An Investigation on Vehicle Active Suspension and Anti-Lock Braking System Coordination Control

Abstract

This paper made an investigation on the coordinated control scheme of vehicle anti-lock braking system (ABS) and vehicle active suspension. The objective of this investigation is to obtain the maximum braking force on the road and to minimize the stopping distance and meanwhile maintain vehicle directional stability and maintain ride comfort. The controller was designed by using the fuzzy model control theory and was implemented under the Matlab/Simulink software environment. A 7-DOF-vehicle model was used to consider the influences of the non-linearity of tire and suspension. The simulation tests were carried out in various conditions. The action of the ABS combined with active suspension and the effects of applied suspension force on braking performances were examined. The simulation results show that for a particular vehicle there exists an optimal application of the suspension force. Compared with an ABS system without combing active suspension, the proposed control scheme can improve braking performance significantly.