航天器环境工程2023，Vol.40Issue(6)：587-597,11.DOI:10.12126/see.2023035
高分辨率遥感小卫星微振动全链路集成建模与验证
Full-link integrated modeling and verification for micro-vibration of high-resolution remote sensing small satellite
摘要
Abstract
In order to comprehensively analyze the adverse effects of flywheel micro-vibration on high-resolution optical remote sensing small satellite system,a full-link integrated analysis model for optical-attitude control-structure was established to evaluate the suppression of micro-vibration by the vibration isolation system in the design stage and to calculate the integrated image offset of the camera.Firstly,a two-stage vibration isolation dynamics model was built with flywheel vibration as input.Then,the image offset of the linear optical system as a function of the mirror body's degrees of freedom was created,a simplified model of the satellite attitude control system was constructed,and the steady-state error of the satellite attitude angular velocity and image offset under vibration isolation were calculated.Finally,ground measurements and on-orbit micro-vibration verification were carried out.The results show that the maximum value of image offset calculated by the integrated analysis model is 0.129 8 px with a satellite attitude stability of 7.5×10-6rad/s under the action of the disturbance moment;the maximum value of single-direction image offset of the ground measurement in the frequency domain is 0.114 8 px with a satellite attitude stability of 7.5×10-6rad/s;and the maximum value of image offset of the on-orbit imaging in the frequency domain is 0.084 6 px with a satellite attitude stability of 7.0× 10-6 rad/s.The modeling and testing results are at the same level,which verifies the effectiveness of the model.关键词
光学遥感小卫星/飞轮/微振动/集成分析模型/成像试验Key words
optical remote sensing small satellite/flywheel/micro-vibration/integrated analysis model/imaging test分类
航空航天引用本文复制引用
段胜文,钟兴,陈善搏,张冰,韩霜雪,张雷,赵相禹..高分辨率遥感小卫星微振动全链路集成建模与验证[J].航天器环境工程,2023,40(6):587-597,11.基金项目
中国博士后科学基金项目"地区专项支持计划"(编号:2021MD703795) （编号:2021MD703795）
