Fault Identification of Rolling Bearing Using Variational Mode Decomposition Multiscale Permutation Entropy and Adaptive GG Clustering

Table 2

Membership degree of 4 different state signals.

Sample group no.	Membership
	V1	V2	V3	V4
NR	0	1	0	0
BF	0.9725	0	0.0275	0
IF	0	0	0	1
OF	0.0028	0	0.9972	0