Rolling Bearing Fault Diagnosis Based on CEEMD and Time Series Modeling

Table 4

Correlation coefficients between filtered signals and each IMF.

Signal	Correlation coefficient
	IMF1	IMF2	IMF3	IMF4	IMF5	IMF6	IMF7	IMF8
(a)	0.4135	0.7538	0.4381	0.4880	0.4356	0.1792	0.0971	−0.0056
(b)	0.8794	0.4275	0.2583	0.1337	0.0421	0.0285	−0.0009	−0.0074
(c)	0.9509	0.2180	0.2325	0.1337	0.0821	0.0350	−0.0017	0.0009
(d)	0.9878	0.1267	0.0636	0.0509	0.0136	0.0060	−0.0008	−0.0068