Robust feedback control of a full-car ER suspension system

Seung-Bok Choi; Y. T. Choi; D. W. Park; H. G. Lee; Myoung-Seok Suh; Muyong Shin

doi:10.1117/12.316913

27 July 1998 Robust feedback control of a full-car ER suspension system

Seung-Bok Choi, Y. T. Choi, D. W. Park, H. G. Lee, Myoung-Seok Suh, Muyong Shin

Proceedings Volume 3329, Smart Structures and Materials 1998: Smart Structures and Integrated Systems; (1998) https://doi.org/10.1117/12.316913
Event: 5th Annual International Symposium on Smart Structures and Materials, 1998, San Diego, CA, United States

Abstract

This paper presents a robust feedback control performance of a full-car suspension system featuring electro-rheological (ER) dampers for a passenger vehicle. The field-dependent yield stress of an ER fluid is obtained using a couette type electroviscometer, and a cylindrical ER damper is designed and manufactured by incorporating the yield stress of the ER fluid. A full-car suspension system installed with four independent ER dampers is then constructed and its governing equation of motion which includes vertical, pitch and roll motions is derived. A sliding mode controller which has inherent robustness against parameter uncertainties is then formulated by taking account of mass uncertainty. Control characteristics for vibration suppression of the ER suspension system are evaluated under various road conditions through the hardware-in-the-loop simulation for the demonstration of its practical feasibility.

Citation Download Citation

Seung-Bok Choi, Y. T. Choi, D. W. Park, H. G. Lee, Myoung-Seok Suh, and Muyong Shin "Robust feedback control of a full-car ER suspension system", Proc. SPIE 3329, Smart Structures and Materials 1998: Smart Structures and Integrated Systems, (27 July 1998); https://doi.org/10.1117/12.316913

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