focusing servo 聚焦伺服
auto-focusing servo 自聚焦伺服
automatic focusing servo 自动聚焦伺服
focusing and tracking servo 聚焦和循道伺服
Linear region automatic-search beforehand is an importantfunction of focusing servo system for various kinds of optical disk system .
线性区自动预搜索是各类光盘系统中聚焦伺服系统需要完成的重要功能。
参考来源 - 准线性区光盘聚焦自动预搜索机制的研究 An Investigation on Automatic Search Mechanism in Quasi·2,447,543篇论文数据，部分数据来源于NoteExpress
The optical writing object lens of the laser direct writing device must be focused in spots by a focusing-servo mechanism.
在激光直接写入设备中需要有高分辨力的调焦伺服机构对光刻物镜进行调焦伺服。
But to use SIL recording, the problems of the focusing servo and the dynamically flying height control of the SIL must be solved.
但是，固体浸没透镜光存储系统必须解决精密聚焦伺服问题和动态飞行高度控制问题。
The paper analyzes the principle of components of magneto optical disk driver focusing and tracking servo system, then designs and realizes a DSP based digital servo control system.
分析了磁光盘驱动器聚焦与循轨数字伺服系统各组成部分的原理，并设计和实现了一套基于DSP的数字伺服控制系统。
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