Title: Stability robustness of optimal active uncertain suspensions incorporating human sensitivity to vibration

Authors: Shinn-Horng Chen, Jyh-Horng Chou

Addresses: Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, 415 Chien-Kung Road, Kaohsiung 807, Taiwan. ' Department of Mechanical and Automation Engineering, National Kaohsiung First University of Science and Technology, 1 University Road, Yenchao, Kaohsiung 824, Taiwan

Abstract: In this article, the human sensitivity to vibration acceleration at various frequencies is incorporated in the design of active suspension by using the frequency-shaped linear-quadratic-Gaussian (LQG) method. And three new sufficient conditions of stability robustness for the frequency-shaped LQG active suspension systems subject to both disturbance/noise uncertainties and linear time-varying parameter perturbations are also presented in this article. The proposed new sufficient conditions provide a quantitative measure for automotive designers to design the frequency-shaped LQG active suspension systems with robustness properties. An illustrated example is given to demonstrate the applicability of the proposed new sufficient criteria.

Keywords: active suspensions; disturbance uncertainty; noise uncertainty; frequency-shaped LQG approach; human sensitivity; stability robustness; vibration acceleration; vehicle design; active suspension design.

DOI: 10.1504/IJVD.2004.005807

International Journal of Vehicle Design, 2004 Vol.36 No.4, pp.303 - 319

Published online: 07 Dec 2004 *

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