Combined Failure Diagnosis of Slewing Bearings Based on MCKD-CEEMD-ApEn

Table 1

Ratio of parameter: kurtosis.

Methods	IMFn							Stages
	1	2	3	4	5	6	7
	Ratio (%)
MCKD-CEEMD	5.16	12.1	19.5	27.5	35.0	42.5	50.8	(A)
	5.28	13.2	21.2	29.9	38.8	48.7	57.7	(B)
	11.9	24.1	40.2	53.1	58.8	64.8	69.5	(C)
MCKD-EEMD	4.36	10.3	16.6	23.5	29.5	36.3	45.8	(A)
	4.74	11.7	19.0	27.5	36.1	43.2	51.9	(B)
	11.0	22.5	39.0	51.9	56.6	61.5	66.0	(C)
CEEMD	4.93	11.4	18.2	28.4	36.1	45.3	52.2	(A)
	4.27	10.1	35.7	43.4	49.4	56.0	65.5	(B)
	12.7	27.1	43.3	49.2	53.7	59.8	64.9	(C)