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《Journal of Vibration and Shock》 2015-16
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Present research situation of the extraction and processing of weak acoustic emission signals understrong background noise

FAN Bo-nan;WANG Hai-dou;XU Bin-shi;ZHANG Yu-bo;National Key Laboratory for Remanufacturing,Academy of Armored Forces Engineering;  
In the field of fault diagnosis,acoustic emission( AE) signals are often exposed to strong background noise caused by the environment and the detection system,which leads to the aliased distortion of AE signals. A review of the present research situation of the extraction and processing of acoustic emission signals under strong background noise was presented,including the characteristics of AE signals in fault diagnosis,the processing flow of AE signals,the denoising of AE signals by using wavelet,ICA and EMD,the feature extraction and fault recognition. Then a summary of insufficiency and solving methods in the research of denoising,feature extraction and fault recognition of AE signals was also presented. The future development of AE technology and relevant signal processing methods were forecasted.
【Fund】: 国家973计划资助(2011CB013405);; 国家杰出青年科学基金资助(51125023)
【CateGory Index】: TN911.7
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