CAJ | 학술논문

文章应用集成建模思想对某型高分辨率空间相机进行了微振动影响的结构-光学集成分析。首先分别建立了该空间相机的微振动载荷模型、结构有限元模型和光学系统模型。然后对微振动载荷作用下的结构有限元模型进行动力学分析,获得空间相机各光学元件的响应位移,并输入到Code V光学模型中做光学系统仿真分析,得出MTF下降和像移情况。通过结果数据的对比分析表明,空间相机对沿坐标轴平动和转动的6种微振动载荷具有不同的响应敏感性,为改进设计、隔振抑振提供了参考。
문장응용집성건모사상대모형고분변솔공간상궤진행료미진동영향적결구-광학집성분석。수선분별건립료해공간상궤적미진동재하모형、결구유한원모형화광학계통모형。연후대미진동재하작용하적결구유한원모형진행동역학분석,획득공간상궤각광학원건적향응위이,병수입도Code V광학모형중주광학계통방진분석,득출MTF하강화상이정황。통과결과수거적대비분석표명,공간상궤대연좌표축평동화전동적6충미진동재하구유불동적향응민감성,위개진설계、격진억진제공료삼고。
Based on integratedly modeling method,a structural-optical integrated analysis on effect of micro-vibration on a high resolution space camera is carried out in this paper.Firstly,a micro-vibration model,a structural model and an optical model of the space camera are developed.Secondly,the paper obtains the response displacement of each optical component,by using dynamics analysis of space camera structural FEM.The optical system MTF descending and image motion can also be obtained by using Code V optical simulation software.The results show that the space camera has different sensitivities to translational and rotational micro-vibrations in each of three axes,which can be used to improve the structural design and mitigate the disturbance impact.