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

Table 2

Values of the SDI and free parameters a, b, c, d, and f corresponding to the optimal multiwavelets for rotating machinery platform experiment.

Scale	A01	A02	D01	D02	D11	D12	D21	D22
SDI	125.67	119.70	135.81	76.93	175.49	108.34	166.59	105.30
a	−1.10	−0.61	−3.81	−8.26	−1.17	−2.98	−8.50	4.56
b	7.86	8.93	3.46	7.41	−4.16	−6.76	−3.46	−3.90
c	−3.17	−1.06	−4.74	−5.18	−3.00	0.96	−3.33	−5.68
d	9.48	−0.08	−4.64	−1.26	5.53	5.69	7.25	5.51
f	1.03	3.30	7.15	9.86	0.89	4.59	−1.17	1.85