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Author : Anonim
Publisher : Unknown
Page : 95 pages
File Size : 44,5 Mb
Release : 2008
Category : Commercial vehicles
ISBN : 0768020921
Author : Daniel J Holt
Publisher : SAE International
Page : 697 pages
File Size : 54,5 Mb
Release : 2004-09-23
Category : Technology & Engineering
ISBN : 9780768096262
Automotive engineers have been working to improve vehicle safety ever since the first car rolleddown some pathway well over 100 years ago. Today, there are many new technologies being developedthat will improve the safety of future vehicles. Featuring the 69 best safety-related SAE technical papers of 2003, this book provides the most comprehensive information available on current and emerging developments in automotive safety. It gives readers a feel for the direction engineers are taking to reduce deaths and injuries of vehicle occupants as well as pedestrians. All of the papers selected for this book meet the criteria for inclusion in SAE Transactions--the definitive collection of the year's best technical research in automotive engineering technology.
Author : Wuwei Chen,Hansong Xiao,Qidong Wang,Linfeng Zhao,Maofei Zhu
Publisher : John Wiley & Sons
Page : 400 pages
File Size : 54,9 Mb
Release : 2016-03-31
Category : Technology & Engineering
ISBN : 9781118380017
A comprehensive overview of integrated vehicle systemdynamics exploring the fundamentals and new and emergingdevelopments This book provides a comprehensive coverage of vehicle systemdynamics and control, particularly in the area of integratedvehicle dynamics control. The book consists of two parts, (1)development of individual vehicle system dynamic model and controlmethodology; and (2) development of integrated vehicle dynamicmodel and control methodology. The first part focuses oninvestigating vehicle system dynamics and control according to thethree directions of vehicle motions, including longitudinal,vertical, and lateral. Corresponding individual control systems,e.g. Anti-lock Brake System (ABS), Active Suspension, ElectricPower Steering System (EPS), are introduced and developedrespectively. Particular attention is paid in the second part of the book todevelop integrated vehicle dynamic control system. Integratedvehicle dynamics control system is an advanced system thatcoordinates all the chassis control systems and components toimprove the overall vehicle performance including safety, comfort,and economy. Integrated vehicle dynamics control has been animportant research topic in the area of vehicle dynamics andcontrol over the past two decades. The research topic on integratedvehicle dynamics control is investigated comprehensively andintensively in the book through both theoretical analysis andexperimental study. In this part, two types of controlarchitectures, i.e. centralized and multi-layer, have beendeveloped and compared to demonstrate their advantages anddisadvantages. Integrated vehicle dynamics control is a hot topic inautomotive research; this is one of the few books to address boththeory and practice of integrated systems Comprehensively explores the research area of integratedvehicle dynamics and control through both theoretical analysis andexperimental study Addresses a full range of vehicle system topics including tyredynamics, chassis systems, control architecture, 4 wheel steeringsystem and design of control systems using Linear Matrix Inequality(LMI) Method
Author : Anonim
Publisher : Unknown
Page : 69 pages
File Size : 52,8 Mb
Release : 2007
Category : Commercial vehicles
ISBN : 0768019702
Author : Wanzhong Zhao,Chunyan Wang
Publisher : Springer Nature
Page : 248 pages
File Size : 42,6 Mb
Release : 2022-01-03
Category : Technology & Engineering
ISBN : 9789811673221
This book belongs to the field of intelligent vehicle control, which is dedicated to the research of nonlinear control problems of intelligent vehicle chassis-by-wire systems. Through the nonlinear stability control of the steer-by-wire system and the consistency optimization control of the brake-by-wire system, the performance of the vehicle subsystem is improved. Then, the decoupling control of the nonlinear inverse system is used to realize the decoupling of the chassis-by-wire system. Finally, this book further adopts nonlinear rollover prevention integrated control to improve the rollover prevention performance of the vehicle.
Author : Wanzhong Zhao
Publisher : Springer Nature
Page : 455 pages
File Size : 47,5 Mb
Release : 2022-09-24
Category : Technology & Engineering
ISBN : 9789811942501
This book focuses on the control-by-wire system, particularly the steer-by-wire system, as well as its control and optimization issues in chassis integration. The steering stability of the vehicle, handling portability, and overall performance of the chassis system are improved by steer-by-wire technology, which includes stability control, road-feeling control, decoupling control, force and displacement coordinated control, and chassis integration optimization. Furthermore, intelligent control goals such as active collision avoidance and active rollover prevention of the vehicle are realized, and the active safety of the vehicle is increased, due to the integrated control of the steer-by-wire system and chassis system. In this book, different types of steer-by-wire systems are introduced, as well as thorough force and displacement control strategies and their implementation in chassis integrated control, ensuring the intelligent and unmanned driving's control reaction speed and precision.
Author : Zhilin Jin,Bin Li,Jingxuan Li
Publisher : Morgan & Claypool Publishers
Page : 122 pages
File Size : 41,8 Mb
Release : 2019-05-30
Category : Technology & Engineering
ISBN : 9781681735610
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.
Author : Xiaodong Wu
Publisher : CRC Press
Page : 182 pages
File Size : 51,5 Mb
Release : 2024-06-04
Category : Technology & Engineering
ISBN : 9781040032350
Advanced Chassis Control Technology for Steer-by-Wire Vehicles details state-of-the-art drive-by-wire technology, enabling engineers to create safer and smarter steering technology. With applications in Formula 1 driving, this book is an accessible yet ambitious introduction to the technology that is fast becoming the future of road vehicles. Steer-by-wire systems replace conventional mechanical technology with electronic sensors, controllers, and actuators, enhancing functionality when steering. Features such as variable steer ratio, customized road feel, and advanced vehicle dynamics control all ensure that this maximizes safety when driving. The book looks first at the theory behind this technology and compares it to conventional mechanical steering. It discusses control through forward and backward dynamics and a shared steering control concept to improve vehicle handling and performance, relevant to intelligent vehicles. It also explains how to create chassis domain fusion control, four independent wheels steering system and teleoperated control. Using case studies and ISOs, the book is a practical guide to safely designing steer-by-wire systems. The book is an essential guide to all engineers working in the modern automotive industry.
Author : Ronald K. Jurgen
Publisher : SAE International
Page : 637 pages
File Size : 41,5 Mb
Release : 2006-01-01
Category : Automobiles
ISBN : 0768017866
Author : Rajesh Rajamani
Publisher : Springer Science & Business Media
Page : 498 pages
File Size : 44,7 Mb
Release : 2011-12-27
Category : Technology & Engineering
ISBN : 9781461414339
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.
Author : Anonim
Publisher : Unknown
Page : 256 pages
File Size : 47,7 Mb
Release : 2004
Category : Technology & Engineering
ISBN : UVA:X004806437
"SAE 2004 Automotive Dynamics & Stability and Controls Conference, Detroit, Michigan, USA, May 4-6, 2004"--P. [4] of cover.
Author : Jingsheng Yu,Vladimir Vantsevich
Publisher : CRC Press
Page : 368 pages
File Size : 49,7 Mb
Release : 2021-12-20
Category : Technology & Engineering
ISBN : 9781000441949
This book presents essential knowledge of car vehicle dynamics and control theory with NI LabVIEW software product application, resulting in a practical yet highly technical guide for designing advanced vehicle dynamics and vehicle system controllers. Presenting a clear overview of fundamental vehicle dynamics and vehicle system mathematical models, the book covers linear and non-linear design of model based controls such as wheel slip control, vehicle speed control, path following control, vehicle stability and rollover control, stabilization of vehicle-trailer system. Specific applications to autonomous vehicles are described among the methods. It details the practical applications of Kalman-Bucy filtering and the observer design for sensor signal estimation, alongside lateral vehicle dynamics and vehicle rollover dynamics. The book also discusses high level controllers, alongside a clear explanation of basic control principles for regenerative braking in both electric and hybrid vehicles, and wheel torque vectoring systems. Concrete LabVIEW simulation examples of how the models and controls are used in representative applications, along with software algorithms and LabVIEW block diagrams are illustrated. It will be of interest to engineering students, automotive engineering students and automotive engineers and researchers.
Author : Craig Earl Beal
Publisher : Stanford University
Page : 161 pages
File Size : 50,9 Mb
Release : 2011
Category : Electronic
ISBN : STANFORD:rv794bn8004
Each year in the United States, thousands of lives are lost as a result of loss of control crashes. Production driver assistance systems such as electronic stability control (ESC) have been shown to be highly effective in preventing many of these automotive crashes, yet these systems rely on a sensor suite that yields limited information about the road conditions and vehicle motion. Furthermore, ESC systems rely on gains and thresholds that are tuned to yield good performance without feeling overly restrictive to the driver. This dissertation presents an alternative approach to providing stabilization assistance to the driver which leverages additional information about the vehicle and road that may be obtained with advanced estimation techniques. This new approach is based on well-known and robust vehicle models and utilizes phase plane analysis techniques to describe the limits of stable vehicle handling, alleviating the need for hand tuning of gains and thresholds. The resulting state space within the computed handling boundaries is referred to as a safe handling envelope. In addition to the boundaries being straightforward to calculate, this approach has the benefit of offering a way for the designer of the system to directly adjust the controller to accomodate the preferences of different drivers. A model predictive control structure capable of keeping the vehicle within the safe handling boundaries is the final component of the envelope control system. This dissertation presents the design of a controller that is capable of smoothly and progressively augmenting the driver steering input to enforce the boundaries of the envelope. The model predictive control formulation provides a method for making trade-offs between enforcing the boundaries of the envelope, minimizing disruptive interventions, and tracking the driver's intended trajectory. Experiments with a steer-by-wire test vehicle demonstrate that the model predictive envelope control system is capable of operating in conjunction with a human driver to prevent loss of control of the vehicle while yielding a predictable vehicle trajectory. These experiments considered both the ideal case of state information from a GPS/INS system and an a priori friction estimate as well as a real-world implementation estimating the vehicle states and friction coefficient from steering effort and inertial sensors. Results from the experiments demonstrated a controller that is tolerant of vehicle and tire parameterization errors and works well over a wide range of conditions. When real time sensing of the states and friction properties is enabled, the results show that coupling of the controller and estimator is possible and the model predictive control structure provides a mechanism for minimizing undesirable coupled dynamics through tuning of intuitive controller parameters. The model predictive control structure presented in this dissertation may also be considered as a general framework for vehicle control in conjunction with a human driver. The structure utilized for envelope control may also be used to restrict other vehicle states for safety and stability. Results are presented in this dissertation to show that a model predictive controller can coordinate a secondary actuator to alter the planar states and reduce the energy transferred into the roll modes of the vehicle. The systematic approach to vehicle stabilization presented in this dissertation has the potential to improve the design methodology for future systems and form the basis for the inclusion of more advanced functions as sensing and computing capabilities improve. The envelope control system presented here offers the opportunity to advance the state of the art in stabilization assistance and provides a way to help drivers of all skill levels maintain control of their vehicle.
Author : Victor Fors
Publisher : Linköping University Electronic Press
Page : 19 pages
File Size : 48,6 Mb
Release : 2019-05-02
Category : Electronic
ISBN : 9789176853016
The trend of more advanced driver-assistance features and the development toward autonomous vehicles enable new possibilities in the area of active safety. With more information available in the vehicle about the surrounding traffic and the road ahead, there is the possibility of improved active-safety systems that make use of this information for stability control in safety-critical maneuvers. Such a system could adaptively make a trade-off between controlling the longitudinal, lateral, and rotational dynamics of the vehicle in such a way that the risk of collision is minimized. To support this development, the main aim of this licentiate thesis is to provide new insights into the optimal behavior for autonomous vehicles in safety-critical situations. The knowledge gained have the potential to be used in future vehicle control systems, which can perform maneuvers at-the-limit of vehicle capabilities. Stability control of a vehicle in autonomous safety-critical at-the-limit maneuvers is analyzed by the use of optimal control. Since analytical solutions of the studied optimal control problems are intractable, they are discretized and solved numerically. A formulation of an optimization criterion depending on a single interpolation parameter is introduced, which results in a continuous family of optimal coordinated steering and braking patterns. This formulation provides several new insights into the relation between different braking patterns for vehicles in at-the-limit maneuvers. The braking patterns bridge the gap between optimal lane-keeping control and optimal yaw control, and have the potential to be used for future active-safety systems that can adapt the level of braking to the situation at hand. A new illustration named attainable force volumes is introduced, which effectively shows how the trajectory of a vehicle maneuver relates to the attainable forces over the duration of the maneuver. It is shown that the optimal behavior develops on the boundary surface of the attainable force volume. Applied to lane-keeping control, this indicates a set of control principles similar to those analytically obtained for friction-limited particle models in earlier research, but is shown to result in vehicle behavior close to the globally optimal solution also for more complex models and scenarios.
Author : Sergio M. Savaresi,Mara Tanelli
Publisher : Springer Science & Business Media
Page : 254 pages
File Size : 48,8 Mb
Release : 2010-09-24
Category : Technology & Engineering
ISBN : 9781849963503
Active Braking Control Design for Road Vehicles focuses on two main brake system technologies: hydraulically-activated brakes with on–off dynamics and electromechanical brakes, tailored to brake-by-wire control. The physical differences of such actuators enjoin the use of different control schemes so as to be able fully to exploit their characteristics. The authors show how these different control approaches are complementary, each having specific peculiarities in terms of either performance or of the structural properties of the closed-loop system. They also consider other problems related to the design of braking control systems, namely: • longitudinal vehicle speed estimation and its relationship with braking control system design; • tire–road friction estimation; • direct estimation of tire–road contact forces via in-tire sensors, providing a treatment of active vehicle braking control from a wider perspective linked to both advanced academic research and industrial reality.