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

<div>The analysis results using NEA: (a) kurtogram; (b) envelope order spectrum: the spectrum is obscure, and SNR2 is only −9.07 dB.</div>

Shock and Vibration

Figure 14: An MCM-Enhanced Compressive Sensing for Weak Fault Feature Extraction of Rolling Element Bearings under Variable Speeds 