An Improved Method of EWT and Its Application in Rolling Bearings Fault Diagnosis

Table 5

Comparisons of IEWT and EEMD.

Method	Correlation coefficient		Kurtosis of optimal component	Number of components	Running time/(s)
IEWT	y	0.7501	8.2330	4	4.285
	x	0.9928
	e	0.7710
EEMD	y	0.4565	4.7932	13	20.074
	x	0.9799
	e	0.6636