Multiple Feature Vectors Based Fault Classification for WSN Integrated Bearing of Rolling Mill

Table 1

Correlation coefficients between IMFs and the original signal in four cases.

	IMF1	IMF2	IMF3	IMF4
Normal	0.4452	0.5507	0.5020	0.2117
	0.0634	0.1692	0.3012	0.0501
	0.0419	0.1353	0.0801	0.0993
Fault 1	0.8769	0.4236	0.1818	0.0940
	0.1529	0.0680	0.0355	0.0023
	0.0311	0.0598	0.0047	0.0110
Fault 2	0.9929	0.0867	0.0115	0.0114
	0.0629	0.0045	0.0002	0.0042
	0.0446	0.0036	0.0015	0.0019
Fault 3	0.9529	0.1038	0.1520	0.1546
	0.1569	0.0253	0.1300	0.0736
	0.0410	0.0206	0.0751	0.0352