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.
实验表明：双闭环的永磁数字交流伺服系统拥有很高的速度和位置控制性能。
Experiments show that the two-loop Servo System has good performances in speed and position control.
实验表明：双闭环的永磁数字交流伺服系统拥有很高的速度和位置控制性能。
Experiments show that the two-loop Servo System has good performances in speed and position control.
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