基于模糊Petri网的FMS系统故障诊断研究

Study on FMS Fault Diagnosis Based on Fuzzy Reasoning Petri Net

本文根据FMS故障诊断系统知识具有不确定性及模糊性的特点,提出利用模糊Petri网来描述FMS故障产生和传播过程的故障诊断模型。首先介绍了模糊Petri网(FPN)的定义及用模糊Petri网表示产生式规则的方法,然后通过应用实例说明模糊Petri网的推理算法,最后还提出了规则库的维护方法。

According to the uncertainty and fuzziness of Faults Diagnosis System's knowledge,we propose a fuzzy reasoning Petri net model which can describe the process of production and spreading of FMS's faults.The definition of FPN and the knowledge presentation based on FPN are described firstly.Then the fuzzy reasoning algorithm is explained through an example.We also discuss the maintenance of the rule base.