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Modeling, Simulation, and Control of Active Pneumatic Suspension System

[+] Author Affiliations
Jia Wang, A. G. Kelkar

Iowa State University, Ames, IA

Paper No. DSCC2010-4251, pp. 871-878; 8 pages
  • ASME 2010 Dynamic Systems and Control Conference
  • ASME 2010 Dynamic Systems and Control Conference, Volume 2
  • Cambridge, Massachusetts, USA, September 12–15, 2010
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 978-0-7918-4418-2 | eISBN: 978-0-7918-3884-6
  • Copyright © 2010 by ASME


This paper presents analytical modeling, system identification, and controller design for a “pneumatic-only” vibration isolation system. There exist extensive literature on traditional suspension designs but the literature on purely pneumatic suspension devices is very sparse. This paper presents an extensive modeling and experimental work for characterizing dynamical behavior of the system. The experimental data was used to derive approximate but simple low-order dynamic models using system identification techniques. A solenoid operated orifice mechanism is used to control the flow of air mass between air spring and accumulator. The design of accumulated air spring with controlled orifice constitutes a Continuously Variable Natural Frequency and Damping (CVNFD) device introduced in previous work by the second author. The paper also presents a robust control analysis and design for disturbance rejection problem. The results show promising trends for potential use of such simple and inexpensive system in various vibration isolation applications.

Copyright © 2010 by ASME



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