摘要
介绍了小波包分解与Hilbert解调技术,利用小波包分解可以突出能量集中的频段,然后利用Hilbert解调谱提取其故障特征。结果表明小波包与Hilbert解调谱相结合可以有针对性地提取矿用齿轮箱的低频调制故障特征,从而实现矿用齿轮箱的精密故障诊断。
Wavelet packet and hilbert demodulation technology are introduced.By wavelet packet decomposition,the power centralization frequency segments can be stranded out.Then the fault character is extracted by the hilbert demodulation spectrum.The result shows that the lower frequency demodulated fault character could be extracted pertinently by the combination of wavelet packet and Hilbert demodulation spectrum;the precision fault diagnosis of mine gear box can be realized.
出处
《机械传动》
CSCD
北大核心
2009年第2期61-62,69,共3页
Journal of Mechanical Transmission
基金
河南理工大学青年骨干教师资助计划项目:649034
