A Bearing Performance Degradation Modeling Method Based on EMD-SVD and Fuzzy Neural Network

Table 3

Singular value decomposition results of vibration signals in normal and fault state of bearing 1.

State of bearing	Signals
Normal state	Group 1	4.00	3.57	2.96	2.12	2.00	1.47
	Group 2	4.10	3.26	2.65	2.32	1.69	1.13
	Group 3	3.67	3.41	3.03	2.25	2.05	1.32
	Group 4	4.59	3.04	2.52	1.95	1.81	1.13
	Group 5	4.19	2.99	2.80	2.18	1.76	1.27
	Group 6	4.40	3.07	2.78	2.39	1.82	1.26
	Group 7	4.30	3.40	3.01	2.23	2.06	1.43
	Group 8	4.15	3.43	2.76	2.52	1.70	1.19
	Group 9	4.06	3.78	2.51	2.40	1.75	1.34
	Group 10	4.09	3.32	2.52	1.89	1.84	1.30
Fault state	Group 11	11.40	8.30	7.53	6.84	6.37	4.42
	Group12	11.28	8.80	7.64	6.43	5.98	3.19
	Group 13	11.78	7.67	7.36	6.31	5.95	4.61
	Group 14	11.08	7.06	6.19	6.10	5.50	4.47
	Group 15	10.94	8.13	6.43	5.92	5.34	4.07
	Group 16	11.04	8.93	8.02	6.71	5.60	4.84
	Group 17	11.02	7.63	7.50	6.48	5.42	4.64
	Group 18	13.84	10.56	8.75	7.88	5.69	3.44
	Group 19	12.61	10.41	9.56	7.75	6.62	5.16
	Group 20	13.78	9.84	8.51	7.45	5.65	3.76