同时，利用转子的位置信号，还可以间接地计算出转速。
Simultaneously, rotor speed can be calculated indirectly by using the position signals.
采用增量式编码器，通过速度及位置信号进行双闭环控制。
Double closed loop control is implemented with increment encoder through signal of speed and position.
利用数字控制技术对位置信号误差角进行了实验检测及校正。
It has made experiment detection and rectification with signal control technology for the position signal error.
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