某型号航天产品设备漏电故障诊断研究

Research on the leak current fault diagnosis system for some model aerospace product

提出了基于图论模型的最小路集的某型号航天产品漏电故障诊断问题的求解方法。从系统的角度分析了某型号航天产品控制系统漏电故障诊断的特殊性,应用图论知识,用图中的点代表部件,边代表部件之间的故障传播关系,将系统模型化为图。在此基础上,根据信息论的原理给出了诊断算法的设计原则——对分原则。通过分析实际操作的可行性和熵函数的特点,采用部件权值代替部件信息熵的方法。

A way based on minimum bypath union of graph theory module was proposed in this paper to solve the problem of the electricity leakage fault diagnosis of one kind of spaceflight products. Analyzed the particularity of the elecaicity leakage fault diagnosis in systemic, used the graph theory. In this paper, the point of graph stand on part, and the edges stand on the relation ship of the faults＇s propagation. Let become to graph. Based on this way, according to the principles of information theory, we give the principle of diagnosis algorithm——the principle of, dichotomy. Analyzed feasibility of practical manipulation and the character of enntropy function, let power value of part in charge of information entropy, and we get a good result.