Digital Twin Inspired Intelligent Bearing Fault Diagnosis Method Based on Adaptive Correlation Filtering and Improved SAE Classification Model

Table 2

The similarity under different cut-off frequencies.

Cut-off frequency (Hz)	Corr
0	0.3451
500	0.3578
1000	0.4046
2000	0.3829
3000	0.4718
4000	0.4881
4500	0.4884
5000	0.4880