Evaluation and Prediction Method of Rolling Bearing Performance Degradation Based on Attention-LSTM

Table 3

Linear weighted value of each indicator.

Features	Evaluation indicators		Linear weighted
	Corr	Mon	Rob	J
Square root amplitude	0.0044	0.5016	0.9844	0.4052
Root mean square	0.9007	0.5072	0.9816	0.7265
Peak to peak value	0.2762	0.5114	0.8660	0.4867
Peak value	0.0167	0.4947	0.8522	0.3842
Kurtosis	0.0064	0.5039	0.8637	0.3869
Waveform index	0.0058	0.5118	0.9950	0.4123
Margin index	0.0018	0.5104	0.8214	0.3813
Peak indicator	0.0004	0.5086	0.8239	0.3803
Average amplitude	0.0723	0.5049	0.9841	0.4309
Mean value	0.0532	0.5066	0.8856	0.4084
Pulse indicator	0.3452	0.4823	0.8432	0.4938
Kurtosis index	0.0081	0.5178	0.9236	0.4041