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军用相变型光学头伺服方法的研究
引用本文:罗晔,陈海清,阮玉. 军用相变型光学头伺服方法的研究[J]. 华中科技大学学报(自然科学版), 1997, 0(4)
作者姓名:罗晔  陈海清  阮玉
作者单位:华中理工大学光电子工程系
基金项目:国家“八五”军事电子预研重点项目
摘    要:
对军用相变型光学头中所采用的聚焦和轨道伺服方法(即临界角法聚焦伺服和推挽法轨道伺服)进行了理论分析,建立了伺服信号的数学模型,并对伺服范围进行了讨论。根据军用要求,提出了改善伺服信号质量、拓宽伺服范围的方法。

关 键 词:相变型光学头,聚焦伺服,轨道伺服,线性补偿,伺服拓宽

On the Focusing and Tracking Servoes in a Military Optic Head of the Phase-Change Type
Luo Ye Chen Haiqing Ruan Yu. On the Focusing and Tracking Servoes in a Military Optic Head of the Phase-Change Type[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1997, 0(4)
Authors:Luo Ye Chen Haiqing Ruan Yu
Abstract:
The methods of focusing servo and tracking servo for use in a military phase-change optichead are analyzed.A mathematical model for the servo signal is developed and the servo range is dis-cussed.Based on an analysis of the military environment and requitements of military application,asecond-level reinforcing design scheme for the servo system is proposed.For the internal reinforce-ment,the multi-transmission method is adopted to improve the gain and the sensitivity of the servosignal of the focusing error,the processing circuits are used to compensate for the linearity of the de-tection signal and the method of widening the servo range is suggested.
Keywords:optic head of phase-change type  focusing servo(or focusing servo by critical anglemethod)  tracking servo(or push-pull tracking servo)  linear compensation  servo range
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