Modeling and simulation of automobile suspension system

This paper describes the mathematical model and simulation of controller for active suspension with Linear Quadratic Regulator (LQR) controller and about the improvement in performance. In this work, a controller is designed for active suspension system and simulated for both passive and active suspension system using SIMULINK in MATLAB. Two controller design approaches, namely conventional method (CM) and acceleration dependent method (ADM) have been examined for the active system. Results are graphical representation of various parameters like Passenger displacement and acceleration, RMS acceleration etc which shows active suspension system is more efficient than Passive system. From this simulation, we can say that system has better potential to improve both the ride comfort and road holding.