复解析小波变换在齿轮故障诊断中的应用

提出了一种基于复解析小波变换的相位诊断齿轮故障的方法。复解析小波变换将Hilbert变换与小波分析紧密结合在一起，具有自适应分析能力。利用复解析小波变换得到齿轮振动信号的相位，其功率谱图上可提取调制边频带结构来识别故障模式，试验结果表明这种方法可有效应用于齿轮局部故障诊断中。

Application of Complex Analytical Wavelet Transform in Fault Diagnosis of Gears

A new method using the phase based on complex a na lytical wavelet transform for fault diagnosis of gears was proposed.The phase of vibration signals of gears is got by complex analytical wavelet transform,which combines Hilbert transform with wavelet transform tightly and possesses adaptiv e analysis ability.By making spectrum analysis of the phase,the sideband structu re in power spectrum can be protruded,and the fault pattern can be identified.Ex perimental results show that the proposed method is effective in local defect de tection of gears.