Optimal active suspension control based on a quarter-car model: An analytical solution

Shirjoposht N. P., Hassanzadeh I., Hashemzadeh F., Alizadeh G.

International Journal of Vehicle Safety, vol.5, no.1, pp.1-20, 2010 (Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 5 Issue: 1
  • Publication Date: 2010
  • Doi Number: 10.1504/ijvs.2010.035316
  • Journal Name: International Journal of Vehicle Safety
  • Journal Indexes: Scopus
  • Page Numbers: pp.1-20
  • Keywords: EKF, Extended Kalman filter, Non-linear model, Optimal active suspension control, Proportional integral sliding mode, Quarter model
  • Istanbul Technical University Affiliated: No


The objective of this paper is to present a new control technique for controlling of an active suspension system with hydraulic dynamics for a non-linear quarter-car model. An optimal law is developed for active suspension by the states estimation with Extended Kalman Filter (EKF) and then the states prediction of a non-linear quarter-car model. The states of quarter-car model are first estimated by EKF and then predicted by Taylor series expansion and finally a control law is introduced by minimising the local differences between the predicted and desired states. The effectiveness of the designed controller is compared with a proportional integral sliding mode controller. The simulations show that under the proposed controller, the car has good passenger comfort and safe manoeuvrability. Copyright © 2010 Inderscience Enterprises Ltd.