Abstract
Based on the semi-active suspension system with variable stiffness and damping, the full vehicle model was established in Adams/Car software, which included front suspension and rear suspension with variable stiffness and damping, steering system, car body and tires model. The variable universe fuzzy controller of semi-active suspension was designed according to variable universe fuzzy theory, which was compared with the traditional fuzzy controller. The co-simulation model was built by Matlab/Simulink and Adams/Car software. Then the model was simulated and analyzed in the inputs of random road and roof road. The results of the co-simulation show that, compared with the full vehicle model with passive suspension, the full vehicle model with variable stiffness and damping semi-active suspension effectively reduced the vibration of car body and improved the vehicle ride quality, and the variable universe fuzzy controller is better than the traditional fuzzy controller in decreasing vibration.
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