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Author : David Charles Beard
Publisher :
ISBN 13 :
Total Pages : 428 pages
Book Rating : 4.:/5 (57 download)
Download or read book Design of a High Performance, Energy Efficient, Active Vehicle Suspension written by David Charles Beard and published by . This book was released on 1995 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Avesta Goodarzi
Publisher : Springer Nature
ISBN 13 : 3031218043
Total Pages : 96 pages
Book Rating : 4.0/5 (312 download)
Download or read book Vehicle Suspension System Technology and Design written by Avesta Goodarzi and published by Springer Nature. This book was released on 2023-02-13 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the procedures of developing an adaptive suspension system with examples. This book gives a thorough introduction to air suspension systems, which contain height leveling systems, electronic control systems, design fundamentals, performance superiority, etc. This book encompasses all essential aspects of suspension systems and provides an easy approach to their understanding and design. Provides a step-by-step approach using pictures, graphs, tables, and examples so that the reader may easily grasp difficult concepts. This book defines and examines suspension mechanisms and their geometrical features. Suspension motions and ride models are derived for the study of vehicle ride comfort. Analysis of suspension design factors and component sizing along with air suspension systems and their functionalities are reviewed.
Author : Sergio M. Savaresi
Publisher : Elsevier
ISBN 13 : 0080966799
Total Pages : 241 pages
Book Rating : 4.0/5 (89 download)
Download or read book Semi-Active Suspension Control Design for Vehicles written by Sergio M. Savaresi and published by Elsevier. This book was released on 2010-08-13 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semi-Active Suspension Control Design for Vehicles presents a comprehensive discussion of designing control algorithms for semi-active suspensions. It also covers performance analysis and control design. The book evaluates approaches to different control theories, and it includes methods needed for analyzing and evaluating suspension performances, while identifying optimal performance bounds. The structure of the book follows a classical path of control-system design; it discusses the actuator or the variable-damping shock absorber, models and technologies. It also models and discusses the vehicle that is equipped with semi-active dampers, and the control algorithms. The text can be viewed at three different levels: tutorial for novices and students; application-oriented for engineers and practitioners; and methodology-oriented for researchers. The book is divided into two parts. The first part includes chapters 2 to 6, in which fundamentals of modeling and semi-active control design are discussed. The second part includes chapters 6 to 8, which cover research-oriented solutions and case studies. The text is a comprehensive reference book for research engineers working on ground vehicle systems; automotive and design engineers working on suspension systems; control engineers; and graduate students in control theory and ground vehicle systems. Appropriate as a tutorial for students in automotive systems, an application-oriented reference for engineers, and a control design-oriented text for researchers that introduces semi-active suspension theory and practice Includes explanations of two innovative semi-active suspension strategies to enhance either comfort or road-holding performance, with complete analyses of both Also features a case study showing complete implementation of all the presented strategies and summary descriptions of classical control algorithms for controlled dampers
Author : Bruce Maclaurin
Publisher : John Wiley & Sons
ISBN 13 : 1119258782
Total Pages : 277 pages
Book Rating : 4.1/5 (192 download)
Download or read book High Speed Off-Road Vehicles written by Bruce Maclaurin and published by John Wiley & Sons. This book was released on 2018-09-17 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise reference that provides an overview of the design of high speed off-road vehicles High Speed Off-Road Vehicles is an excellent, in-depth review of vehicle performance in off-road conditions with a focus on key elements of the running gear systems of vehicles. In particular, elements such as suspension systems, wheels, tyres, and tracks are addressed in-depth. It is a well-written text that provides a pragmatic discussion of off-road vehicles from both a historical and analytical perspective. Some of the unique topics addressed in this book include link and flexible tracks, ride performance of tracked vehicles, and active and semi-active suspension systems for both armoured and unarmoured vehicles. The book provides spreadsheet-based analytic approaches to model these topic areas giving insight into steering, handling, and overall performance of both tracked and wheeled systems. The author further extends these analyses to soft soil scenarios and thoroughly addresses rollover situations. The text also provides some insight into more advanced articulated systems. High Speed Off-Road Vehicles: Suspensions, Tracks, Wheels and Dynamics provides valuable coverage of: Tracked and wheeled vehicles Suspension component design and characteristics, vehicle ride performance, link track component design and characteristics, flexible track, and testing of active suspension test vehicles General vehicle configurations for combat and logistic vehicles, suspension performance modelling and measurement, steering performance, and the effects of limited slip differentials on the soft soil traction and steering behavior of vehicles Written from a very practical perspective, and based on the author’s extensive experience, High Speed Off-Road Vehicles provides an excellent introduction to off-road vehicles and will be a helpful reference text for those practicing design and analysis of such systems.
Author : Weichao Sun
Publisher : Springer
ISBN 13 : 3030157857
Total Pages : 231 pages
Book Rating : 4.0/5 (31 download)
Download or read book Advanced Control for Vehicle Active Suspension Systems written by Weichao Sun and published by Springer. This book was released on 2019-03-13 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on most recent theoretical findings on control issues for active suspension systems. The authors first introduce the theoretical background of active suspension control, then present constrained H∞ control approaches of active suspension systems in the entire frequency domain, focusing on the state feedback and dynamic output feedback controller in the finite frequency domain which people are most sensitive to. The book also contains nonlinear constrained tracking control via terminal sliding-mode control and adaptive robust theory, presenting controller design of active suspensions as well as the reliability control of active suspension systems. The target audience primarily comprises research experts in control theory, but the book may also be beneficial for graduate students alike.
Author : Logan Biggs
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (143 download)
Download or read book RE20 written by Logan Biggs and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mustefa Jibril
Publisher : GRIN Verlag
ISBN 13 : 3346146030
Total Pages : 172 pages
Book Rating : 4.3/5 (461 download)
Download or read book H∞ and μ-synthesis Design of Quarter Car Active Suspension System written by Mustefa Jibril and published by GRIN Verlag. This book was released on 2020-04-09 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master's Thesis from the year 2020 in the subject Engineering - Automotive Engineering, Jimma University College of Agriculture and Veterinary Medicine, language: English, abstract: To improve the road handling and passenger comfort of a vehicle, a suspension system is provided. An active suspension system is considered to be better than the passive suspension system. In this thesis, 2 degrees of freedom of a linear quarter car active suspension system is designed, which is subject to different disturbances on the road. Since the parametric uncertainty in the spring, the shock absorber, mass and the actuator has been considered, robust control is used. In this thesis, H∞ and μ− synthesis controllers are used to improve the driving comfort and the ability to drive the car on the road. For the analysis of the time domain, using a MATLAB script program and performed a test using four disturbance inputs of the road (bump, random, sinusoidal and harmonic) for the suspension deflection, the acceleration of the body and the body travel for the active suspension with the H∞ controller and active suspension with μ− synthesis controller and the comparative simulation and reference results demonstrate the effectiveness of the presented active suspension system with μ− synthesis controller. In addition, in this thesis, comparison have been made between the active suspension system with μ−synthesis controller and 5 different robust controller for suspension deflection, body acceleration and body travel tests using bump, random, sinusoidal pavements and harmonic road disturbances. Body accelerations comparison of the active suspension system with μ−synthesis controller with VW (Volkswagen) Passat B5 passenger car is done for a bump road input disturbance and the result shows that there is a 50% reduction in body acceleration for the active suspension system with μ− synthesis controller.
Author : Emanuele Guglielmino
Publisher : Springer Science & Business Media
ISBN 13 : 1848002319
Total Pages : 302 pages
Book Rating : 4.8/5 (48 download)
Download or read book Semi-active Suspension Control written by Emanuele Guglielmino and published by Springer Science & Business Media. This book was released on 2008-05-27 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semi-active Suspension Control provides an overview of vehicle ride control employing smart semi-active damping systems. These systems are able to tune the amount of damping in response to measured vehicle-ride and handling indicators. Two physically different dampers (magnetorheological and controlled-friction) are analysed from the perspectives of mechatronics and control. Ride comfort, road holding, road damage and human-body modelling are studied. Mathematical modelling is balanced by a large and detailed section on experimental implementation, where a variety of automotive applications are described offering a well-rounded view. The implementation of control algorithms with regard to real-life engineering constraints is emphasised. The applications described include semi-active suspensions for a saloon car, seat suspensions for vehicles not equipped with a primary suspension, and control of heavy-vehicle dynamic-tyre loads to reduce road damage and improve handling.
Author : Haiping Du
Publisher : Academic Press
ISBN 13 : 0128226838
Total Pages : 316 pages
Book Rating : 4.1/5 (282 download)
Download or read book Advanced Seat Suspension Control System Design for Heavy Duty Vehicles written by Haiping Du and published by Academic Press. This book was released on 2020-05-22 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Seat Suspension Control System Design for Heavy Duty Vehicles provides systematic knowledge of the advanced seat suspension design and control for heavy duty vehicles. Nowadays, people are paying more and more attention to ride comfort and the health of drivers and passengers. This is especially for heavy duty vehicles, where drivers/operators are exposed to much severer vibrations than those in passenger vehicles due to a harsh working environment, operating conditions, and long hour driving, etc. Seat suspension systems can effectively help to suppress the high magnitude vibration transmitted to drivers with relatively simple structure and low cost, and hence are widely adopted in heavy duty vehicles. This book helps researchers and engineers to have a comprehensive understanding of the seat suspension system and to conduct in-depth studies on seat suspension design and control; this book covers a wide range of perspectives about seat suspension design and control methods. Describes the variable damping, variable stiffness, and, especially, variable inertance seat suspensions Provides the advanced and comprehensive knowledge about semi-active vibration control Introduces the multiple-DOF seat suspension Includes the innovative hybrid seat suspension and nonlinear seat suspension All the introduced designs have been prototyped and experimentally validated Provides Matlab Simulation programming codes
Author : Mohammad Javad Abedinilaksar
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (131 download)
Download or read book Active Suspension Development Based on Energy Analysis written by Mohammad Javad Abedinilaksar and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This research focuses on developing active suspension optimal controllers for two linear and non-linear half-car models. A detailed comparison between quarter-car and half-car active suspension approaches is provided for improving two important scenarios in vehicle dynamics, i.e. ride quality and road holding. Having used a half-car vehicle model, heave and pitch motion are analyzed for those scenarios, with cargo mass as a variable. The governing equations of the system are analysed in a multi-energy domain package, i.e., 20-Sim. System equations are presented in the bond-graph language to facilitate calculation of energy usage. The results present optimum set of gains for both ride quality and road holding scenarios are the gains which has derived when maximum allowable cargo mass is considered for the vehicle. The energy implications of substituting passive suspension units with active ones are studied by considering not only the energy used by the actuator, but also the reduction in energy lost through the passive damper. Energy analysis showed less energy was dissipated in shock absorbers when either quarter-car or half-car controllers were used instead of passive suspension. It was seen that more energy could be saved by using half-car active controllers than the quarter-car ones. Results also proved that using active suspension units, whether quarter-car or half-car based, under those realistic limitations is energy-efficient and suggested.
Author : Saad Kashem
Publisher : Springer
ISBN 13 : 9811054789
Total Pages : 218 pages
Book Rating : 4.8/5 (11 download)
Download or read book Vehicle Suspension Systems and Electromagnetic Dampers written by Saad Kashem and published by Springer. This book was released on 2017-09-04 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the development of a new analytical, full-vehicle model with nine degrees of freedom, which uses the new modified skyhook strategy (SKDT) to control the full-vehicle vibration problem. The book addresses the incorporation of road bank angle to create a zero steady-state torque requirement when designing the direct tilt control and the dynamic model of the full car model. It also highlights the potential of the SKDT suspension system to improve cornering performance and paves the way for future work on the vehicle’s integrated chassis control system. Active tilting technology to improve vehicle cornering is the focus of numerous ongoing research projects, but these don’t consider the effect of road bank angle in the control system design or in the dynamic model of the tilting standard passenger vehicles. The non-incorporation of road bank angle creates a non-zero steady state torque requirement.
Author : Nima Eslaminasab
Publisher :
ISBN 13 : 9780494432679
Total Pages : 162 pages
Book Rating : 4.4/5 (326 download)
Download or read book Development of a Semi-active Intelligent Suspension System for Heavy Vehicles written by Nima Eslaminasab and published by . This book was released on 2008 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the new advancements in the vibration control strategies and controllable actuator manufacturing, the semi-active actuators (dampers) are finding their way as an essential part of vibration isolators, particularly in vehicle suspension systems. This is attributed to the fact that in a semi-active system, the damping coefficients can be adjusted to improve ride comfort and road handling performances. The currently available semi-active damper technologies can be divided into two main groups. The first uses controllable electromagnetic valves. The second uses magnetorheological (MR) fluid to control the damping characteristics of the system. Leading automotive companies such as General Motors and Volvo have started to use semi-active actuators in the suspension systems of high-end automobiles, such as the Cadillac Seville and Corvette, to improve the handling and ride performance in the vehicle. But much more research and development is needed in design, fabrication, and control of semi-active suspension systems and many challenges must be overcome in this area. Particularly in the area of heavy vehicle systems, such as light armored vehicles, little related research has been done, and there exists no commercially available controllable damper suitable for the relatively high force and large displacement requirements of such application. As the first response to these requirements, this thesis describes the design and modeling of an in-house semi-active twin-tube shock absorber with an internal variable solenoid-actuated valve. A full-scale semi-active damper prototype is developed and the shock absorber is tested to produce the required forcing range. The test results are compared with results of the developed mathematical model. To gain a better understanding of the semi-active suspension controlled systems and evaluate the performance of those systems, using perturbation techniques this thesis provides a detailed nonlinear analysis of the semi-active systems and establishes the issue of nonlinearity in on-off semi-active controlled systems. Despite different semi-active control methods and the type of actuators used in a semi-active controlled system, one important practical aspect of all hydro-mechanical computer controlled systems is the response-time. The longest response-time is usually introduced by the actuator -in this case, controllable actuator - in the system. This study investigates the effect of response-time in a semi-active controlled suspension system using semi-active dampers. Numerical simulations and analytical techniques are deployed to investigate the issue. The performance of the system due to the response-time is then analyzed and discussed. Since the introduction of the semi-active control strategy, the challenge was to develop methods to effectively use the capabilities of semi-active devices. In this thesis, two semi-active control strategies are proposed. The first controller to be proposed is a new hybrid semi-active control strategy based on the conventional Rakheja-Sankar (R-S) semi-active control to provide better ride-handling quality for vehicle suspension systems as well as industrial vibration isolators. To demonstrate the effectiveness of this new strategy, the analytical method of averaging and the numerical analysis method are deployed. In addition, a one-degree-of-freedom test bed equipped with a semi-active magnetorheological (MR) damper is developed. The tests are performed using the MATLAB XPC-target to guarantee the real-time implementation of the control algorithm. The second controller is an intelligent fuzzy logic controller system to optimize the suspension performance. The results from this intelligent system are compared with those of several renowned suspension control methods such as Skyhook. It is shown that the proposed controller can enhance concurrently the vehicle handling and ride comfort, while consuming less energy than existing control methodologies. The key goal of this thesis is to employ the existing knowledge of the semi-active systems together with the new ideas to develop a semi-active suspension system. At the same time, development of an experimental simulation system for real-time control of an experimental test bed is considered. To achieve its goals and objectives, this research study combines and utilizes the numerical simulations and analytical methods, as well as lab-based experimental works. The challenge in this research study is to identify practical and industrial problems and develop proper solutions to those problems using viable scientific approaches.
Author : José Joaquin Granda
Publisher : Society for Computer Simulation International
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.3/5 (91 download)
Download or read book International Conference on Bond Graph Modeling, January 17-20, 1993, Hyatt Regency La Jolla, La Jolla, California written by José Joaquin Granda and published by Society for Computer Simulation International. This book was released on 1993 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Layne A. Clemen
Publisher :
ISBN 13 : 9781339261638
Total Pages : pages
Book Rating : 4.2/5 (616 download)
Download or read book Modeling, Capabilities, and Control of Electrodynamic Actuators and Variable-volume Air-springs in Active Vehicle Suspensions written by Layne A. Clemen and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Active suspensions have been investigated for many years. The benefits of these suspensions are well established: being able to both increase the ride quality for the vehicle occupants as well as promote better handling. Unfortunately, active suspensions reduce fuel efficiency and have seldom been implemented on commuter vehicles. As a result, electrodynamic dampers are currently being researched as a means to approach the performance of a fully active suspension with minimal energy consumption. This dissertation presents current research on the capabilities of electrodynamic actuators (EDA) as a means to approach the performance of a fully active suspension with minimal or no energy consumption. The regenerative capabilities of these actuators are investigated during fully active operation for a range of controller types - emphasizing road holding, ride, and energy regeneration. Two model predictive controllers (MPC) are constructed; a standard and frequency weighted MPC. The resulting controlled system is subjected to ISO roads A-D and the results are presented. For all of the standard MPC weightings, the suspension was able recover more energy than is required to run the suspension actively. Frequency weighting the controller increased suspension performance while also regenerating 3-12% more energy than the standard MPC. Results will be shown on the regenerative capabilities of electrodynamic actuators during fully active operation for a range of controller types - emphasizing road holding, ride, and energy regeneration. A major finding is the suspension's ability to recover more energy than is required to run actively. Additionally, optimal energy regeneration settings occurred on a Pareto trade-off curve for ride comfort and road holding. The parameter effects on the harvesting capabilities are briefly discussed using a static discrete linear quadratic regulator for active control. Results indicate there is a subset of system parameters that greatly affect the harvesting capability of the actuator and that given an adequate set of design parameters the actuator will be capable of harvesting more energy than is necessary for active operation. The second part of the dissertation covers a new type of active suspension that is designed based upon sliding mode control (SMC). Traditional SMC requires an equal number of actuators and control objectives. This dissertation presents a design method for controlling multiple sliding surfaces of nonlinear systems with matched uncertainty using a single actuator. Sliding mode control, in general, requires one actuator for every control objective. Compared to the vast literature on sliding mode control, there has been little work on general theories that can be applied to underactuated nonlinear control. A sufficient condition to guarantee simultaneous robust stabilization of multiple surfaces is derived. Multiple interpretations of the main result are considered, giving rise to different control algorithms. Examples are given to show the validity and trade-offs associated with each design. Background theory is presented for a stabilizing weighted single input multiple output (SIMO) sliding mode design. An active control suspension control design based upon this development is presented and simulated validation is shown. Using the developed theory, a fully active suspension controller is designed based upon multiple surface sliding mode control and the resulting controller is compared to known control designs for a passive, skyhook, and groundhook dampers. It is shown that the sliding mode based design has many more design parameters that can be utilized to achieve performance beyond that of known controllers. A simple algorithm to alter the suspension stiffness using a variable-volume air spring is presented and results of simulation of the controllers with an effective time varying stiffness are presented as well.
Author :
Publisher : Allied Publishers
ISBN 13 : 9780768014419
Total Pages : 640 pages
Book Rating : 4.0/5 (144 download)
Download or read book Proceedings of the third International Conference on Automotive and Fuel Technology written by and published by Allied Publishers. This book was released on 2004 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Walter G. VanCleave
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.:/5 (484 download)
Download or read book High Performance Automobile Suspension Design Factors and Their Impact on Vehicle Response written by Walter G. VanCleave and published by . This book was released on 2001 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Energy Research and Development Administration
Publisher :
ISBN 13 :
Total Pages : 800 pages
Book Rating : 4.3/5 (91 download)
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
