Shock and Vibration / 2020 / Article / Fig 12

Research Article

An MCM-Enhanced Compressive Sensing for Weak Fault Feature Extraction of Rolling Element Bearings under Variable Speeds

Figure 12

The envelope order spectra obtained by using (a) MCM: the spectrum is clear, and SNR2 is 33.4 dB; (b) GRM: the spectrum is clear, but SNR2 is only −44.7 dB.
(a)
(b)

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