Research on Rolling Bearing Fault Diagnosis Using Improved Majorization-Minimization-Based Total Variation and Empirical Wavelet Transform

Table 2

Experimental parameters of faulty bearings.

Fault model	Motor speed (r/min)	Motor output frequency fop (Hz)	Sampling frequency (Hz)	Rotation frequency (Hz)	Characteristic frequency (Hz)
Outer race failure	1100	50	12800	18.3	88.5
Inner race failure	1100	50	12800	18.3	142
Rolling element failure	1100	50	12800	18.3	45.3