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运用模糊数学方法，将阀值原则和最大隶属原则相结合，建立了凝汽器故障诊断模型。实践证明，该模型能有效地判定待识别征兆集是否为病态，而且所得隶属度差别明显，因而能准确判定故障原因。避免因待识别征兆集病态引起的误判断或因几种故障的隶属度无显著差异，而导致无法明确诊断故障的问题。
Using the fuzzy mathematics method, the threshold principle and the maximum membership principle are combined to establish the fault diagnosis model of condenser. Practice has proved that the model can effectively determine whether the set of signs to be identified is pathological, and the obtained membership degree is obviously different, which can accurately determine the cause of the fault. To avoid the misidentification caused by the pathology of the symptom set to be identified or because there is no significant difference in the subordinate degree of several kinds of faults, the problem of not being able to diagnose the fault clearly can be avoided.