Modeling and Control of a half Car Active Suspension System using Sliding Mode Controller and Linear Quadratic Regulator Controller

Abstract

This paper illustrates the use of two distinct control strategies. Namely, the Sliding Mode Control (SMC) and a Linear Quadratic Regulator (LQR) controller to monitor and handle the suspension system vibrations that occurred. We used a half car suspension model with (4DOF). The necessary suspension performance attributes, such as ride comfort, suspension deflection and car handling require a comprehensive control system. Three components make up this control system, which is carried out using the MATLAB application: the controller, the suspension system model, and input signals (road profile and actuator force). A comparison of the half car active suspension system LQR and SMC controllers as well as the uncontrolled suspension system is presented.