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Hardware-in-the-loop simulation of magnetorheological dampers for vehicle suspension systems

Batterbee, D.C. and Sims, N.D. (2007) Hardware-in-the-loop simulation of magnetorheological dampers for vehicle suspension systems. Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering, 221 (2). pp. 265-278. ISSN 0959-6518

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Abstract

Magnetorheological (MR) fluids provide an elegant means to enhance vibration control in primary vehicle suspensions. Such fluids can rapidly modify their flow characteristics in response to a magnetic field, so they can be used to create semi-active dampers. However, the behaviour of MR dampers is inherently non-linear and as a consequence, the choice of an effective control strategy remains an unresolved problem. Previous research has developed a method to linearize the damper's force/velocity response, to allow implementation of classical control techniques. In the present study, this strategy is used to implement skyhook damping laws within primary automotive suspensions. To simulate the vehicle suspension, a two-degree-of-freedom quarter car model is used, which is excited by realistic road profiles. The controller performance is investigated experimentally using the hardware-in-the-loop-simulation (HILS) method. This experimental method is described in detail and its performance is validated against numerical simulations for a simplified problem. The present authors demonstrate that feedback linearization can provide significant performance enhancements in terms of passenger comfort, road holding, and suspension working space compared with other control strategies. Furthermore, feedback linearization is shown to desensitize the controller to uncertainties in the input excitation such as changes in severity of the road surface roughness.

Item Type: Article
Copyright, Publisher and Additional Information: © IMechE 2007. Reproduced with permission from the publisher. The definitive, peer-reviewed and edited version of this article is published in Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, Volume 221, Number 2 / 2007 pages 265-278, DOI:10.1243/09596518JSCE304.
Keywords: Rheology Control equipment Feedback linearization Flow of fluids Magnetic fields Problem solving Vehicle suspensions Vibration control
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User: Dr Neil D Sims
Date Deposited: 21 Jul 2009 13:54
Last Modified: 08 Feb 2013 16:58
Published Version: http://dx.doi.org/10.1243/09596518JSCE304
Status: Published
Publisher: Professional Engineering Publishing
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/8860

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