Position control is one of the motion control , it requires high control precision and high trace speed , so how to improve the dynamic characteristic and how to reduce the contour error of the system are the keys of the control 位置控制是運(yùn)動(dòng)控制的一種,它要求較高的控制精度和跟蹤速度,因此如何提高系統(tǒng)的動(dòng)態(tài)特性和減小系統(tǒng)的輪廓誤差是控制的關(guān)鍵所在。