基于区间与概率的星载网状天线展开可靠性分析  

RELIABILITY ANALYSIS OF SATELLITE MESH ANTENNAS BASED ON INTERVAL AND PROBABILITY

作　　者：刘帅杰[1,2] 段宝岩[1] 张逸群[1] 

机构地区：[1]西安电子科技大学电子结构装备设计教育部重点实验室,陕西西安710071 [2]中国航空工业集团公司洛阳电光设备研究所,河南洛阳471000

出　　处：《工程力学》2017年第7期214-223,共10页Engineering Mechanics

基　　金：国家自然科学基金项目(51490660)

摘　　要：针对大型星载网状天线展开过程的特点,该文采用区间与概率混合可靠性分析方法对星载网状天线的展开过程可靠性进行了分析和评估。首先,建立了星载网状天线的展开失效树模型,并对失效树模型中各底事件进行了归类;其次,将关键底事件中所涉及到的不确定量视其特点描述为随机变量或区间变量,并利用混合可靠性模型分析方法获得了相应底事件的失效概率;再者,制作了2 m口径试验天线与典型试验展开机构样件,通过试验获得了天线展开过程中伸缩杆滑动的失效概率,进而得到了星载网状天线总的展开失效概率和展开可靠度;最后,对基本底事件进行了重要度分析,找出了可能导致星载网状天线展开失效的薄弱环节。The deployment process reliability of a satellite mesh antenna is analyzed and evaluated using the hybrid reliability model of interval and probability. Firstly, the failure tree model of the satellite mesh antenna is established, and the basic event of the failure tree model is classified. Secondly, the uncertainties involved in the key bottom events are divided into random variables and interval variables based on their characteristics. The failure probability of the corresponding bottom event is obtained using the hybrid reliability model. A two-meter practical model is made and the failure probability of the telescopic rod in the deployment process of the antenna is obtained according to the test method. The total failure probability and reliability of the antenna is obtained. Finally, an importance degree analysis of the basic event identifies the weak link in the failure of the satellite mesh antenna.

关 键 词：星载网状天线 区间概率混合模型 可靠性 失效树 重要度 

分 类 号：U443.4[建筑科学—桥梁与隧道工程]