摘要
针对高精度测绘卫星结构尺寸稳定性这一关键性问题,基于在轨温度测量数据,利用热分析模型和在轨温度变化规律,提出了卫星结构在轨温度场的反演方法。基于卫星结构在轨温度场反演数据,提出了针对载荷安装面法向夹角的拟合计算方法和夹角稳定性短期、长期指标的预示方法。根据该方法,给出了高分七号卫星在轨初期1个月内的结构稳定短期指标和长期指标预示结果,并对短期稳定性预示结果进行了统计分析。结果表明,各载荷安装面短期稳定性分析结果满足指标要求,相关分析方法可为同类航天器的结构热变形分析提供参考。
Aiming at the critical problem of dimensional stability of high precision mapping satellite structure,an inversion algorithm of in-orbit temperature field of satellite structure was proposed by using the analysis model and the variation rule of in-orbit temperature.Furthermore,the predictive methods of the short-term and long-term angle stability of payloads mounting interface were proposed.And then based on the above methods,the predictive values of short-term and long-term structure stability of GF-7 satellite within the first month were presented.Finally,the results of short-term stability were analyzed statistically.The results show that the prediction results of the short-term stability meet the requirements.
作者
罗文波
张新伟
钱志英
张玲
白刚
莫凡
卢青荣
殷亚州
傅伟纯
LUO Wenbo;ZHANG Xinwei;QIAN Zhiying;ZHANG Ling;BAI Gang;MO Fan;LU Qingrong;YIN Yazhou;FU Weichun(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;Beijing Institute of Control Engineering,Beijing 100094,China)
出处
《中国空间科学技术》
EI
CSCD
北大核心
2021年第1期22-28,共7页
Chinese Space Science and Technology
基金
中国科协青年人才托举工程项目(2017QNRC001)。
关键词
高分七号卫星
结构
尺寸稳定性
在轨测量
热变形分析
GF-7 satellite
structure
dimensional stability
in-orbit measurement
thermal deformation analysis
