A Method for Determining Intrinsic Mode Function Number in Variational Mode Decomposition and Its Application to Bearing Vibration Signal Processing

Table 1

The value of the parameters related to the simulation signal.

Signal code	Factor	A1	A2	A3	A4	A5	A6	An	f1	f2	f3	f4	f5	f6
S1	Components amplitude	1	1/4	1/16
S2		1	5/12	25/144	0	0	0	0.1	2	24	288	0	0	0
S3		1	7/12	49/144
S4		1	1/3	1/9					2	12	72
S5		1	1/2	1/4	0	0	0	0.1	2	16	128
S6	Components frequency											0	0	0
S7									2	20	200
S8									2	24	288
S9		1	1/4	1/16	0	0	0	0.1	2	24	288	0	0	0
S10	Components number	1	1/4	1/16	1/8	0	0		2	24	288	100	0	0
S11		1	1/4	1/16	1/8	1/10	0		2	24	288	100	180	0
S12		1	1/4	1/16	1/8	1/10	1/12		2	24	288	100	180	240
S13								0
S14	Noise amplitude	1	1/4	1/16	0	0	0	0.05	2	24	288	0	0	0
S15								0.1
S16								0.15