模糊Petri网在航电总线系统故障诊断中的研究

Research Method of Fault Diagnosis Base on Fuzzy Petri Net For Avionic Bus System

航电总线系统结构复杂,各部件相互耦合,故障传播模式多样化。因此,为了处理故障诊断中不充分和模糊的信息,提出了将模糊Petri网应用到航电总线系统的故障诊断中,构建出其故障的传播模型,并在模型的基础上,给出有效的推理算法。表明利用模糊Petri网,可以建立航电总线系统的故障传播模式的模型,清晰地反映故障的产生、发展及影响。

The avionic bus system has complex structure and there are mutual couplings between the parts,the mode of failure is diversified.Therefore,in order to deal with the condition of inadequate and uncertain information,the fuzzy Petri nets applying in the fault diagnosis of the avionic bus system are proposed and the model of failure transmitting modes is established.And the effective reasoning algorithm based on fuzzy Petri nets model is suggested.Using fuzzy Petri nets,fault propagation model of avionic bus system can be established,and the production,development and impact of the failure can be reflected clearly.