Optimal control based intelligent controller for active suspension system

Abstract

Suspension systems play a vital role in providing comfortable and safe vehicle ride. This paper proposes a controller that is developed by combining optimal control and intelligent control techniques to minimize the vehicle’s body vertical displacement. The actuator control force is also reduced through this integration. The numerical simulation results have been provided for the non-linear quarter vehicle suspension system using MATLAB/SIMULINK. The comparison between uncontrolled suspension systems, Linear Quadratic Regulator Controller based active suspension system, and active suspension system using Optimal Control based Intelligent Controller are presented and thoroughly explained. Keywords: Active suspension system, Linear quadratic regulator (LQR) Controller, Optimal control based intelligent controller, MATLAB/SIMULINK