Rotating Machinery Remaining Useful Life Prediction Scheme Using Deep-Learning-Based Health Indicator and a New RVM

Table 3

Features extracted from the vibration signal.

Type	Feature
Time-domain features	A1: root mean square	A2: kurtosis
	A3: peak-peak value	A4: shape factor
	A5: peak factor	A6: impulse factor
	A7: clearance factor	A8: mean absolute
	A9: standard deviation	A10: crest factor
Frequency-domain features	B1: mean value	B2: standard deviation
	B3: skewness	B4: kurtosis
	B5–B12: entropy of different frequency band
Time-frequency features	C1: time-frequency map