The servo control system combines position loop, speed loop, current loop with algorithm of space vector pulse width modulation(SVPWM).

系统采用位置、速度和电流环三环控制，并结合空间矢量脉宽调制（SVPWM）算法。

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The servo loops include speed control loop and position control loop plus feed-forward control, therefore the system is a compound control system.

该伺服系统包括速度环和位置环以及前馈控制，因此该系统是一个复合控制系统。

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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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