This paper makes study on fuzzy logic controlled semi active suspension system. Quarter Car Model (2-DOF) is developed and simulation models are prepared in MATLAB/SIMULINK software. Input parameters for model simulation are taken from literature available and disturbances required checking for performances used here are step input, sine input from literature. Simulation of passive suspension and semi active suspension is done and their performances are compared by comparing displacement, velocity, acceleration, ride/comfort, handling plots. Fuzzy logic control is applied for semi active suspension to reduce compromise between ride and handling. Different membership function and rules are decided to get effective fuzzy control performance.
