering, obstacle avoidance, and severe lane change maneuver. In these situations, the forces at the tire-road contact point are large enough to cause the vehicle to roll over. Furthermore, vehicle rollover may occur due to external disturbances such as side-wind and steering excitation. Therefore, it is necessary to investigate the dynamic stability and control of tripped and untripped vehicle rollover so as to avoid vehicle rollover accidents. In this book, different dynamic models are used to describe the vehicle rollover under both untripped and special tripped situations. From the vehicle dynamics theory, rollover indices are deduced, and the dynamic stabilities of vehicle rollover are analyzed. In addition, some active control strategies are discussed to improve the anti-rollover performance of the vehicle.
Book Synopsis Investigation of Heavy Duty Vehicle on Rollover Propensity and Prevention by : Yongjie Zhu
Download or read book Investigation of Heavy Duty Vehicle on Rollover Propensity and Prevention written by Yongjie Zhu and published by . This book was released on 2007 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: To prevent rollover accident and reduce the loss on highway traffic, the Center for Automotive Research and Intelligent Transportation of The Ohio State University conducted research programs to study rollover prediction and prevention. This thesis is partial work of this project. In this thesis, on-road and untripped heavy duty vehicle rollover propensity is studied under characterization maneuvers. A heavy duty truck, the combination of a tractor and a semi-trailer, is used as an example for analysis. Both the complex nonlinear model and its simple version are given for a typical heavy duty truck and ION, the off-road navigator from OSU team in Darpa Grand Challenge, and unknown parameters in the linear model are found by system identification using data from TruckSim. Characteristic parameters for the ION model are tuned to match a real situation in which one wheel lift-off happened. An integration of two prevailing anti- rollover control methods, namely active suspension control and differential braking, is applied on the model of ION for rollover prevention. Simulations are given to show the advantage of the integrating control method compared with each separate controller. The influences of the road curvature, or the steering input and the travel speed on rollover propensity are analyzed and compared for these two vehicles. The results show that vehicle roll dynamic can be predicted to match that of a real driving case and the proposed control method effectively improves the roll stability both for ION and the heavy truck.
Book Synopsis State Estimation and Coordinated Control for Distributed Electric Vehicles by : Wenbo Chu
Download or read book State Estimation and Coordinated Control for Distributed Electric Vehicles written by Wenbo Chu and published by Springer. This book was released on 2015-10-26 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book tackles some of the most challenging problems in state estimation and traction coordinated control systems to improve the dynamic control performance of Distributed Electric Vehicles. The developed methods make it possible to gain more accurate information regarding the vehicle states, ensure more desirable vehicle motions and better robustness in unforeseeable driving environments. Given the impressive features of Distributed Electric Vehicles, including their simple and compact structure, short transmission chains, fast and accurate control response, modular drivetrain design etc., it is widely recognized that they represent an important future development direction and attract many of the brightest engineers and scientists. This book makes a significant contribution to the design of safer and more efficient vehicles.
Book Synopsis Proceedings of the 20th Symposium of the International Association for Vehicle System Dynamics by : International Association for Vehicle System Dynamics
Download or read book Proceedings of the 20th Symposium of the International Association for Vehicle System Dynamics written by International Association for Vehicle System Dynamics and published by . This book was released on 2008 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exploring Yaw and Roll Dynamics of Ground Vehicles Using TS Fuzzy Approach and a Novel Method for Stability Analysis Based on Lyapunov Exponents by : Ali Reza Armiyoon
Download or read book Exploring Yaw and Roll Dynamics of Ground Vehicles Using TS Fuzzy Approach and a Novel Method for Stability Analysis Based on Lyapunov Exponents written by Ali Reza Armiyoon and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Towards Intelligent Engineering and Information Technology by : Imre J. Rudas
Download or read book Towards Intelligent Engineering and Information Technology written by Imre J. Rudas and published by Springer Science & Business Media. This book was released on 2009-08-18 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the state of the art of computational intelligence ion engineering. It offers challenging problems for efficient modeling of intelligent systems and details different methodologies of computational intelligence with real life applications.
Book Synopsis 10th International Munich Chassis Symposium 2019 by : Peter E. Pfeffer
Download or read book 10th International Munich Chassis Symposium 2019 written by Peter E. Pfeffer and published by Springer Nature. This book was released on 2019-11-01 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing automation of driving functions and the electrification of powertrains present new challenges for the chassis with regard to complexity, redundancy, data security,and installation space. At the same time, the mobility of the future will also require entirely new vehicle concepts, particularly in urban areas. The intelligent chassis must be connected, electrified, and automated in order to be best prepared for this future.
Book Synopsis Predictive Control for Linear and Hybrid Systems by : Francesco Borrelli
Download or read book Predictive Control for Linear and Hybrid Systems written by Francesco Borrelli and published by Cambridge University Press. This book was released on 2017-06-22 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a simple approach that includes real-time applications and algorithms, this book covers the theory of model predictive control (MPC).
Book Synopsis Review of the 21st Century Truck Partnership, Second Report by : National Research Council
Download or read book Review of the 21st Century Truck Partnership, Second Report written by National Research Council and published by National Academies Press. This book was released on 2012-07-04 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: In July 2010, the National Research Council (NRC) appointed the Committee to Review the 21st Century Truck Partnership, Phase 2, to conduct an independent review of the 21st Century Truck Partnership (21CTP). The 21CTP is a cooperative research and development (R&D) partnership including four federal agencies-the U.S. Department of Energy (DOE), U.S. Department of Transportation (DOT), U.S. Department of Defense (DOD), and the U.S. Environmental Protection Agency (EPA)-and 15 industrial partners. The purpose of this Partnership is to reduce fuel consumption and emissions, increase heavy-duty vehicle safety, and support research, development, and demonstration to initiate commercially viable products and systems. This is the NRC's second report on the topic and it includes the committee's review of the Partnership as a whole, its major areas of focus, 21CTP's management and priority setting, efficient operations, and the new SuperTruck program.
Book Synopsis Vehicle Dynamics and Control by : Shahram Azadi
Download or read book Vehicle Dynamics and Control written by Shahram Azadi and published by Elsevier. This book was released on 2021-03-25 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vehicle Dynamics and Control: Advanced Methodologies features the latest information on advanced dynamics and vehicle motion control, including a comprehensive overview of passenger cars and articulated vehicles, fundamentals, and emerging developments. This book provides a unified, balanced treatment of advanced approaches to vehicle dynamics and control. It proceeds to cover advanced vehicle control strategies, such as identification and estimation, adaptive nonlinear control, new robust control techniques, and soft computing. Other topics, such as the integrated control of passenger cars and articulated heavy vehicles, are also discussed with a significant amount of material on engineering methodology, simulation, modeling, and mathematical verification of the systems. This book discusses and solves new challenges in vehicle dynamics and control problems and helps graduate students in the field of automotive engineering as well as researchers and engineers seeking theoretical/practical design procedures in automotive control systems. Provides a vast spectrum of advanced vehicle dynamics and control systems topics and current research trends Provides an extensive discussion in some advanced topics on commercial vehicles, such as dynamics and control of semitrailer carrying liquid, integrated control system design, path planning and tracking control in the autonomous articulated vehicle
Book Synopsis Handbook of Driver Assistance Systems by : Hermann Winner
Download or read book Handbook of Driver Assistance Systems written by Hermann Winner and published by Springer. This book was released on 2015-10-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fundamental work explains in detail systems for active safety and driver assistance, considering both their structure and their function. These include the well-known standard systems such as Anti-lock braking system (ABS), Electronic Stability Control (ESC) or Adaptive Cruise Control (ACC). But it includes also new systems for protecting collisions protection, for changing the lane, or for convenient parking. The book aims at giving a complete picture focusing on the entire system. First, it describes the components which are necessary for assistance systems, such as sensors, actuators, mechatronic subsystems, and control elements. Then, it explains key features for the user-friendly design of human-machine interfaces between driver and assistance system. Finally, important characteristic features of driver assistance systems for particular vehicles are presented: Systems for commercial vehicles and motorcycles.
Book Synopsis The Control Handbook by : William S. Levine
Download or read book The Control Handbook written by William S. Levine and published by CRC Press. This book was released on 2018-10-08 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: At publication, The Control Handbook immediately became the definitive resource that engineers working with modern control systems required. Among its many accolades, that first edition was cited by the AAP as the Best Engineering Handbook of 1996. Now, 15 years later, William Levine has once again compiled the most comprehensive and authoritative resource on control engineering. He has fully reorganized the text to reflect the technical advances achieved since the last edition and has expanded its contents to include the multidisciplinary perspective that is making control engineering a critical component in so many fields. Now expanded from one to three volumes, The Control Handbook, Second Edition organizes cutting-edge contributions from more than 200 leading experts. The second volume, Control System Applications, includes 35 entirely new applications organized by subject area. Covering the design and use of control systems, this volume includes applications for: Automobiles, including PEM fuel cells Aerospace Industrial control of machines and processes Biomedical uses, including robotic surgery and drug discovery and development Electronics and communication networks Other applications are included in a section that reflects the multidisciplinary nature of control system work. These include applications for the construction of financial portfolios, earthquake response control for civil structures, quantum estimation and control, and the modeling and control of air conditioning and refrigeration systems. As with the first edition, the new edition not only stands as a record of accomplishment in control engineering but provides researchers with the means to make further advances. Progressively organized, the other two volumes in the set include: Control System Fundamentals Control System Advanced Methods
Book Synopsis Vehicle Dynamics and Control by : Rajesh Rajamani
Download or read book Vehicle Dynamics and Control written by Rajesh Rajamani and published by Springer Science & Business Media. This book was released on 2011-12-21 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vehicle Dynamics and Control provides a comprehensive coverage of vehicle control systems and the dynamic models used in the development of these control systems. The control system applications covered in the book include cruise control, adaptive cruise control, ABS, automated lane keeping, automated highway systems, yaw stability control, engine control, passive, active and semi-active suspensions, tire-road friction coefficient estimation, rollover prevention, and hybrid electric vehicles. In developing the dynamic model for each application, an effort is made to both keep the model simple enough for control system design but at the same time rich enough to capture the essential features of the dynamics. A special effort has been made to explain the several different tire models commonly used in literature and to interpret them physically. In the second edition of the book, chapters on roll dynamics, rollover prevention and hybrid electric vehicles have been added, and the chapter on electronic stability control has been enhanced. The use of feedback control systems on automobiles is growing rapidly. This book is intended to serve as a useful resource to researchers who work on the development of such control systems, both in the automotive industry and at universities. The book can also serve as a textbook for a graduate level course on Vehicle Dynamics and Control.
Book Synopsis The Dynamics of Vehicles on Roads and Tracks by : Martin Rosenberger
Download or read book The Dynamics of Vehicles on Roads and Tracks written by Martin Rosenberger and published by CRC Press. This book was released on 2016-03-30 with total page 1644 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IAVSD Symposium is the leading international conference in the field of ground vehicle dynamics, bringing together scientists and engineers from academia and industry. The biennial IAVSD symposia have been held in internationally renowned locations. In 2015 the 24th Symposium of the International Association for Vehicle System Dynamics (IAVSD)
Book Synopsis Annual Index/abstracts of SAE Technical Papers by :
Download or read book Annual Index/abstracts of SAE Technical Papers written by and published by . This book was released on 2007 with total page 1218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
