故障树分析法在机载卫通站故障诊断中的应用

Application of Fault Tree Analysis Method in Airborne Satellite Communication Station Fault Diagnosis

针对机载卫通站结构复杂、故障率高和维修困难等问题,基于故障树分析法的基本原理,建立了机载卫通站故障树模型。采用最小割集法进行了定性和定量分析,研究了产生机载卫通站通信中断的主要因素和各因素的影响程度、影响大小以及顶事件发生概率和底事件重要度计算方法,找出了系统的薄弱环节,给出了基于故障树分析的卫通站故障分析、诊断和预测方法。

To solve the complicated structure,high fault rate and difficult maintenance problems of airborne satellite communication station,the fault tree analysis model is established based on the basic principles of fault tree analysis.The minimum cut set method is adopted to conduct qualitative and quantitative analysis.The main factors that can cause airborne satellite communication cut off and the impact degree of all factors are researched.In addition,the top event occurrence probability and the bottom event importance calculation method are analyzed to find out the weak link of the system and to work out the satellite communication failure analysis method,diagnosis method and prediction method based on the fault tree analysis.