设备故障的二级模糊综合诊断方法的研究

在设备故障诊断中,由于故障原因繁多且相互交织和影响,导致设备故障具有一定的模糊性。本文将模糊理论引入设备故障的诊断过程中,针对每种故障原因,建立一个故障原因两两比较模糊矩阵,通过故障原因两两比较模糊矩阵,确定故障症状对故障原因的隶属度,从而建立了模糊诊断矩阵,在模糊综合诊断过程中,由于模糊算子对信息的取舍均带有一定的倾向性,为抑制其偏激,我们首先分别采用5种模糊算子进行综合诊断,然后根据诊断的结果,将可信度较高的3种模糊算子诊断的结果加权平均,作为最终诊断结果,以提高诊断结果的可靠性。最后,通过实例演示了故障的诊断过程。

Research on two-grade fuzzy synthetic fault diagnosis of the equipments

Fault diagnosis is a fuzzy problem because that there are many faults,they often exist concurrently and affect one another. It introduces a method of fault diagnosis using fuzzy set theory. In the paper, we construct a pair-wise comparison matrix for a kind of fault symptom through which we can derive the membership of the fault symptom with respect to the fault,and then the fuzzy diagnosis matrix can be constructed. In the first-grade diagnosis,we use five different fuzzy algorithms to diagnose synthetical...