| 光学头二维力矩器的三自由度动力学模型研究 |
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| 引用本文： | 汝继刚,马建设,潘龙法,王蓓.光学头二维力矩器的三自由度动力学模型研究[J].光学技术,2007,33(2):199-201. |
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| 作者姓名： | 汝继刚 马建设 潘龙法 王蓓 |
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| 作者单位： | 1. 清华大学,光盘国家工程研究中心,北京,100084
2. 飞利浦(中国)投资有限公司上海研究中心,上海,200000 |
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| 摘 要： | 力矩器多维运动间的串扰和耦合是影响其动态特性和光斑质量的关键因素。针对力矩器单自由度简谐振动模型的不足,利用拉格朗日第二类方程,建立了二维力矩器的三自由度动力学模型,描述了力矩器聚焦和循迹有效运动、聚焦和循迹运动间的耦合作用以及扭转串扰运动特性,反映了力矩器四个关键点的不一致对其动态特性的定量影响。模型与实验结果对比表明,各自由度误差均小于5%,模型具有实用性,对力矩器的设计开发和串扰抑制具有理论指导作用。
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| 关 键 词： | 光学头 力矩器 扭转特性 串扰 耦合 |
| 文章编号： | 1002-1582(2007)02-0199-03 |
| 收稿时间： | 2006/5/31 |
| 修稿时间： | 2006年5月31日 |
Study on 3-DOF kinetic model of 2-D actuator in optical pickup |
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| RU Ji-gang,MA Jian-she,PAN Long-fa,WANG Michelle.Study on 3-DOF kinetic model of 2-D actuator in optical pickup[J].Optical Technique,2007,33(2):199-201. |
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| Authors: | RU Ji-gang MA Jian-she PAN Long-fa WANG Michelle |
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| Abstract: | The cross interference in motions of optical pickup actuator is the key factor to affect the dynamic characteristics and quality of optical spot.Because of the shortcomings of single DOF resonant model of actuator,the 3-DOF kinetic model for 2-D actuator is set by 2nd Lagrange equation.The effective focusing and tracking motions,the coupling between focusing and tracking motions and the characteristics of rolling interference motion are described by this model.It also reflects the quantitative influence of the inconsistency of actuator's four key points on dynamic characteristics.Experiment shows that the error of this model is less than 5%.The study is important for design of actuator and analysis of interference. |
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| Keywords: | optical pickup actuator rolling characteristics cross interference coupling |
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