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Optimal Control Allocation For Road Vehicle Dynamics Using Wheel Steer Angles Brake Drive Torques Wheel Loads And Camber Angles
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Book Synopsis Optimal Control Allocation for Road Vehicle Dynamics Using Wheel Steer Angles, Brake/drive Torques, Wheel Loads, and Camber Angles by : Christian Knobel
Download or read book Optimal Control Allocation for Road Vehicle Dynamics Using Wheel Steer Angles, Brake/drive Torques, Wheel Loads, and Camber Angles written by Christian Knobel and published by . This book was released on 2009 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Integrated Vehicle Dynamics and Control by : Wuwei Chen
Download or read book Integrated Vehicle Dynamics and Control written by Wuwei Chen and published by John Wiley & Sons. This book was released on 2016-03-31 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Control Applications of Vehicle Dynamics by : Jingsheng Yu
Download or read book Control Applications of Vehicle Dynamics written by Jingsheng Yu and published by CRC Press. This book was released on 2021-12-20 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Dynamics and Optimal Control of Road Vehicles by : D. J. N. Limebeer
Download or read book Dynamics and Optimal Control of Road Vehicles written by D. J. N. Limebeer and published by Oxford University Press. This book was released on 2018-08-23 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamics and Optimal Control of Road Vehicles uniquely offers a unified treatment of tyre, car and motorcycle dynamics, and the application of nonlinear optimal control to vehicle-related problems within a single book. This is a comprehensive and accessible text that emphasises the theoretical aspects of vehicular modelling and control. The book focuses on two major elements. The first is classical mechanics and its use in building vehicle and tyre dynamics models. The second focus is nonlinear optimal control, which is used to solve a range of minimum-time and minimum-fuel, as well as track curvature reconstruction problems. As is known classically, all of this material is bound together by the calculus of variations and stationary principles. The treatment of this material is supplemented with a number of examples that were designed to highlight obscurities and subtleties in the theory.
Book Synopsis A Global Control Approach to Improving Vehicle Handling by : Ssu-Hsin Yu
Download or read book A Global Control Approach to Improving Vehicle Handling written by Ssu-Hsin Yu and published by . This book was released on 1991 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Autonomous Vehicle Maneuvering at the Limit of Friction by : Victor Fors
Download or read book Autonomous Vehicle Maneuvering at the Limit of Friction written by Victor Fors and published by Linköping University Electronic Press. This book was released on 2020-10-23 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Without a driver to fall back on, a fully self-driving car needs to be able to handle any situation it can encounter. With the perspective of future safety systems, this research studies autonomous maneuvering at the tire-road friction limit. In these situations, the dynamics is highly nonlinear, and the tire-road parameters are uncertain. To gain insights into the optimal behavior of autonomous safety-critical maneuvers, they are analyzed using optimal control. Since analytical solutions of the studied optimal control problems are intractable, they are solved numerically. An optimization formulation reveals how the optimal behavior is influenced by the total amount of braking. By studying how the optimal trajectory relates to the attainable forces throughout a maneuver, it is found that maximizing the force in a certain direction is important. This is like the analytical solutions obtained for friction-limited particle models in earlier research, and it is shown to result in vehicle behavior close to the optimal also for a more complex model. Based on the insights gained from the optimal behavior, controllers for autonomous safety maneuvers are developed. These controllers are based on using acceleration-vector references obtained from friction-limited particle models. Exploiting that the individual tire forces tend to be close to their friction limits, the desired tire slip angles are determined for a given acceleration-vector reference. This results in controllers capable of operating at the limit of friction at a low computational cost and reduces the number of vehicle parameters used. For straight-line braking, ABS can intervene to reduce the braking distance without prior information about the road friction. Inspired by this, a controller that uses the available actuation according to the least friction necessary to avoid a collision is developed, resulting in autonomous collision avoidance without any estimation of the tire–road friction. Investigating time-optimal lane changes, it is found that a simple friction-limited particle model is insufficient to determine the desired acceleration vector, but including a jerk limit to account for the yaw dynamics is sufficient. To enable a tradeoff between braking and avoidance with a more general obstacle representation, the acceleration-vector reference is computed in a receding-horizon framework. The controllers developed in this thesis show great promise with low computational cost and performance not far from that obtained offline by using numerical optimization when evaluated in high-fidelity simulation.
Book Synopsis Optimal Braking Patterns and Forces in Autonomous Safety-Critical Maneuvers by : Victor Fors
Download or read book Optimal Braking Patterns and Forces in Autonomous Safety-Critical Maneuvers written by Victor Fors and published by Linköping University Electronic Press. This book was released on 2019-05-02 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
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 Comprehensive Analysis of Gross Vehicle Dynamics, Stability and Control Under Different Road and Operating Conditions by : Hsi-Fu Lin
Download or read book Comprehensive Analysis of Gross Vehicle Dynamics, Stability and Control Under Different Road and Operating Conditions written by Hsi-Fu Lin and published by . This book was released on 1994 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Road Vehicle Dynamics by : Georg Rill
Download or read book Road Vehicle Dynamics written by Georg Rill and published by CRC Press. This book was released on 2011-09-21 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: In striving for optimal comfort and safety conditions in road vehicles, today's electronically controlled components provide a range of new options. These are developed and tested using computer simulations in software in the loop or hardware in the loop environments-an advancement that requires the modern automotive engineer to be able to build ba
Book Synopsis Vehicle Dynamics by : Dieter Schramm
Download or read book Vehicle Dynamics written by Dieter Schramm and published by Springer. This book was released on 2017-07-03 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors examine in detail the fundamentals and mathematical descriptions of the dynamics of automobiles. In this context, different levels of complexity are presented, starting with basic single-track models up to complex three-dimensional multi-body models. A particular focus is on the process of establishing mathematical models based on real cars and the validation of simulation results. The methods presented are explained in detail by means of selected application scenarios. In addition to some corrections, further application examples for standard driving maneuvers have been added for the present second edition. To take account of the increased use of driving simulators, both in research, and in industrial applications, a new section on the conception, implementation and application of driving simulators has been added.
Book Synopsis Advanced Vehicle Control by : Johannes Edelmann
Download or read book Advanced Vehicle Control written by Johannes Edelmann and published by CRC Press. This book was released on 2016-12-19 with total page 1463 pages. Available in PDF, EPUB and Kindle. Book excerpt: The AVEC symposium is a leading international conference in the fields of vehicle dynamics and advanced vehicle control, bringing together scientists and engineers from academia and automotive industry. The first symposium was held in 1992 in Yokohama, Japan. Since then, biennial AVEC symposia have been established internationally and have considerably contributed to the progress of technology in automotive research and development. In 2016 the 13th International Symposium on Advanced Vehicle Control (AVEC’16) was held in Munich, Germany, from 13th to 16th of September 2016. The symposium was hosted by the Munich University of Applied Sciences. AVEC’16 puts a special focus on automatic driving, autonomous driving functions and driver assist systems, integrated control of interacting control systems, controlled suspension systems, active wheel torque distribution, and vehicle state and parameter estimation. 132 papers were presented at the symposium and are published in these proceedings as full paper contributions. The papers review the latest research developments and practical applications in highly relevant areas of vehicle control, and may serve as a reference for researchers and engineers.
Book Synopsis Applications of Model Predictive Control to Vehicle Dynamics for Active Safety and Stability by : Craig Earl Beal
Download or read book Applications of Model Predictive Control to Vehicle Dynamics for Active Safety and Stability written by Craig Earl Beal and published by Stanford University. This book was released on 2011 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Road Vehicle Dynamics by : Rao V Dukkipati
Download or read book Road Vehicle Dynamics written by Rao V Dukkipati and published by SAE International. This book was released on 2008-06-19 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a detailed and well-rounded overview of the dynamics of road vehicle systems. Readers will come to understand how physical laws, human factor considerations, and design choices come together to affect a vehicle's ride, handling, braking, and acceleration. Following an introduction and general review of dynamics, topics include: analysis of dynamic systems; tire dynamics; ride dynamics; vehicle rollover analysis; handling dynamics; braking; acceleration; and total vehicle dynamics.
Book Synopsis Tire and Vehicle Dynamics by : Hans Pacejka
Download or read book Tire and Vehicle Dynamics written by Hans Pacejka and published by Elsevier. This book was released on 2012-04-12 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive book on tire mechanics by the acknowledged world expert Covers everything you need to know about pneumatic tires and their impact on vehicle performance, including mathematic modeling and its practical application Written by the acknowledged world authority on the topic and the name behind the most widely used model, Pacejka’s ‘Magic Formula’ Updated with the latest information on new and evolving tire models to ensure you can select the right model for your needs, apply it appropriately and understand its limitations In this well-known resource, leading tire model expert Hans Pacejka explains the relationship between operational variables, vehicle variables and tire modeling, taking you on a journey through the effective modeling of complex tire and vehicle dynamics problems. Covering the latest developments to Pacejka's own industry-leading model as well as the widely-used models of other pioneers in the field, the book combines theory, guidance, discussion and insight in one comprehensive reference. While the details of individual tire models are available in technical papers published by SAE, FISITA and other automotive organizations, Tire and Vehicle Dynamics remains the only reliable collection of information on the topic and the standard go-to resource for any engineer or researcher working in the area. New edition of the definitive book on tire mechanics, by the acknowledged world authority on the topic Covers everything an automotive engineer needs to know about pneumatic tires and their impact on vehicle performance, including mathematic modelling and its practical application Most vehicle manufacturers use what is commonly known as Pacejka’s ‘Magic Formula’, the tire model developed and presented in this book
Download or read book Vehicle Dynamics written by Basilio Lenzo and published by Springer Nature. This book was released on 2021-12-15 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the fundamentals of vehicle dynamics, as well as the recent trends in the field, such as torque vectoring control, vehicle state estimation, and autonomous vehicles. It investigates the most pressing problems that vehicle dynamics engineers have been facing nowadays, and the challenges of autonomous vehicles in terms of perception, path planning, and analysis of the road environment. The book will serve as a useful tool for graduate students and researchers in vehicle dynamics and control.
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 2011-12-23 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.
