基于小波分析的铺网机传动辊轴承故障诊断

铺网机传动辊轴承振动信号调制源多呈现出非平稳性等特点，导致常规的傅立叶分析诊断故障效果不佳的情况。本文提出了一种应用小波变换的时频分析方法，对振动信号进行分解和重构处理，获得了振动信号在不同的频段的分量，提取相应特征频段重构分量的功率谱的频域统计值作为特征参数，进行轴承故障诊断。试验结果显示该方法对铺网机传动辊轴承故障诊断有很好的效果。

Cross Lapper Bearing Fault Diagnosis Based on Wavelet Analysis

A time-frequency analysis method is presented to solve cross lapper transmission roller bearing vibration signals of unstable and complication, applying wavelet function to the unstable signals for faulty bearing accoMing to cross lapper transmission roller bearing characteristic, and process the vibration signals by means of decomposition and reconstruction, obtaining the vibration signals in different frequency bands, the statistic in frequency domain of relevant frequency bands is served as monitoring feature. Test showed its excellent results of roll bearing fault diagnosis.