基于3维相关性矩阵的故障诊断方法

为解决航天器控制系统难以快速准确地诊断定位故障的问题,提出一种3维相关性矩阵的故障诊断方法.根据复杂系统功能原理,建立不同状态的最优化故障传播有向图模型,依据3维相关性矩阵的映射关系及检测结果快速映射到故障模式,实现系统故障的快速诊断定位及测试点的最优化设计.结果表明:该方法可以减少测试点的设置数量,降低故障诊断系统的复杂度,提高诊断的快速性.

Fault Diagnosis Method Based on 3D Correlation Matrix

In order to solve the problem that the spacecraft control system is difficult to diagnose and locate fault quickly and accurately, a fault diagnosis method based on 3D correlation matrix is proposed. According to the functional principle of complex system, the optimal directed graph model of fault propagation of different states is established. According to the mapping relationship of the 3D correlation matrix and fast mapping of detection results to fault modes, it realizes the rapid diagnosis and location of system faults and the optimal design of test points. The results show that this method can minimize the number of test points, reduces the complexity of fault diagnosis system and improves the rapidity of diagnosis.