Feedforward control was adopted in position loop and it improved performance.
系统中位置环采用前馈控制，提高了位置控制性能。
Double closed loop control is implemented with increment encoder through signal of speed and position.
采用增量式编码器，通过速度及位置信号进行双闭环控制。
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.
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。
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