DYNAMIC ANALYSIS OF ACTIVE SUSSPENTION SYSTEM FOR1/4 MODEL VEHICLE USING PID AND LQR CONTROLLER

Abstract

This paper presents the results of simulating the performance of the active suspension system for the ¼ vehicle model using a linear controller (LQR) and proportional derivative control (PID). The linear model is used for the research. Simulation results allow to evaluate the dynamic parameters of the suspension system such as: Body displacement; Body acceleration; Wheel displacement; Suspension travel. Two types of road profiles are applied for survey and compare, in combination with two control algorithms in simulation. Through the construction of mathematical models and application of MATLAB/SIMULINK software for simulation, the results of the article show that with LQR and PID control algorithms applied for the active suspension system will allow reducing 2-3 times the time to extinguish the oscillation of the suspension system.