第二代小波变换及其在故障诊断中的应用  

Second generation wavelet transform and its application in fault diagnosis

作　　者：李胜华[1] 华伟[1] 牛振华[1] 

机构地区：[1]河南理工大学,焦作454003

出　　处：《仪器仪表用户》2007年第2期69-70,共2页Instrumentation

摘　　要：第二代小波变换是一种基于提升原理的时域变换方法,介绍了第二代小波变换原理,给出了一种第二代小波变换过程中预测算子和提升算子的求取方法,在此基础上将第二代小波变换应用于矿用通风机的故障诊断中。结果表明该方法可以有效地分解信号和提取特征信息,在矿山机械故障诊断中具有良好的应用前景．Secend generation wavelet transform is a kind of time -domain transform method based on lifting scheme, the pdnciple of the second generation transform is described, the selecting scheme of predictor and updater is discussed, and on this basis apply the second generation wavelet transform to the fault diagnosis of the mine ventilator. The results show that this scheme can decompose the signal and extract the fault information effectively, having good application prospect in fault diagnosis of mine machinery.

关 键 词：第二代小波变换 预测算子 提升算子 故障诊断 

分 类 号：TH165.3[机械工程—机械制造及自动化]