The Simulation Research Of The Vehicle Active Suspension Based On Matlab

With the rapid development of social technology and economy, people’s requirement on the vehicle’s ride comfort and road security is increasing. Suspension is one of the most important part of automotive transmission and drive control system. A good suspension can not only improve the car comfort, but also can improve the safety of driving. Active suspension develops with the modern control theory and electronic technique, its stiffness and damper coefficient can change to adapt the different work circumstances, is one of the most important direction in future research of automobile suspension system. It is significant to design a kind of suspension with good performance in modern automotive research.This thesis mainly has two research aspects:Active suspension simulation research and anti-roll simulation research.Research on active suspension simulation:First, set up a1/4vehicle active suspension of2DOF used to study the concept of the suspension design and control theory and control theory of the suspension. Secondly, establish Pavement white noise integral model and simulate it. Thirdly, design the fuzzy control rules for the road model. Finally build simulation model in Matlab/Simulink. In the end get simulation control results.Research on anti roll simulation:Firstly, Set up auto roll dynamics simulation model of the vehicle, used to study the tilt angle. Secondly build sub-models of dynamics simulation model and then derived the formula of these models. Thirdly, build simulation model in Matlab/Simulink. Finally, under different working conditions, research the parameters response on the handling stability simulation.