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Bearing Fault Diagnosis Based on Improved Wavelet Denoising and EMD Method
Author(s): 
Pages: 23-26,30
Year: Issue:  1
Journal: Measurement & Control Technology

Keyword:  wavelet threshold denoisingenergy-correlation coefficient methodfault diagnosis;
Abstract: 将改进的小波阈值去噪与EMD分解相结合应用于轴承故障诊断中.该方法首先利用改进的小波阈值去噪法对原始信号进行去噪,然后采用EMD方法将去噪后的信号自适应地分解成一系列IMF分量之和,通过能量-相关系数法选取能够反映故障特征的IMF分量进行包络谱分析提取故障频率.实验结果表明该方法能够有效识别故障特征频率.
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