以模糊理论为基础 ,结合凝汽器实际运行状况和现场专家经验 ,分析了故障与征兆之间的模糊关系 ,形成了凝汽器模糊故障诊断规则 ,并采用故障分解的方法 ,建立了凝汽器模糊故障诊断模型 ,最后用一具体故障诊断实例加以分析 ,验证模糊理论及方法在凝汽器模糊故障诊断中的应用 Based on the fuzzy theory, combined with the actual operation of the condenser and field experts’ experience, the fuzzy relation between the fault and the symptom is analyzed, and the diagnosis rules of the condenser fuzzy fault are formed. The method of fault decomposition is used to establish the condensing Fuzzy fault diagnosis model, and finally a specific example of fault diagnosis to be analyzed to verify the fuzzy theory and methods in the condenser fuzzy fault diagnosis application