Download or read book Vibration Suppression and Safety Seat Motion Design of a Hyper active Seat written by Samuel John Klooster and published by . This book was released on 2004 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whole-body vibration is an important problem facing operators of off-road vehicles. Research has shown that operators exposed to low-frequency whole-body vibration can experience temporary and even permanent injuries. One solution to this problem is to develop an active seat capable of canceling the vibrations felt by the operator. Several passive, semi-active, active, and fully active seats have been designed and built to address this problem. Furthermore, controllers have been developed to optimize the seat performance. Vibration cancellation seating systems seem to be a promising and practical way to reduce the effects of whole-body vibration. To extend developments in this area, a Hyper-Active seat has been designed and built at the Georgia Institute of Technology. The seat utilizes a 3 Revolute-Prismatic-Revolute (RPR) parallel manipulator design which allows for the independent control of the vertical, horizontal and pitch angle directions. The seat is powered using three hydraulic actuators which are controlled using MATLAB's Simulink, xPC Target, and Real-Time Workshop. Controllers were developed to control the position of the seat, as well as cancel unwanted vibration. To test the performance of the Hyper-Active seat, the system identification of the seat was undertaken using open-loop forcing functions. The seat was evaluated in each degree of freedom to understand the potential of the seat to cancel harmful vibration. In addition to reducing harmful vibrations, the seat can double as a safety seat to reduce injuries during a frontal collision. If the front edge of the seat bottom can be raised very quickly, then the forward motion of the passenger can be reduced during a crash. An optimal method for performing this motion is developed.
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
Download or read book Combine Harvesters written by Petre Miu and published by CRC Press. This book was released on 2015-08-18 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: From Basic Fundamentals to Advanced Design ApplicationsA culmination of the author's more than 20 years of research efforts, academic papers, and lecture notes, Combine Harvesters: Theory, Modeling, and Design outlines the key concepts of combine harvester process theory and provides you with a complete and thorough understanding of combine harvest
Download or read book Vibration Protection Systems written by Chang-Myung Lee and published by Cambridge University Press. This book was released on 2021-11-18 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design and deploy advanced vibration protection systems based on elastic composites under post-buckling, with this essential reference. Methods for designing vibration protection systems with negative and quasi-zero stiffness are formulated, explained, and demonstrated in practice. All key steps of the system design are covered, including the type and number synthesis, modelling and studying of stress-strain state under post-buckling of elastic composite designs, chaotic dynamics and stability conditions, real-time dimensioning, and active motion control. In addition to coverage of underlying theory, the use in helicopters, buses, railroad vehicles, construction equipment and agricultural machinery are included. An excellent reference for researchers and practicing engineers, as well as a tutorial for university students and professors with an interest in study, development and application of alternative methods of vibration protection anywhere.
Download or read book Adaptive Control of an Active Seat for Occupant Vibration Reduction written by Zengkang Gan and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hysteresis Characterization and Control of Electrorheological and Magnetorheological Materials written by Xian-Xu Bai and published by Frontiers Media SA. This book was released on 2021-09-15 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vibration Theory and Applications with Finite Elements and Active Vibration Control written by Alan Palazzolo and published by John Wiley & Sons. This book was released on 2016-03-21 with total page 973 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on many years of research and teaching, this book brings together all the important topics in linear vibration theory, including failure models, kinematics and modeling, unstable vibrating systems, rotordynamics, model reduction methods, and finite element methods utilizing truss, beam, membrane and solid elements. It also explores in detail active vibration control, instability and modal analysis. The book provides the modeling skills and knowledge required for modern engineering practice, plus the tools needed to identify, formulate and solve engineering problems effectively.
Download or read book Journal of Dynamic Systems Measurement and Control written by and published by . This book was released on 2003 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes theoretical and applied original papers in dynamic systems. Theoretical papers present new theoretical developments and knowledge for controls of dynamical systems together with clear engineering motivation for the new theory. Applied papers include modeling, simulation, and corroboration of theory with emphasis on demonstrated practicality.
Download or read book Proceedings of the ASME Aerospace Division written by American Society of Mechanical Engineers. Aerospace Division and published by . This book was released on 2001 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Shock and Vibration Bulletin written by and published by . This book was released on 1968 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling and Control of Mechatronic and Robotic Systems written by Alessandro Gasparetto and published by MDPI. This book was released on 2021-09-02 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently, the modelling and control of mechatronic and robotic systems is an open and challenging field of investigation in both industry and academia. The book encompasses the kinematic and dynamic modelling, analysis, design, and control of mechatronic and robotic systems, with the scope of improving their performance, as well as simulating and testing novel devices and control architectures. A broad range of disciplines and topics are included, such as robotic manipulation, mobile systems, cable-driven robots, wearable and rehabilitation devices, variable stiffness safety-oriented mechanisms, optimization of robot performance, and energy-saving systems.
Download or read book Highway Safety Literature written by and published by . This book was released on 1969 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research on Active Vibration Isolation Techniques for Aircraft Pilot Protection written by Peter C. Calcaterra and published by . This book was released on 1967 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was conducted to evaluate the feasibility of protecting pilots from the vertical dynamic excitations experienced during low-altitude, high-speed (LAHS) flight by means of active isolation techniques. Performance specifications for candidate isolation systems were evolved based on definition of the expected dynamic environment, human tolerance levels, and cockpit clearance. Required vibration isolation and maximum relative displacement values were postulated. Analyses of existing isolation techniques indicated that, for the selected dynamic environment typically experienced during LAHS flights in the vertical direction (i.e., combined vibration and sustained acceleration excitations), passive systems cannot provide the required degree of vibration isolation while simultaneously limiting the maximum relative displacement to the desired values. Various active isolation techniques were evaluated. An active hydraulic system was selected, employing acceleration and displacement feedback mechanisms. Analyses were conducted to define the type of compensation and loop gains required to provide the desired isolation, limit the dynamic deflection, and maintain system stability. A laboratory model for experimental research was designed and tested. Test results show that the developed active hydraulic isolation technique provides the vertical isolation and displacement control postulated to be required for pilot protection during LAHS flight. In addition, the system exhibits zero static deflection, and is essentially insensitive to forces applied at the isolated payload, and to human-body resonance coupling effects. (Author).
Download or read book Highway Safety Literature written by United States. National Highway Safety Bureau and published by . This book was released on 1969 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Safety Literature Annual Cumulation 1969 Vehicle Safety Bibliography Issues 69 1 Through 69 50 January December 1969 written by and published by . This book was released on 1970 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Locomotive Crashworthiness and Cab Working Conditions written by and published by . This book was released on 1996 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
