CAJ | 학술논문

卫星天线板的展开精度对卫星在轨工作精度有影响显著，展开精度受多种因素影响，其中加工装配误差难以避免且具有不确定性，需利用统计和概率方法进行研究。文章分析了卫星天线板支撑机构锁定铰链锁定位置偏差对天线板展开精度的影响；建立了卫星天线板动力学模型，提取动力学分析结果作用于展开状态的天线板有限元模型进行静力分析，得到结构节点变形；定义了衡量天线板变形程度的精度指标，包括平面度偏差和指向角度偏差；基于给定的铰链锁定误差分布，采用蒙特卡洛法得到了天线板展开状态下精度指标的概率分布，拟合并验证了其满足正态分布，为天线板的可靠性设计和展开精度改进提供了依据。
위성천선판적전개정도대위성재궤공작정도유영향현저，전개정도수다충인소영향，기중가공장배오차난이피면차구유불학정성，수이용통계화개솔방법진행연구。문장분석료위성천선판지탱궤구쇄정교련쇄정위치편차대천선판전개정도적영향；건립료위성천선판동역학모형，제취동역학분석결과작용우전개상태적천선판유한원모형진행정력분석，득도결구절점변형；정의료형량천선판변형정도적정도지표，포괄평면도편차화지향각도편차；기우급정적교련쇄정오차분포，채용몽특잡락법득도료천선판전개상태하정도지표적개솔분포，의합병험증료기만족정태분포，위천선판적가고성설계화전개정도개진제공료의거。
The deployment precision of satellite antenna plate influences orbit accuracy significantly. Deployment accuracy is affected by many factors, of which the errors from processing and assembly are dif-ficult to avoid and with uncertainty, and need be studied by using statistical and probabilistic methods. This paper analyzes the influence on the deployment precision of the satellite mechanism which is caused by the lock angle deviation of lockable joints equipped on the antenna support mechanism, establish the dynamic model, extract the analysis results for static analysis on the finite element model to get nodes deformation, and defines the deviation of the antenna flatness and pointing direction to measure the deformation of the antenna plate. Based on the given hinge locking error distribution, the paper uses Monte Carlo method to get a precision probability distribution of the deployed antenna, which is fitted and verified to be a normal dis-tribution;and can be a basis of reliability design and improvement of the antenna deployment accuracy.