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Quasi-Active Damping

[+] Author Affiliations
Jack N. Potter, Simon A. Neild, David J. Wagg

University of Bristol, Bristol, UK

Paper No. DETC2009-86582, pp. 1379-1386; 8 pages
  • ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts A and B
  • San Diego, California, USA, August 30–September 2, 2009
  • Conference Sponsors: Design Engineering Division and Computers in Engineering Division
  • ISBN: 978-0-7918-4898-2 | eISBN: 978-0-7918-3856-3
  • Copyright © 2009 by ASME


This article introduces a new method of system design using semi-active dampers named quasi-active damping. This technique is the design of dynamical systems and controllers using multiple semi-active dampers such that, at any instant, the desired control force can always be achieved using a combination of the dampers. The motivation is to produce levels of performance approaching those of active systems but with the energy consumption and stability of semi-active systems. The concept is demonstrated in simulation through the design of a stiffness-cancelling suspension system. It is also shown how the robustness of the system can be improved through the addition of a secondary, closed-loop, controller.

Copyright © 2009 by ASME
Topics: Damping



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