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本文将模糊逻辑引入专家系统领域。阐述了模糊知识的含义表示法和模糊推理的基本规则并在此基础上设计了某设备故障诊断专家系统FDESE。在这一系统中,把领域专家在问题求解时所使用的知识抽象为事实性知识和诊断性知识,分别采用了二元组和模糊规则的表示方法;提出了一种多层正反向混合模糊推理策略,并设计了一组传播函数以计算结论的不确定性.
This article introduces fuzzy logic into the field of expert systems. The meaning of fuzzy knowledge and the basic rules of fuzzy reasoning are expounded. Based on this, a device fault diagnosis expert system FDESE is designed. In this system, abstract knowledge used by domain experts in problem solving is abstracted as factual knowledge and diagnostic knowledge, and two-tuples and fuzzy rules are used respectively. A multi-layer forward-backward hybrid Fuzzy reasoning strategy, and design a set of propagation functions to calculate the conclusion of the uncertainty.