【摘要】 本文介绍了电动机控制所经历的三个时期，并说明运动控制三个组成部分的显明时代特点以及同步电动机在运动控制中所处的显赫地位。更多还原

【Abstract】 In this paper, the three development periods of motion control are introduced. Then three componentsof motion control which haveobvious characteristic of the age are explained, Finaly the powerful and influential position of synchronous motor in the motion control is discussed.更多还原