第18卷
第8期
2010年8月
文章编号
1004-924X(2010)08-1833-09
光学精密工程
Optics and Precision Engineering
Vol, 18No, 8
Aug.2010
空间光学遥感器反射镜柔性支撑的设计
王忠素"，翟岩"，梅贵"，江帆"，程志峰1.2
（1.中国科学院长春光学精密机械与物理研究所，吉林长春130033；
2.中国科学院研究生院，北京100039）
摘要：为降低光学遥感器反射镜在复杂且恶劣的空间环境下的面形误差，设计了一种柔性支撑结构，使反射镜在具有良好的热尺寸稳定性的同时结构刚度满足力学要求，针对某长圆形光学反射镜组件，通过设置柔性铰链的厚度、最薄处厚度和柔性铰链圆弧半径3个特征参数，对柔性铰链进行合理的结构设计。采用有限元法对反射镜组件在力热耦合状态下的面形精度和结构强度及结构的动态刚度进行伤真分析，结果表明，反射镜面形PV值由350.08nm降至59.03nm， RMS值由102.67nm降至9.11nm，柔性结构保证了反射镜的热尺寸稳定性，同时满足力学要求。最后，对反射镜组件的力热模拟件进行力学试验，得到的结果显示其3个方向的基频分别达到264Hz，290Hz和320Hz。这些结果表明，该柔性支撑结构设计方案是合理可行的。
关键调：空间逸感器；反射镜；柔性支撑；优化设计
中图分类号：V443.5;TH703
文献标识码：A
doi:10.3788/OPE,20101808.1833
Designofflexiblesupportstructureofreflectorinspaceremotesensor
WANG Zhongsu',ZHAI Yan',MEI Gui',JIANG Fan', CHENG Zhi-feng'-2
(1.Changchun Institute of Optics,Fine Mechanics and Physics, ChineseAcademy of Sciences,Changchun 130033,China;
2.GraduateUniversity of Chinese Academy of Sciences,Beijing 100039,China)
Abstract: To reduce the surface deformation of a remote sensor reflector in complex and execrable space environments, a flexible support structure was designed. By defining the thickness, width and radius as design variables, the flexible hinge in an oblong reflector subassembly was optimized. Then, the surface figure precision, structural strength and dynamic stiffness of the reflector subassembly in the thermal-structural coupling state were analyzed with finite element method. Simulation results show that the maximum PV value is decreased to 59. 03 nm from 350. 08 nm, the maximum RMS val-ue is decreased to 9. 11 nm from 102. 67 nm and the thermal dimensional stability is ensured by pro posed flexible structure, Finally, the thermal-structural simulation subassembly was subject to a me chanical test,and results indicate that the fundamental frequencies of the component in three directions are 264 Hz, 290 Hz and 320 Hz,respectively. Analysis and test results demonstrate that the flexible support structure is reasonable
Key words: space remote sensor; reflector; flexible support; optimum design
收稿日期：2009-11-16；修订日期：2010-01-14.
基金项目：国家自然科学基金资助项目（No.60507003）