A Bearing Performance Degradation Modeling Method Based on EMD-SVD and Fuzzy Neural Network

Table 2

The calculation results of the correlation coefficient.

IMF components	IMF1	IMF2	IMF3	IMF4	IMF5	IMF6	IMF7	IMF8	IMF9	IMF10	IMF11	IMF12
Correlation coefficient
Normal state	0.4167	0.3394	0.5105	0.2787	0.1814	0.2279	0.1227	0.1692	0.0933	0.0579
Fault state	0.3939	0.2462	0.1819	0.2414	0.2819	0.2453	0.1729	0.0937	0.0783	0.0645	0.0458	0.0224