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。
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.
为了提高DVD聚焦伺服系统的控制精度和响应速度需要加入控制器，提出了一种新的校正算法。
We need to add the controller in order to enhance the control precision and response speed of DVD focus servo system, and then a new emendation arithmetic was put forward.
采用短波长激光光源是实现高密度光存储的一种有效途径，但是对聚焦伺服系统提出了更高的要求。
It is available to improve optical storage density by using short wavelength laser, but a harder focusing servo system is need.
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。
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。
This paper deals with the open system of numerical control based on Windows98, mainly discussing the interface module , the manage module and the servo module.
分析了DVD聚焦伺服系统中音圈电机和光头拾取器的数学模型，通过实验测定其模型参数，完成了DVD聚焦伺服系统的建模，并进行了仿真。
The model of voice coil motor and optical pickup unit are analyzed, the model parameters are tested, the model of DVD focus servo system is built and the simulation is carried out.
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。
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。
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.
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