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A Compound Fault Diagnosis for Rolling Bearings Method Based on Blind Source Separation and Ensemble Empirical Mode Decomposition

Figure 9

Envelope spectra of the original signal at different rotating speed.

A) 500 rpm; B)900 rpm; B)1300 rpm.

Figure 9

doi: https://doi.org/10.1371/journal.pone.0109166.g009