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。
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.
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。
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 focus of this dissertation includes the Servo System hardware design and software design.
本文的重点主要包括稳定平台伺服控制系统的硬件设计和软件设计。
The paper mainly focus on the experimental research on pneumatic on-off valve motor position servo control system with PCM control method and self-adjusting PID algorithm.
文章主要研究的内容为利用PCM控制技术，采用自适应PID控制算法，对开关阀式气动马达位置伺服系统进行实验研究。
Virtual instrument technology is introduced, with the focus of discussion on the prospect of its application in the hydraulic servo control system.
从介绍虚拟仪器技术着手，着重探讨了虚拟仪器在液压伺服控制系统中的应用前景。
Virtual instrument technology is introduced, with the focus of discussion on the prospect of its application in the hydraulic servo control system.
从介绍虚拟仪器技术着手，着重探讨了虚拟仪器在液压伺服控制系统中的应用前景。
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