A Sparse Underdetermined Blind Source Separation Method and Its Application in Fault Diagnosis of Rotating Machinery

Figure 22

The blind source extraction results using the cICA method. (a) The constructed inner race fault reference signal. (b) The extracted signal by using the signal shown in Figure 22(a) as reference. (c) The envelope demodulation spectral analysis of the signal shown in Figure 22(b). (d) The constructed outer race fault reference signal. (e) The extracted signal by using the signal shown in Figure 22(d) as reference. (f) The envelope demodulation spectral analysis of the signal shown in Figure 22(e).

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