When different faults occur at the same time,the recognition accuracy of single channel signal is ob-viously reduced.In order to further reduce the influence of simultaneous filtering interference of bearing multi-chan-nel signal,a multi-bearing fault diagnosis method based on truncated high order singular value decomposition(HOSVD)is designed.Based on the HOSVD method,a multi-channel fault noise reduction method is proposed,and the multi-channel filter is implemented to enhance the detection efficiency to a great extent.Simulation signal analysis shows that it is difficult to extract fault feature information from time domain fault signal.The signal is ob-tained after noise reduction with the method presented in this paper.It has a good effect on noise reduction,and the final results show that it can effectively extract the periodic characteristics of the pulse.
关键词
轴承/多通道信号/故障诊断/截断高阶奇异值分解/降噪
Key words
bearing/multichannel signal/fault diagnosis/truncated high order singular value decomposition/noise reduction
维普
万方数据