Quarter Car Active Suspension System Design Using Optimal and Robust Control Method

Abstract

This paper offers with the theoretical and computational evaluation of optimal & robust control problems, with the goal of providing answers to them with MATLAB simulation. For the robust control, -synthesis controller and for the optimal control, LQR controller are designed for a quarter car active suspension system to maximize the ride comfort and road handling criteria’s of the vehicle. The proposed controllers are designed using Matlab script program using time domain analysis for the four road disturbances (bump, random sine pavement and white noise) for the control targets suspension deflection, body acceleration and body travel. Finally the simulation result prove the effectiveness of the active suspension system with -synthesis controller. Keywords : Quarter car active suspension system, optimal control, robust control, linear quadratic regulator DOI: 10.7176/IEL/10-2-04 Publication date: March 31 st 2020