大型星载天线展开系统故障树的区间分析方法  

INTERVAL ANALYSIS METHOD OF FAULTY TREE FOR THE DEPLOYMENT SYSTEM OF A LARGE SATELLITE ANTENNA

作　　者：林立广[1] 陈建军[1] 马娟[1] 刘国梁[1] 段宝岩[1] 

机构地区：[1]西安电子科技大学机电工程学院,西安710071

出　　处：《机械强度》2010年第1期68-73,共6页Journal of Mechanical Strength

基　　金：国家863高技术研究发展计划项目(2006AA04Z402);国防预研基金(Y13406040101)资助~~

摘　　要：针对某周边桁架式大型星载天线进行展开可靠性研究。分析大型星载天线的展开机理,并在对星载天线展开系统故障树分析的基础上,针对传统故障树分析中存在的不确定性难以量化的问题,结合D-S(dempster-shafer)理论和区间概率理论,提出星载天线展开机构故障树区间分析方法,构造失效独立和失效相关情况下故障树区间分析的与门区间算子和或门区间算子,在此基础上对系统的展开可靠度进行分析和预测。可靠性分析的结果表明文中提出的计算模型和分析方法是合理和可行的。A study on the deployment reliability of a large satellite antenna with hoop-truss was presented. Firstly, the movement principium of the large antenna was studied. Secondly, To formulate the uncertainties of conventional fault tree analysis, the method of fault tree interval analysis based on D-S（dempster-shafer） theory and interval probability theory is proposed. On the condition that the premises in FTA（faulty tree analysis） is dependence or independence between basic events, the AND operator and the OR operator are proposed to compute interval probability of FTA, and upon which the system reliability was forecased. The reliability analysis shows that the rationality and validity of the presented method.

关 键 词：星载天线 展开机构 故障树 D-S(dempster-shafer)理论 区间概率理论 

分 类 号：V240.2[航空宇航科学与技术—飞行器设计]