Abstract
Vibrations make the riding comfort and handling safety is worse in vehicle operating at high speeds. This research is conducted to demonstrate advantages of vehicle active suspension. This paper presents the design of a novel fuzzy control structure to improve stability of vehicles with semi-active suspension system. The effects of active suspension system on the acceleration of the sprung mass, dynamic tire load between wheels and road and dynamic deflection between the sprung mass and the unsprung mass have also been investigated. For two degree-of-freedom vehicle model, the simulation of vehicle performance in road signal is studied. To show the effectiveness of the proposed controller, comparison is made with the passive suspension system. Results show that the fuzzy controller can reduce effectively control the vibration of vehicle system.
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