The output of this correction signal can be used to drive a simple auto-focus servo.
修正信号的输出可以用于驱动一个简单的自动聚焦伺服器。
The focus servo system of the OM is analyzed and the mathematical model of the voice-coil motor is presented.
介绍了光电测微系统的基本原理及其构成，分析了该系统的关键环节即聚焦伺服系统，建立了音圈电机的数学模型。
In DVD focus servo system, the skew of the disc induces periodic disturbance whose frequency is the same with the rotation frequency of the disc.
在DVD聚焦伺服系统中，光盘翘曲会导致产生与光盘转动频率相同的周期性扰动。
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