小型反射镜中心支撑技术  

Support technique in centre of minitype reflector

作　　者：谭进国[1,2] 何欣[1] 付亮亮[1] 

机构地区：[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

出　　处：《红外与激光工程》2010年第6期1070-1074,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金资助项目

摘　　要：所述空间遥感器反射镜的工作温度为18±15℃,要求反射镜在此复杂工况条件下满足设计要求。介绍了反射镜材料和支撑结构材料的选择;对反射镜的支撑方式、轻量化等方面进行了分析讨论;根据反射镜柔性支撑结构的设计原理,采用CAD/CAE工程软件进行了分析及优化,通过有限元法优化设计了一种反射镜中心支撑的柔性结构,在此温度变化范围内,反射镜面形误差变化量PV值小于λ/10、RMS值小于λ/40(λ=632.8 nm)。最后,通过力学环境实验测试反射镜面形变化量和反射镜组件模拟件的动态特性,证明该结构满足设计要求。The working temperature of space remote sensor reflector is 18±15 ℃ in this article,and the reflector in the complex working condition needs to meet the design requirements.The choices of the reflector materials and the supporting structure materials were introduced.The supporting way and the lightweight structure of the reflector and so on were discussed.According to the design principles of the flexible supporting structure of the reflector and using CAD/CAE engineering software for analysis and optimization,a kind of reflector flexible structure of centre support was designed by means of finite element method（FEM）.Surface deformation less than λ/10（PV） and λ/40（RMS）（λ=632.8 nm）in this temperature range.Finally,the changes of reflector surface deformation and the dynamic characteristic of reflector component simulators were tested by the mechanical environment test.The conclusion is proved that the structure of the reflector meets the demand of the optical design.

关 键 词：中心支撑 小型反射镜 柔性结构 

分 类 号：TH122[机械工程—机械设计及理论]