In the machining process stepping motor servo system is an important servo system.
在加工过程中，步进电机伺服系统是一种重要的伺服系统。
Position detection of rotor in hybrid stepping motor servo system can use traditional outside position sensor or sensorless scheme based on theoretical algorism, but there are many problems produced.
混合式步进电动机伺服系统转子的位置检测，可以用传统的外配位置传感器或基于理论算法的无位置传感器方案，但是存在许多问题。
Ac servo system in many performance is better than the stepping motor.
交流伺服系统在许多性能方面都优于步进电机。
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