Machinery and equipment failure, the fault feature extraction is very important. Failure vibration signal for multi-channel devices, the application of non-stationary signals blind source separation algorithm can effectively extract the independent non-stationary vibration source, which can accurately mechanical fault diagnosis. Not the same frequency distribution of non-stationary blind source separation algorithm to compare the effect of the separation. To the composite rotor failure, for example, to verify the feasibility of the algorithm in fault diagnosis.

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