Feature Extraction Based on Adaptive Multiwavelets and LTSA for Rotating Machinery Fault Diagnosis

Table 6

Values of the SDI and free parameters a, b, c, d, and f corresponding to the optimal multiwavelets for hydroelectric generator unit experiment.

Scale	A01	A02	D01	D02	D11	D12	D21	D22
SDI	7.56	7.12	7.24	8.91	8.43	16.66	10.72	11.45
a	−2.67	4.32	−1.09	4.52	−9.48	−6.42	−6.80	3.03
b	5.13	−7.51	−8.82	−0.17	−0.20	−6.29	−7.62	1.18
c	−5.50	−1.29	−7.95	5.09	−8.94	−7.18	−0.16	9.60
d	−3.32	−9.87	−7.12	0.15	0.01	8.67	2.13	0.78
f	−1.39	−7.54	1.81	9.34	1.45	2.67	0.75	−0.00