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

Table 6

CC under different components number.

Signal code	K	Correlation coefficient							Threshold range
S9	3	0.9825	0.0843	0.0899					(0.0611, 0.0843)
	4	0.9586	0.2496	0.0854	0.0611
S10	4	0.9750	0.1556	0.0846	0.0617				(0.0611, 0.0617)
	5	0.9749	0.1547	0.0704	0.0831	0.0611
S11	5	0.9711	0.1479	0.1163	0.0821	0.0639			(0.0573, 0.0639)
	6	0.9710	0.1477	0.1160	0.0798	0.0607	0.0573
S12	6	0.9673	0.1492	0.1183	0.0916	0.0821	0.0582		(0.0538, 0.0557)
	7	0.9673	0.1491	0.1181	0.0910	0.0800	0.0538	0.0557