Simulation of Automotive Active Suspension with Fuzzy Control

Automobile suspension affects the ability of inhibiting the impact of uneven road to body and gradient of body to automobile in the running process,and old suspension has poor ability of automatic adjustment and weak capability of antivibration.By analyzing the forcing characteristics of suspension,we built a mathematical model of two-degree of freedom active suspension model of a quarter of vehicle,and designed of fuzzy controller for vehicle active suspension for the above reasons combining the automatic control theory.Using the MATLAB/Simulink fuzzy toolbox,we designed fuzzy controller for the active suspension,and under the same input conditions,analyzed and compared some performance parameters of active suspension model and passive suspension model.The simulation result shows that active suspension with fuzzy controller is significantly better than the passive suspension on ride comfort and handling stability.Experiment shows that the study has certain reference value for the practical application of active suspension system.