Search results for: vehicle-dynamics-stability-and-control

Vehicle Dynamics Stability and Control Second Edition

Author : Dean Karnopp
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Anyone who has experience with a car, bicycle, motorcycle, or train knows that the dynamic behavior of different types of vehicles and even different vehicles of the same class varies significantly. For example, stability (or instability) is one of the most intriguing and mysterious aspects of vehicle dynamics. Why do some motorcycles sometimes exhibit a wobble of the front wheel when ridden "no hands" or a dangerous weaving motion at high speed? Why does a trailer suddenly begin to oscillate over several traffic lanes just because its load distribution is different from the usual? Other questions also arise: How do humans control an inherently unstable vehicle such as a bicycle and how could a vehicle be designed or modified with an automatic control system to improve its dynamic properties? Using mainly linear vehicle dynamic models as well as discussion of nonlinear limiting effects, Vehicle Dynamics, Stability, and Control, Second Edition answers these questions and more. It illustrates the application of techniques from kinematics, rigid body dynamics, system dynamics, automatic control, stability theory, and aerodynamics to the study of the dynamic behavior of a number of vehicle types. In addition, it presents specialized topics dealing specifically with vehicle dynamics such as the force generation by pneumatic tires, railway wheels, and wings. The idea that vehicles can exhibit dangerous behavior for no obvious reason is in itself fascinating. Particularly obvious in racing situations or in speed record attempts, dynamic problems are also ubiquitous in everyday life and are often the cause of serious accidents. Using relatively simple mathematical models, the book offers a satisfying introduction to the dynamics, stability, and control of vehicles.

Vehicle Dynamics Stability and Control

Author : Dean Karnopp
File Size : 31.9 MB
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Anyone who has experience with a car, bicycle, motorcycle, or train knows that the dynamic behavior of different types of vehicles and even different vehicles of the same class varies significantly. For example, stability (or instability) is one of the most intriguing and mysterious aspects of vehicle dynamics. Why do some motorcycles sometimes exh

Comprehensive Analysis of Gross Vehicle Dynamics Stability and Control Under Different Road and Operating Conditions

Author : Hsi-Fu Lin
File Size : 48.1 MB
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Dynamic Stability and Control of Tripped and Untripped Vehicle Rollover

Author : Zhilin Jin
File Size : 90.33 MB
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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.

Dynamics Integrated Control and Stability of Automated Road Vehicles

Author : Aleksandar Rodic
File Size : 74.98 MB
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Motion control as well as control of vehicle's dynamic performance represents a very delicate and challenging task from the point of view of control system design. Namely, it is necessary to ensure that the control simultaneously satisfies several requirements such as: global stability, ride quality, ride comfort, minimal dynamic loads of the mechanical subsystems, low energy consumption, etc. The choice of the appropriate control strategy and the way of its realization represent a crucial problem the solution of which demands sufficiently deep knowledge of dynamic behaviour of road vehicle in various motion conditions. There are several books dealing with modelling and automotive control. However, the control algorithms described in them are prevailingly based on the so-called decentralized principle, using most often simplified, planar vehicle models and the common control techniques - robust local controllers. Thus, up to now, there has been no text considering the centralized approach to practical vehicle stability analysis. Because of that, the goal of this book is to stress out the importance of knowledge of vehicle dynamics, the benefits of implementation of the integrated control in advanced vehicle controllers, as well as the importance of system's stability analysis in the synthesis of dynamic control laws. Based on the entire vehicle dynamics, two novelties are introduced: (i) integrated dynamic control of road vehicles based on a centralized control approach and (ii) practical stability analysis of the vehicle system. The author: Dr. Aleksandar D. Rodic was born in Belgrade, Yugoslavia, in 1960. His main interest is in modelling, system identification, simulation and control of large-scale dynamic systems. His special interest includes design of integrated and intelligent control algorithms of road vehicles operating with driver assisted control systems. He is the author of more then 40 scientific papers in leading international journals and proceedings of scientific meetings. He is scientific consultant of several international journals. He is winner of the UNIDO/UNDP and of the Alexander von Humboldt Research Fellowship. Prof. Dr. Miomir K. Vukobratovic was born in Zrenjanin, Yugoslavia, 1931. His main interest is the development of efficient modelling of robotic systems' dynamics. Special interest is in modelling and control of legged locomotion robots and active systems. He is the author of more than 20 scientific books and monographs as well as more than 500 papers in world-recognized international journals or conference proceedings. He is a member of many international scientific committees. He is the President of the Yugoslav Engineering Academy, member of Serbian and foreign member of Russian Academy of Sciences. He is an honoured Professor and Doctor Honoris Causa of several universities. He is holder of several international awards for professional activities.

Vehicle Dynamics

Author : Rao V. Dukkipati
File Size : 75.45 MB
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Growing worldwide populations increasingly require faster, safer, and more efficient transportation systems. These needs have led to a renewed interest in high-speed guided ground transportation technology, inspired considerable research, and instigated the development of better analytical and experimental tools. A very significant body of knowledge currently exists, but has primarily remained scattered throughout the literature. Vehicle Dynamics consolidates information from a wide spectrum of sources in the area of guided ground transportation. Each chapter provides a concise, thorough statement of the fundamental theory, followed by illustrative worked examples and exercises. The author also includes a variety of unsolved problems designed to amplify and extend the theory and provide problem-solving experience. The subject of guided ground transportation is vast, but this book brings together the core topics, providing in-depth treatments of topics ranging from system classification, analysis, and response to lading dynamics and rail, air cushion, and maglev systems. In doing so, Vehicle Dynamics offers a singular opportunity for readers to build the solid background needed for solving practical vehicle dynamics problems or pursuing more advanced or specialized studies.

Vehicle Dynamics and Control

Author : Rajesh Rajamani
File Size : 76.53 MB
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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.

Integrated Vehicle Dynamics and Control

Author : Wuwei Chen
File Size : 37.12 MB
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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

Generalized Vehicle Dynamics

Author : Daniel Williams
File Size : 64.70 MB
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Author Daniel E. Williams, an industry professional with more 30 years of experience in chassis control systems from concept to launch, brings this experience and his unique approach to readers of Generalized Vehicle Dynamics. This book makes use of nomenclature and conventions not used in other texts. This combination allows the derivation of complex vehicles that roll with multiple axles, any of which can be steered, to be directly predicted by manipulation of a generalized model. Similarly the ride characteristics of such a generalized vehicle are derived. This means the vehicle dynamic behavior of these vehicles can be directly written from the results derived in this work, and there is no need to start from Newton's Second Law to create such insight. Using new and non-standard conventions allows wider applicability to complex vehicles, including autonomous vehicles. Generalized Vehicle Dynamics is divided into two main sections-ride and handling-with roll considered in both. Each section concludes with a case study that applies the concepts presented in the preceding chapters to actual vehicles. Chapters include Simple Suspension as a Linear Dynamic System, The Quarter-Car Model, The Pitch Plane Model, The Roll Plane Mode, Active Suspension to Optimize Ride, Handling Basics, Reference Frames, New Conventions, Two-Axle Yaw Plane Model, Rear Axle Steering and Lanekeeping, Two-Axle Vehicles that Roll, Three-Axle Vehicle Dynamics, Generalized Multi-Axle Vehicle Dynamics and Automated Vehicle Architecture from Vehicle Dynamics. "A fresh and more inclusive book that lays out much new material in vehicle dynamics." - L. Daniel Metz, Ph.D.

Proceedings of the 2004 SAE Automotive Dynamics Stability Controls Conference

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"SAE 2004 Automotive Dynamics & Stability and Controls Conference, Detroit, Michigan, USA, May 4-6, 2004"--P. [4] of cover.