基于图论模型的运载火箭漏电故障诊断方法

Methods of Electrical Leakage Diagnosis for Launch Vehicle Based on Graph Theory Model

漏电是航天发射过程中最常见也是危害极大的故障，建立漏电故障诊断系统是快速定位故障的有效方法。在分析航天器故障诊断现状的基础上，采用了基于图论模型的故障诊断方法，通过将运载火箭的供电系统模型转化为故障关系传播图，结合工程实践赋予部件相应的权值，运用信息论中的对分法原理设计了漏电故障诊断算法，并在实践中进行了检验。

Electrical leakage is the most frequent and harInful fault in the process of launch vehicle testing and launching. based on the analysis of fault diagnosis actualities, The paper presents a discursion method based on model instead of rule. It translates the actual power supply system of launch vehicle into the spread graph of fault relation. Given the corresponding weight, it designs the electrical leakage fault diagnosis algorithm according to bisection principal of information theory. It is shown by example that the diagnosis algorithm is correct and effective.