反馈系统包含了跟踪误差的未来信息，以便改善发电机的跟踪速度和控制效果。
To improve the tracking speed and control effects of the generator, the feedback system includes indirectly the future information of the tracking errors.
该系统的速度反馈元件采用测速发电机，角度测量元件采用光电编码器。
Measuring generator is used for velocity feedback in this system, and photoelectricity coding component is used for Angle measure.
结果，由于感应电动机为发电机，功率流将反向，拖动系统的动能将被反馈回电网。
As a result, the generating action of the induction machine will cause the power flow to reverse and the kinetic energy of the drive system will be fed back to the supply.
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