一种新型的磁悬浮四维物镜力矩器  

A novel 4-axis magnetic suspension objective lens actuator

作　　者：王晓娜[1] 吴石增[1] 巩马理[2] 黄磊[2] 

机构地区：[1]中国科学院电工研究所,北京100080 [2]清华大学,北京100084

出　　处：《电工电能新技术》2002年第3期70-72,76,共4页Advanced Technology of Electrical Engineering and Energy

摘　　要：数字光盘的发展对光学头的性能要求越来越高 ,而现有的二维物镜力矩器只能实现聚焦和寻迹 ,不能对光盘倾斜进行补偿。本文介绍了一种新型四维物镜驱动力矩器结构 ,可以实现聚焦、寻迹、以及跟踪光盘倾斜角的四维运动。实验证明 ,该四维力矩器可实现小角度偏转 ,并且倾角与线圈电流之间具有良好的线性关系。With the development of the digital disc, an optical pickup head with better performance is required. In this paper, a four-axis magnetic suspension lens actuator, which can not only track and focus but also compensate the tilt angle of the disc, is developed. The experimental results show that the new actuator can achieve small tilt angel and the tilt angle is linear with the current of the coils.

关 键 词：磁悬浮四维物镜力矩器 数字光盘 光学头 数据传输速率 

分 类 号：TP333.4[自动化与计算机技术—计算机系统结构]