Department of Production Engineering, PSG College of Technology, Coimbatore, India
The purpose of suspension system isto minimizethe vibration that is being transmitted to the passenger compartment of vehicle and thereby reinforce rider comfort. The traditional suspension system has fixed criteria for spring and damping. The performance of the suspension systemcan be improved by dynamically varying the stiffness and damping coefficient of the suspension system elements which can be achieved by introducing active suspension system. In this study, the performance of passive and active suspension system for a quarter-car model are analysed using MATLAB SIMULINK package.A Proportional Integral Derivative (PID) control, Fuzzy tunedPID control and Particle Swarm Optimization (PSO)tunedfuzzy control techniques are used to control the dynamic characteristics of the active suspension system. The characteristics of PSO rules areframed to reduce the sprung mass acceleration. The results showthat PSO tuned fuzzy controlapproach issignificantly improvingthe overall performance of the active suspension system.