Remaining Useful Life Prediction and Fault Diagnosis of Rolling Bearings Based on Short-Time Fourier Transform and Convolutional Neural Network

Table 1

List of fault samples.

Damage size (inch)	Motor speed (r/min)	Normal signal	Inner ring failure	Outer ring failure	Rolling element failure
0	1797	240	—	—	—
	1772	240	—	—	—
	1750	240	—	—	—
	1730	240	—	—	—
0.007	1797	—	80	80	80
	1772	—	80	80	80
	1750	—	80	80	80
	1730	—	80	80	80
0.014	1797	—	80	80	80
	1772	—	80	80	80
	1750	—	80	80	80
	1730	—	80	80	80
0.021	1797	—	80	80	80
	1772	—	80	80	80
	1750	—	80	80	80
	1730	—	80	80	80
Total	—	960	960	960	960