Sliding modes control of active suspensions

In the first part of this study, a sliding mode based controller has been mounted on a multi degrees of freedom vehicle model as parallel to the suspensions and a non-chattering control has been realized using system equations. In the case of traveling on different road profiles, body bounce, body pitch, acceleration of the body, time response of the vehicle, control inputs phase plane of the motion and frequency response of the vehicle have been obtained. The simulation results have been compared with the uncontrolled system results. At the end of the study the performance of the controller and the improvement in the system performance have been discussed by also considering the ride comfort.