Abstract
For the traditional vehicle suspension, it is generally not easy to improve the ride performance in various roads. In this paper, taking the ride comfort and road handing as system control objective, the system control mechanism is discussed. To improve vehicle comfort and road holding capability, a novel adjustable fuzzy control algorithm which fuzzy control rule table can be obtained with the numerical calculation is advanced. It not only can reflect the advantage of fuzzy logic but also can improve the disadvantage of common fuzzy control method strongly depending on the experience. Based on adjustable fuzzy controller, a model of active suspension is established. For two degree-of-freedom vehicle model, the simulation of vehicle performance in road signal is studied, its results show the adaptive fuzzy controller can effectively control the vibration of vehicle system and reduce the acceleration of the sprung mass by a factor of 20. So the effect of the active suspension control law is remarkable.
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