天问一号高分相机多状态可靠性建模方法  

Multi-state reliability modeling method for Tianwen-1 high-resolution camera

作　　者：王严[1] 孙天宇[1] 罗佺佺 李杨[1] 李晓波[1] WANG Yan;SUN Tianyu;LUO Quanquan;LI Yang;LI Xiaobo(Space Department III,Changchun Institution of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所空间三部,长春130033

出　　处：《光学精密工程》2022年第2期137-142,共6页Optics and Precision Engineering

基　　金：国家自然科学基金青年科学基金项目(No.61805001)。

摘　　要：为了分析天问一号火星高分相机不同状态对性能的影响,最大限度提高使用效率,对高分相机的多状态、状态变化过程和仿真方法开展研究。首先,分析相机的组成和不同功能单元退化产生的影响。然后,分析相机在轨工作的多状态变化规律,建立转化过程模型。最后,提出基于多状态的仿真建模方法。案例仿真分析结果表明:考虑调整后实际有效数据获取概率提高评估准确性,通过敏感度分析也可有效提出调焦单元可靠性要求。多状态分析方法可有效评估火星相机或其他航天光学载荷可靠性水平,有效指导可靠性要求的制定和工程设计。In order to solve the problems of multi-state impact on camera performance and to maximize efficiency,multi-states and their transition models were investigated. First,the origin of multi-state was identified,and the effect of deterioration of each function unit was analyzed. Then,a model containing multi-state transition was established. Finally,a simulation method is put forward. A brief case study indicated that considering multi-states would improve the accuracy and reliability of prediction,and that sensitivity analysis will help in balancing the system reliability requirement and system reliability. The multistate reliability simulation method can be a more accurate method for predicting the reliability of space cam-eras and provides a practicable engineering solution.

关 键 词：多状态 退化 可靠性建模 仿真 

分 类 号：TP394.1[自动化与计算机技术—计算机应用技术] TH691.9[自动化与计算机技术—计算机科学与技术]