Composite Fault Diagnosis of Rolling Bearing Based on Optimized Wavelet Packet AR Spectrum Energy Entropy Combined with Adaptive No Velocity Term PSO-SOM-BPNN

Table 7

Ratio of total energy and total energy entropy of wavelet packet (axial mean value of gearbox).

Type	sym8	db4	db5	db8	db10
Normal	3.2479	3.2479	3.2456	3.2472	3.2497
Inner ring and outer ring	2.8983	2.8962	2.8951	2.8985	2.9004
Inner ring and rolling element	3.2146	3.2151	3.2128	3.2148	3.2167
Outer ring and rolling element	3.1967	3.1949	3.1932	3.1968	3.1991