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《Journal of Changchun University of Technology(Natural Science Edition)》 2014-01
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Hilbert-Huang transform based fault diagnosis for bearing pad

MA Feng-lei;ZHENG Yong-tao;JIANG Zhen-hai;School of Mechatronic Engineering,Changchun University of Technology;  
According to the features of abnormal sound such as non-linear and non-stability in the bearing pad engine signals,both the normal and abnormal signals from bearing pad engine are analyzed with Hilbert-Huang transform(HHT)to get the 3D Hilbert spectrum and time-frequency distribution.The high-frequency component producing the abnormal sound signal is separated, accordingly,the causes are worked out.The results show that the normal engine inherent frequency is 210Hz,while the noise frequency is at 500 Hz,1 500Hz and 2 700 Hz respectively.The noise is generated by the wear of bearing pad based on acceleration spectrum analysis.
【CateGory Index】: U472.43
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