Citation

Ma F, Men Y, Du Z. Int. J. Veh. Des. 2008; 47(1/2/3/4): 102-117.

Copyright

(Copyright © 2008, Inderscience Publishers)

DOI

10.1504/IJVD.2008.020882

PMID

unavailable

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.