Evaluation and Simulation of Semi-Active Suspension System by Modified Skyhook Control Theory Using Half Car Model using MATLAB/SIMULINK

In present work modified control theory is developed for semi-active control of suspension system for MU (Multi Utility) cars. A mathematical model for half car model is developed for passive suspension system. Modified skyhook control theory for control of damping coefficient for variable damper is included. Half car model is developed on MATLAB/SIMULINK for results comparison for passive and semi-active controlled suspensions system. Responses of passive suspension system and semi-active suspension system for defined road test profiles are compared from which it is concluded that semi-active suspension system give best result. It can be test for different type of road profile also. Maximum acceleration goes in passive suspension system is higher than in semi-active suspension system which may comes into range of shock tolerance of human body for comfort.