摘要
针对某空间光学遥感器的圆形球面反射镜设计了一温升变形调节柔性结构件,对其力学模型及柔节参数进行了理论分析,并采用计算机辅助工程分析技术(CAE)对反射镜组件结构进行建模和仿真分析,以解决反射镜在力学环境下满足结构刚度要求,而热环境下面形精度显著超差的状况,使反射镜结构刚度满足力学要求的同时,具有良好的热尺寸稳定性,达到遥感器成像质量要求。分析结果表明:在柔性结构的调节作用下,反射镜在力和热两种环境约束工况下,面形精度满足成像质量要求,PV值均小于63.2nm,进而说明了这种柔性调节结构在实际结构中是合理可行的。
Referring to the optical rounded reflector of spherical surface used in a space remote sensor, a kind of flexible structure was designed for regulating thermal deformation. Theoretical analysis was done to its dynamic model and parameter of structure, and simulating analysis was also done to reflector module with technology of the Computer Aided Engineering （CAE） in order to solve the status of high rigidity of structure and poor thermal stability of thermal dimension. With the regulation of flexible structure, the optical reflector should keep not only the high rigidity of structure under the environment of statics and dynamics, but also fine stability of thermal dimension under thermal environment. Analysis result indicates that the surface accuracy of reflector meets the needs of the imaging quality under mechanics and thermal load, and the value of PV is less than 63.2 nm, which shows that the flexible regulating structure is reasonable to actual structure of the space remote sensor.
出处
《光电工程》
CAS
CSCD
北大核心
2009年第1期103-106,共4页
Opto-Electronic Engineering
基金
863基金资助项目(863-2-5-1-13B)
关键词
光学反射镜
计算机辅助工程
柔性结构
热尺寸稳定性
optical reflector
computer aided engineering
flexible structure
stability of thermal dimension
