基于MATLAB的汽车操纵稳定性分析

文章利用MATLAB软件强大的计算能力和绘图功能,通过建立汽车操纵稳定性分析模型,对汽车稳态响应和前轮角阶跃输入下的瞬态响应进行了求解分析。结果表明：轮胎的侧偏刚度（绝对值）越大,汽车的操作稳定性就越好;横摆角速度的固有频率越高越好;稳定性因素K应小于0,使汽车有适度的不足转向,有利于行车安全。

Analysis based on Vehicle Handling Stability

By using the computation and graphing function of MATLAB,the article builds a vehicle handling stability model to perform analysis on vehicle steady state response and transient response with a step input of the front wheel.The result shows that the higher the frequency of yaw velocity is better and the bigger the absolute value of cornering stiffness to make,the better the handling stability.The stability index K should be smaller than 0,so the vehicle has appropriate understeering for the save driving.