pid应用例子，非常好，说明参数如何配置，防止过冲，稳定速度快，很好用！-failed to translate fsddfg gfgfe fdgfd dfg dr sdfg ret hgfdf gfh

单自由度质量弹簧阻尼系统，受到单位阶跃激励，设置PID控制，给出合适的PID参数，使得系统的响应得到有效控制-Single degree of freedom mass-spring damping system, by the unit step excitation, set PID control, given the appropriate PID parameters such that the response system has been effectively controll

pid控制正确 但模糊pid参数调试一直有问题(active suspension PID controll)