Vehicle Active Suspension Study Based On Matlab Simulink

The active suspension system and its control method are always being concerned in the field of vehicle technology. Active suspensions with efficient control strategy means a lot to the safety and stability of the cars. Therefore, the research of active suspension control strategies is.a significant subject today.Based on the suspension model chosed, and the road input, we study the dynamic characteristics. Then we set up models of passive suspension, suspension with optimal control, suspension with fuzzy control and that with combined control in the simulink environment. Through the simulation on the models, we can demonstrate the feasibility of the ideas.The results shows that, the dynamic characteristics of the model wo chosed can meet the requirements of frequency;compared with passive suspension, dynamic deflection of optimal control is reduced by 20 pencent; the acceleration of suspension with fuzzy control is reduced by 33.13 pencent. As with ones with combined control, the two parameters reduce by 33.3 pencent and 42.75 pencent respectively, that shows the effectivity of the control ideas.