This paper introduces several methods to reduce error of step by step motor open loop servo system in numerical controlled machine tools.
本文介绍了减少数控机床步进电机开环伺服系统误差的几种方法。
The control principle of step motor is exposed, drive control of feed system is carried out by use of motion controller, meanwhile, dot motion control of step motor is also carried out by use of PLC.
阐述了步进电机控制原理，利用运动控制器实现了进给系统的联动控制，利用PLC实现了步进电机的点动控制。
Studies of a series of cigarette machines of advanced industry countries, a machine equipped with many frequency conversion synchronous motors and step-by-step motor etc.
先进工业国家的现代烟草机械常常是一台机械上装备有一系列变频调速同步电动机与步进电动机等。
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