SIMULATION AND CONTROL OF ACTIVE SUSPENSION FOR A FULL CAR MODEL

Abstract

The active suspension system on the car is capable of adjusting the hardness
automatically, the mechanism working to meet the tilt chassis and controlling
vehicle speed when automobiles are turning on the uneven road, keeping sharp
with the brakes. The purpose is to give the car asuspension appropriately and
most effectively.The paper presents the application of LQR control algorithm to
control the positive suspension with the vertical plane oscillation model for the
whole car model. At the end of the paper, the author uses MATLAB-SIMULINK
software to simulate and compare the evaluation of the active LQR suspension
with passive suspension. Research results show some parameters: fluctuation
range; Time of quenching oscillation; The body movement acceleration of the
active suspension is better than the passive suspension.