The system is a combined close loop system with forword feed control device. It can resolve the contradiction between stability and steady accuracy, and rise the control accuracy.

该系统是一种带前馈环节的复合闭环系统，它解决了稳定性与稳态精度的矛盾，提高了控制精度。

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A high precision feed table and control system were developed to drive the optical head in a disc mastering device.

为实现母盘刻录机中光学头的精密进给，研制了精密微进给工作台及其伺服控制系统。

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Its control device is comprised of processing tool, energy sensor, temp. sensor, addition apparatus, regulating valve, low temp. liquid generator, and forward feed and feedback controllers.

其控制装置由加工工具、能量传感器、温度传感器、加法器、调节阀、低温液体发生器以及前馈控制器和反馈控制器组成。

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