高阶谱在分流集流阀故障诊断中的应用  

Application of High Order Spectrum in Fault Diagnosis of Flow Distributing and Collecting Valve

作　　者：耿文飞[1] 梅二召 吴文兵[1] 

机构地区：[1]昆明理工大学信息工程与自动化学院,昆明650500

出　　处：《煤矿机械》2015年第10期306-309,共4页Coal Mine Machinery

基　　金：昆明理工大学省级人培项目(14118829);国家自然科学基金(65009301)

摘　　要：为解决分流集流阀故障快速诊断的问题,提出一种基于高阶谱的分流集流阀故障诊断的方法。当分流集流阀系统受到零均值的非高斯噪声干扰时,采样数据,并对数据进行处理,用高阶累积量对数据建立AR模型,再进行高阶谱分析,针对分流集流阀的双谱结构图、等高线图、AR对角切片图和三谱二维切片图在正常情况和故障情况下的不同进行对比,差异明显。试验结果表明利用高阶谱理论进行故障诊断是可行的。In order to solve the problems of fault rapid diagnosis of the flow distributing and collecting valve, put forward a kind of method which is based on higher order spectrum about fault diagnosis of flow distributing and collecting valve. When flow distributing and collecting valve is zero mean non-gaussian noise, sampling data, and the data processing, the AR model is established by using high-order cumulants to data, then double spectrum analysis. In view of the flow distributing and collecting valve double spectrum chart, contour map, AR diagonal slice figure and 2 d slices of three spectrum in normal and fault conditions, comparing the different difference is obvious. The experiment results indicate it is feasible to carry out fault analysis using high order spectrum.

关 键 词：分流集流阀 高阶累积量 AR模型 故障诊断 

分 类 号：TH137.5[机械工程—机械制造及自动化]