汽车四自由度系统模型仿真。包括车身垂直振动，俯仰振动，前轴振动，后轴振动对前后车轮的影响。(Simulation of Four - Degree - of - Freedom System Model. Including the vertical vibration of the vehicle body, pitch vibration, front axle vibration, rear axle vibration on the front and rear wheels.)

对汽车七自由度的模型振动进行matlab仿真分析。(The model vibration of automobile with seven degrees of freedom is simulated and analyzed by matlab.)