Parametric uncertainty analysis of vehicle suspensions
by Fangwu Ma, Yongxin Men, Zixue Du
International Journal of Vehicle Design (IJVD), Vol. 47, No. 1/2/3/4, 2008

Abstract: To improve the vehicle ride and handling, parametric uncertainty in active suspension systems is addressed. A numerical model with parametric uncertainty is proposed and its state equations derived. Robustness analyses are carried out based on a quarter vehicle model. The H_∞ controller is shown to provide the best control strategy in terms of stability and performance robustness. Optimised control approaches are studied using the quarter vehicle application. The effects of parameter variation are examined in frequency and time domains. The results show that H_∞-based control is the best with regards to body acceleration, dynamic tyre deflection and suspension deflection.

Online publication date: Wed, 22-Oct-2008

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