光学精密工程2017，Vol.25Issue(3)：641-647,7.DOI:10.3788/OPE.20172503.0641
CO2探测仪反射镜组件设计
Design of mirror subassembly in CO2 sounder
摘要
Abstract
To lower the impact of thermal deformation due to gravity,mechanical test,launching environment and linear expansion coefficient difference of the material on mirror surface of the CO2 sounder,an analysis was conducted in material selection,structural design and cooperation mode of the mirror subassembly.In the analysis,SiC material was adopted for mirror making,and light weight design was carried out in the mirror body through finite element analysis based on ring-shaped support mode of the mirror;then invar materials with relatively small liner expansion coefficient were selected to design simple and reliable mirror support structure based on stability of the triangle structure and flexible structure of the bipod;the mirror and support structure formed a 1 ∶ 50 taper surface through epoxy resin adhesive.Then in strict process conditions,precise machining and assembly and mechanical test were conducted in the mirror subassembly.The results show that primary frequencies in the X direction,Y direction and Z direction are respectively 445 Hz,423 Hz and 444 Hz,approximate to results from the finite element analysis.After such test,the mirror surface shape variation PV is lower than 1/10λ,with a RMS value lower than 1/30λ (λ=632.8 nm).It proves that structural design and adjustment of the CO2 sounder mirror subassembly,which are reasonable,can meet the requirements of imaging spectrometer.关键词
轻型反射镜/轻量化/柔性支撑/力学试验Key words
light weighted mirror/light weight/flexible support structure/mechanical test引用本文复制引用
韦跃峰,蔺超,薛浩,郑玉权..CO2探测仪反射镜组件设计[J].光学精密工程,2017,25(3):641-647,7.基金项目
国家863高技术研究发展计划资助项目(No.2011AA12A102,No.2013AA122001,No.2015AA123801-02) （No.2011AA12A102,No.2013AA122001,No.2015AA123801-02）
