Improvement of Adaptive GAs and Back Propagation ANNs Performance in Condition Diagnosis of Multiple Bearing System Using Grey Relational Analysis

Table 2

Example of bearing vibration data.

	Normal		Drive end bearing fault data									Fan end bearing fault data
Number	bearing		Inner race fault			Ball fault			Outer race fault			Inner race fault			Ball fault			Outer race fault
	DE	FE	BA	DE	FE	BA	DE	FE	BA	DE	FE	BA	DE	FE	BA	DE	FE	BA	DE	FE
1	0.053	0.146	0.065	−0.083	−0.402	0.016	−0.003	−0.247	0.000	0.009	−0.407	0.098	−0.025	−0.051	0.017	−0.168	0.320	−0.031	−0.134	0.127
2	0.089	0.098	−0.023	−0.196	−0.005	0.017	−0.096	0.143	0.069	0.424	0.263	0.042	−0.029	−0.192	−0.004	0.181	0.326	−0.120	0.003	−0.259
3	0.100	0.055	−0.089	0.233	−0.107	−0.036	0.114	0.003	0.031	0.013	0.495	−0.042	−0.046	0.051	−0.169	0.044	−0.260	−0.006	−0.027	−0.060
4	0.059	0.037	−0.094	0.104	−0.074	−0.045	0.257	−0.107	−0.037	−0.265	−0.423	0.081	0.001	0.151	−0.069	−0.270	0.031	0.060	−0.184	0.454
5	−0.005	0.054	−0.076	−0.181	0.209	0.008	−0.058	0.136	−0.116	0.237	−0.307	0.059	−0.037	−0.095	0.090	−0.138	0.447	−0.131	−0.203	0.075