Dynamical performance analysis of vehicle active suspension based on adaptive fuzzy method

The dynamical performances of vehicle are regarded as control aims. With the nonlinearity of the road-vehicle system, a fuzzy control algorithm which fuzzy control rule table can be obtained with the numerical calculation is advanced. Because the algorithm can adjust the rectification factor of fuzzy controller, it not only can reflect the advantage of fuzzy logic in nonlinearity system but also can improve the disadvantage of common fuzzy control method. For two degree-of-freedom vehicle model, vehicle dynamical performances are studied; its results show the fuzzy controller can reduce the acceleration of the sprung mass. According to the experiment study of vehicle model, the results further prove that the active suspension system with adaptive fuzzy method can control effectively acceleration of sprung mass in concerned frequency band. The algorithm can effectively control the vibration of vehicle system.