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

<div>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.</div>

Shock and Vibration

fig12

Figure 12

Figure 12: An MCM-Enhanced Compressive Sensing for Weak Fault Feature Extraction of Rolling Element Bearings under Variable Speeds 