基于Petri网的飞机交流发电机故障诊断方法研究  

Fault Diagnosis Methods of Aircraft AC Generator Based on Petri Nets

作　　者：王修岩[1] 薛斌斌[1] 李宗帅[1] 

机构地区：[1]中国民航大学航空自动化学院,天津300300

出　　处：《计算机测量与控制》2012年第4期878-880,共3页Computer Measurement &Control

基　　金：中央高校基本科研业务费中国民航大学专项资助(ZXH2010C002)

摘　　要：针对目前飞机交流发电机排故工作过程繁琐、效率低下的现状,提出将Petri网理论应用到飞机交流发电机故障诊断中;利用Petri网的并行处理能力来提高排故效率;改进了一种适合故障特性的Petri网模型,以Petri网的变迁激活规则进行故障诊断推理,从而分析出异常行为过程间的因果关系,推理出故障的原因;最后,以飞机交流发电机的失频故障为例,建立诊断模型,通过仿真分析验证了该方法的可行性和高效性。In order to change the complicated process and inefficiency during fault diagnosis of aircraft AC generator, Petri Net is pro- posed in this paper. Firstly, the parallel processing of Petri Net is presented to enhance the efficiency of diagnosis. Secondly, an improved fault Petri Net suitable to fault features is given, the flux activation rules of Petri Net are adopted to carry out fault diagnosis reasoning. Therefore, the cause and effect relationships in the abnormal activity process are analyzed. Then the cause of faults is reasoned. Finally taking the fault of frequency loss of aircraft AC generator as an example, the feasibility and the high efficiency of the method are verified by the simulation analysis results.

关 键 词：飞机交流发电机 故障诊断 故障PETRI网 诊断模型 失频故障 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]