快反系统中平面反射镜的轻量化设计

徐新行; 王兵; 乔健; 刘长顺; 时魁

doi:10.3788/CO.20120501.0035

快反系统中平面反射镜的轻量化设计

doi: 10.3788/CO.20120501.0035

中国科学院长春光学精密机械与物理研究所,吉林长春 130033

基金项目:

中国科学院长春光学精密机械与物理研究所三期创新工程资助项目(No.057X22C050)

详细信息

作者简介:
徐新行(1983-),男,河南沈丘人,助理研究员,硕士,主要从事光机结构方面的设计与研究。 E-mail:xxh123321xxh@163.com

中图分类号: TH703
计量
- 文章访问数: 3704
- HTML全文浏览量: 531
- PDF下载量: 1051
- 被引次数: 0
出版历程
- 收稿日期: 2011-10-21
- 修回日期: 2011-12-23
- 刊出日期: 2012-02-10

Lightweight design of mirror in fast-steering mirror system

Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

摘要

摘要: 根据快速控制反射镜系统(快反系统)对平面反射镜的设计要求,对快反镜的轻量化结构进行了优化设计。选择比刚度大、热变形系数小的碳化硅为镜坯材料,采用背部开槽式结构减重,背部3点式支撑,对不同筋宽和镜面厚度等多种轻量化方案进行了有限元分析。结果表明:筋宽越大,镜体刚度越好,但筋宽增大到一定程度时,反射镜刚度的改善程度减缓;镜面越厚,镜体内应力、自重变形越大。结合反射镜设计要求和有限元分析结果,加工制备了筋宽为4 mm,镜面厚度为4 mm的碳化硅反射镜,镜体轻量化率达55%。实测反射镜的面形精度,其RMS值不超过/30,与分析结果相符,满足系统的使用要求。
- 快速控制反射镜 /
- 轻量化 /
- 有限元分析 /
- 碳化硅
Abstract: The lightweight structure of a mirror in the Fast-steering Mirror(FSM) System was designed. Due to the high specific stiffness and low thermal deformation rate, SiC was used as a raw material to prepare the mirror. The lightweight mirror with a notched structure was supported by three points on the back. Several lightweight structures were analyzed by finite element method. The results show that the rigid of mirror increases with the width of rib. When the rib is wide enough, the rigid of mirror increases slightly. The stress and deformation of mirror caused by gravity increases with mirror thickness. Structure parameters of 4 mm rid and 4 mm mirror thickness are confirmed considering current mechanical manufacture process. The lightweight rate of mirror is 55%. The RMS value of mirror measured by Zygo interferometer is less than /30, which is in agreement with that of the analysis.
- fast-steering mirror /
- lightweight /
- finite element method /
- silicon carbide

HTML全文

参考文献(1)

[1] 鲁亚飞,范大鹏,范世珣,等. 快速反射镜两轴柔性支承设计[J]. 光学精密工程,2010,18(12):2575-2581. LU Y F,FAN D P,FAN SH X,et al.. Design of two-axis elastic support for fast steering mirror[J]. Opt. Precision Eng.,2010,18(12):2575-2581.(in Chinese) [2] MORGAN F E,WASSONA S R,LONDON J J,et al.. Large, high performance, fast steering mirrors with FPGA-embedded controls[J]. SPIE,2009,7466:74660H-1. [3] 徐新行,王兵,韩旭东,等 .音圈电机驱动的球面副支撑式快速控制反射镜设计[J]. 光学精密工程,2011,19(6):1320-1325. XU X H,WANG B,HAN X D,et al.. Design of fast-steering mirror with spherical pair supporting structure driven by voice coil actuators[J]. Opt. Precision Eng.,2011,19(6):1320-1325.(in Chinese) [4] 国绍文,王武义,张广玉,等 .空间光学系统反射镜轻量化技术综述[J]. 光学仪器,2005,27(4):78-82. GUO SH W,WANG W Y,ZHANG G Y,et al.. Lightweight mirror technology for space optical systems[J]. Opt. Instruments,2005,27(4):78-82.(in Chinese) [5] 周超,杨洪波,吴小霞,等 .地基大口径望远镜结构的性能分析[J]. 光学精密工程,2011,19(1):138-144. ZHOU CH,YANG H B,WU X X,et al.. Structural analysis of ground-based large telescopes[J]. Opt. Precision Eng.,2011,19(1):138-144.(in Chinese) [6] 闫勇,金光,杨洪波. 空间反射镜结构轻量化设计[J]. 红外与激光工程,2008,37(1):97-101. YAN Y,JIN G,YANG H B. Lightweight structural design of space mirror[J]. Infrared and Laser Eng.,2008,37(1):97-101.(in Chinese) [7] 陈夫林,张景旭,吴小霞,等. 620 mm薄镜面的主动支撑结构及面形校正[J]. 光学精密工程,2011,19(5):1022-1029. CHEN F L,ZHANG J X,WU X X,et al.. Supporting structure of 620 mm thin primary mirror and its active surface correction[J]. Opt. Precision Eng.,2011,19(5):1022-1029.(in Chinese) [8] 刘辉,于清华,裴云天. 大口径反射镜轻量化结构比较及面形分析[J]. 光电工程,2009,36(11):70-74. LIU H,YU Q H,PEI Y T. Light-weighted structure contrast and deformation analysis of the large mirror[J]. Opto-Electronic Eng.,2009,36(11):70-74.(in Chinese) [9] 刘秀敏,何斌,沙巍,等 .空间相机主反射镜的拓扑优化设计[J]. 中国光学与应用光学,2010,3(3):239-244. LIU X M,HE B,SHA W,et al.. Topological lightweight design of primary mirror in space camera[J]. Chinese J. Optics and Appl. Optics,2010,3(3):239-244.(in Chinese) [10] YODER Jr P R. Opto-Mechanical Systems Design[M]. 3rd ed. Bellingham:SPIE Press,2006. [11] 王忠素,翟岩,梅贵,等 .空间光学遥感器反射镜柔性支撑的设计[J]. 光学精密工程,2010,18(8):1833-1841. WANG ZH S,ZHAI Y,MEI G,et al.. Design of flexible support structure of reflector in space remote sensor[J]. Opt. Precision Eng.,2010,18(8):1833-1841.(in Chinese) [12] 曾勇强,傅丹鹰,孙纪文,等. 空间遥感器大口径反射镜支撑结构型式综述[J]. 航天返回与遥感,2006,27(2):18-23. ZENG Y Q,FU D Y,SUN J W,et al.. Summary of support structure patterns of large mirror for space remote sensor[J]. Spacecraft Recovery & Remote Sensing,2006,27(2):18-23.(in Chinese) [13] 李志来,徐宏. 长条形空间反射镜及其支撑结构设计[J]. 光学精密工程,2011,19(5):1039-1047. LI ZH L,XU H. Design of rectangular space mirror and its support structure[J]. Opt. Precision Eng.,2011,19(5):1039-1047.(in Chinese)

施引文献

附加信息(0)

访问统计