真实路面的函数可以描述为路面不规则函数q=q(x,y)，其x和y坐标轴分别表示纵向和侧向轴。路面不平度被描述成具有高斯分布、稳态阶段、遍历性和零均值的随机过程。因此我们可以利用自己定义的单个轨迹和相干函数的二平行轨迹的功率谱密度来描述路面不平度。自定义的单轨迹功率谱密度可用如下方程描述：-In ride comfort research, it is important to simulate the vibration of automobile on uneven road. To buil

Optimization of Passive Suspension System for Enhancement of Ride Comfort

做汽车的平顺性分析时用到的路面文件，自己编了几个，可供下载(The road documents used in the ride comfort analysis of automobiles are compiled by themselves, which are available for download.)