An Approach to Fault Diagnosis for Gearbox Based on Image Processing

Table 2

Fault diagnosis result.

Fault types	Testing samples	Correct diagnosis results		Accuracy
		Bispectrum and SURF	EMD	Bispectrum and SURF	EMD
Normal	160	154	145	96.25%	90.625%
Fault 1	160	158	148	98.75%	92.50%
Fault 2	160	156	146	97.50%	91.25%
Fault 3	160	140	127	87.50%	79.375%
Fault 4	160	156	146	97.50%	91.25%
Total	800	764	712	95.5%	89.00%