针对连续生产线设备故障诊断专家系统的研制，阐述了在建立模糊推理机过程中引入具有实时性的动态模糊关系的思想，并构造一个随无故障时间变化的动态隶属度函数来实现。

Developing fault diagnosis expert system for production line, the principle and method of structuring fuzzy inference engine are presented in this paper. Moreover, the idea of dynamic fuzzy relation with real time is introduced. And, it is illustrated that this idea is realized by defining a dynamic membership function changing with non-fault-time.