According to the mechanism of aircraft fault propagation inner-system and inter- system, the fault diagnosis method based on functional directed graph for multi-TASK was proposed to optimize the fault diagnosis process and efficiently train the retraining personnel. Based on the aircraft manual, a functional directed graph model of the line replaceable unit was established, the fault propagation relationship was characterized, and the model would be processed by the matrix algorithm and the hierarchical algorithm. The hierarchical algorithm was combined with the reachable matrix algorithm and node depth algorithm. The priority of the LRU for fault diagnosis was determined by the fault localization and pruning algorithm considered the global risk influence degree. The proposed method of fault diagnosis was verified by a case and the results has been proved that the method could shorten the diagnosis time.
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陈静杰,王文慧,耿宏.面向多TASK基于有向图的故障诊断方法研究[J].机床与液压,2017,45(18):27-33. . Research on fault diagnosis method for multi-TASK based on directed graph[J]. Machine Tool & Hydraulics,2017,45(18):27-33