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Control-Oriented Dynamic Modeling and Characterization of Magnetorheological Dampers

[+] Author Affiliations
Andrea Spaggiari, Eugenio Dragoni

University of Modena and Reggio Emilia, Reggio Emilia, Italy

Paper No. SMASIS2009-1228, pp. 391-399; 9 pages
doi:10.1115/SMASIS2009-1228
From:
  • ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Volume 1: Active Materials, Mechanics and Behavior; Modeling, Simulation and Control
  • Oxnard, California, USA, September 21–23, 2009
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-4896-8 | eISBN: 978-0-7918-3857-0
  • Copyright © 2009 by ASME

abstract

This work is about the dynamic modeling and the experimental testing of magnetorheological (MR) dampers. The main improvement of this work over former models is the identification of dynamic parameters that are independent of the working conditions and that vary only as a function of the current. A simple model is built on the basis of the literature with the aim of simplifying the effort in retrieving the parameters and in controlling the system. The excitation current is introduced in the model as a variable, not only reducing the amount of test needed to assess the parameters, but also obtaining a faster model that can be profitably used in motion control. A second order polynomial relationship between the applied current and the three variable parameters is found, showing a saturation effect at high currents.

Copyright © 2009 by ASME

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