Bearing Fault Diagnosis Using Synthetic Quantitative Index-Based Adaptive Underdamped Stochastic Resonance

Table 2

Correlation coefficients between SNR of the input or output signals and other four indexes.

	PSK	K	MI	CC
Input SNR	0.370	−0.351	−0.537	0.981
Output SNR	0.862	−0.772	-0.830	0.5345