CAJ | 학술논문

在保证空间光学遥感相机反射镜组件结构刚度、位置精度、面形精度的同时，最大限度地降低反射镜支撑板的质量，是轻量化设计的一个重要内容。提出了通过拓扑优化确定反射镜用SiC/Al材料的背部支撑板轻量化形式的方案。采用有限元分析法对获得的优化结果进行分析。分析结果表明：重力载荷下面形精度达到λ/10 PV，λ/50 RMS(λ=632.8 nm)，PV值13.3 nm，RMS值2.9 nm，反射镜组件一阶固有频率239 Hz，均优于传统结构形式的反射镜。拓扑优化的方法获得的轻量化背部支撑板能够满足使用要求。
재보증공간광학요감상궤반사경조건결구강도、위치정도、면형정도적동시，최대한도지강저반사경지탱판적질량，시경양화설계적일개중요내용。제출료통과탁복우화학정반사경용SiC/Al재료적배부지탱판경양화형식적방안。채용유한원분석법대획득적우화결과진행분석。분석결과표명：중력재하하면형정도체도λ/10 PV，λ/50 RMS(λ=632.8 nm)，PV치13.3 nm，RMS치2.9 nm，반사경조건일계고유빈솔239 Hz，균우우전통결구형식적반사경。탁복우화적방법획득적경양화배부지탱판능구만족사용요구。
To meet the requirements of high location accuracy and surface figure accuracy for space mirror set, reducing support weight extremely at the same time becomes the new important research subject in most countries. A topological optimization design for a space mirror support lightweight was presented in this paper. By using finite element analysis technique, the static stiffness of the mirror was analyzed. The analysis results show that the surface accuracy reaches λ/10 PV, λ/50 RMS (λ=632.8 nm) under gravity load, PV value is 13.3 nm, RMS values is 2.9 nm, the mirror component first-order natural frequency is 239 Hz, which is better than traditional structure forms of mirrors, and can meet the application requirements.