Objective lens, optical pickup device, recorder and reproducer.
物镜，光学拾取器，记录器和重现设备。
The cross interference in motions of optical pickup actuator is the key factor to affect the dynamic characteristics and quality of optical spot.
力矩器多维运动之间的串扰是影响其动态特性和光斑质量的关键因素。
The working principle of optical pickup and the measuring principle of rotation shaft torque using optical pickup and photoelectric method are introduced in this paper.
本文介绍了激光读出头的工作原理，提出了一种采用激光读出头、运用光电方式对转轴扭矩进行测量的原理。
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 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。
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