摘要
从某空间相机的任务需求出发,提出了采用基于碳纤维复合材料的高精密桁架作为主次镜间的支撑结构,完成了相关设计和工程分析,并在加工制造过程中,对相关工艺流程进行了探索。确定了相关结构的制造工艺流程,实现了该结构的高精密加工。最后,深入开展了相关振动、力学和温度稳定性试验,搭建了基于光学测量方法的自动测试平台,排除了人为因素的影响,实现了快速多次自动测量,从而提高了测试精度。分析和试验结果表明:所研制的大型碳纤维桁架质量仅为13kg,基频达到119Hz,在重力、10℃温升和4℃温差条件下的变形均小于4″,各组件Φ864mm安装接口的平面度优于8μm,同时实现了高度轻量化和高稳定性。该桁架已成功应用于某空间相机中,提出的设计、试验方案和工艺流程可以作为其它同型空间相机结构设计的技术参考。
According to the requirements of a coaxial space remote sensors, a high-precision truss made of carbon fiber composites was developed to be as the supporting structure between primary and sec- ondary mirrors, and its engineering applications were analyzed. In the manufacturing process, the rel- evant technological process was explored and the high-precision machining of the structure was real- ized. Finally, the vibration test, mechanical test and temperature stability test were performed. Based on the optical measurement method, an automatic testing platform was set up and the measurement precision was improved by rapidly repeated measurement and the elimination of artificial factors. The analysis and test results indicate that the high-precision truss only weights 13 kg, the first natural fre- quency is 119 Hz, and the deformations are less than 4＂ under the conditions of gravity, 10 ℃ temper- ature rise and 4℃temperature difference. Furthermore, the flatness of mounting interfaces for each component is less than 8/μm in the high lightweight and high stability. The truss has been successfully applied in a space remote sensor, and the design scheme, test scheme and the manufacturing process discussed in this paper can be used as a reference for other coaxial space remote sensors with the same type.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2012年第9期1967-1973,共7页
Optics and Precision Engineering
基金
国家863高技术研究发展计划资助项目(No.2006AA701410)
科技部国际合作资助项目(No.2011DFA50590)
关键词
空间相机
碳纤维复合材料
桁架
环境试验
稳定性
space remote sensor
carbon fiber composite
supporting truss
environmental, test
sta-bility
