第二代小波变换及其在故障诊断中的应用

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．

Second generation wavelet transform and its application in fault diagnosis

Second generation wavelet transform is a kind of time -domain transform method based on lifting scheme,the principle 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.