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基于展开式望远镜的次镜调整结构设计

发布日期:2014-06-01| 阅读次数: | 关键字:37-3 | 作者:于夫男,王刚,许博谦,王磊 | 来源:长春理工大学学报:自然科学版 2014 Vol.37(3): 027-031

基于展开式望远镜的次镜调整结构设计

于夫男,王刚,许博谦,王磊
(中国科学院长春光学精密机械与物理研究所,长春 130033)

摘要:次镜作为展开式望远镜系统的重要光学组成部分,其位置姿态精度直接影响着成像质量的优劣;针对展开式望远镜系统次镜的五自由度位姿调整性能及精度要求,设计了一套由二自由度调节平台与三自由度倾斜调节机构组成的五自由度调整机构,将压电驱动下的柔性微动机构应用于对次镜XY 向的精密调节之中;利用理论建模与有限元工程分析相结合的研究方法对压电精密驱动柔性平台动态驱动特性、承载性能进行分析;结果表明,所设计的五自由度调整平台能够满足次镜所需调节精度要求,具有实际意义。
关键词:五自由度;二自由度调节平台;三自由度倾斜调节平台;柔性平台
中图分类号: TH743            文献标识码:A            文章编号:1672-9870(2014)03-0027-05


Design of Five-Degree of Freedom Adjustment Mechanism of Secondary Mirror of Deployable Telescope

YU Funan,WANG Gang,XU Boqian,WANG Lei
(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033)
 
Abstract:The secondary mirror is one of the most important part of deployable telescope,It’s position precision directly affects the image quality,according to the requirement of performance and precision of five DOF adjustment mechanism of secondary mirror of telescope system.In this paper,five-degree of freedom adjustment mechanism is designed consisting of two degree of freedom adjusting platform and three degree of freedom mechanism which is used to adjust tilt。Fine flexible platform being driven by PZT is used to XY precision adjustment of secondary mirror,dynamic characteristics and bearing characteristics of flexible platform being driven by PZT is analyzed according to using research method of combination of theory modeling and finite element analysis。The results showed that the designed adjustment mechanism can meet the adjustment precision requirement of secondary mirror and have practical significance.
Key words:five DOF;two DOF adjusting platform;three DOF adjusting mechanism;flexible platform

基金项目:中国科学院长春光机所创新项目[O8133XQ080 (CXJJ-235)]
作者简介:于夫男(1986-) 男,硕士,实习研究员,E-mail:847378033@qq.com

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