Diagnosis of Localized Faults in Multistage Gearboxes: A Vibrational Approach by Means of Automatic EMD-Based Algorithm

Table 4

CIs for the vibration signal of Case  1, with localized fault in gear II.

		Kurtosis	CF	CPF	NSVP
EMD	Gear II (faulty)	10.220	8.785	4.437	1.395
	Gear III (healthy)	3.785	8.021	2.288	0.251
	Gear II versus gear III [%]	170.043	142.209	93.872	457.089
EEMD	Gear II (faulty)	9.945	7.806	4.444	1.205
	Gear III (healthy)	2.962	2.931	1.942	0.309
	Gear II versus gear III [%]	235.745	166.309	128.859	290.713
CEEMDAN	Gear II (faulty)	8.031	7.177	4.332	1.139
	Gear III (healthy)	3.141	3.036	2.141	0.112
	Gear II versus gear III [%]	155.666	136.382	102.324	917.173