This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Lai, C.-Y. Articles by Liao, W.H Search for Related Content Social Bookmarking                   What's this?

Vibration Control of a Suspension System via a Magnetorheological Fluid Damper

Smart Materials and Structures Laboratory, Department of Automation and Computer-Aided Engineering, The Chinese University of Hong Kong, Hong Kong

W.H Liao

Smart Materials and Structures Laboratory, Department of Automation and Computer-Aided Engineering, The Chinese University of Hong Kong, Hong Kong

Semi-active control systems are becoming more popular because they offer both the reliability of passive systems and the versatility of active control without imposing heavy power demands. It has been found that magneto-rheological (MR) fluids can be designed to be very effective vibration control actuators. The MR fluid damper is a semi-active control device that uses MR fluids to produce a controllable damping force. The objective of this paper is to study a single-degree-of-freedom suspension system with an MR fluid damper for the purpose of vibration control. A mathematical model for the MR fluid damper is adopted. The model is compared with experimental results for a prototype damper through finding suitable model parameters. In this study, a sliding mode controller is developed by considering loading uncertainty to result in a robust control system. Two kinds of excitations are inputted in order to investigate the performance of the suspension system. The vibration responses are evaluated in both time and frequency domains. Compared to the passive system, the acceleration of the sprung mass is significantly reduced for the system with a controlled MR damper. Under random excitation, the ability of the MR fluid damper to reduce both peak response and root-mean-square response is also shown.

Key Words: Vibration control • magnetorheological damper • semi-active • sliding mode

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				M. Cao, K.W. Wang, and K. Y. Lee Scalable and Invertible PMNN Model for MagnetoRheological Fluid Dampers Journal of Vibration and Control, May 1, 2008; 14(5): 731 - 751. [Abstract] [PDF]

				Y. Shen, M. F. Golnaraghi, and G. R. Heppler Semi-active Vibration Control Schemes for Suspension Systems Using Magnetorheological Dampers Journal of Vibration and Control, January 1, 2006; 12(1): 3 - 24. [Abstract] [PDF]

				D. H. Wang and W. H. Liao Semiactive Controllers for Magnetorheological Fluid Dampers Journal of Intelligent Material Systems and Structures, December 1, 2005; 16(11-12): 983 - 993. [Abstract] [PDF]