A Hybrid Approach for Fault Diagnosis of Railway Rolling Bearings Using STWD-EMD-GA-LSSVM

Table 2

A portion of the bearing operational data used for testing.

						Fault status	Fault vector
1	0.9772	0.1131	0.1109	0.1171	0.079	Normal signal	1
2	0.9745	0.1355	0.0859	0.1415	0.067	Normal signal	1
3	0.9682	0.1313	0.1311	0.1566	0.0605	Normal signal	1
4	0.8771	0.421	0.1522	0.1472	0.0926	Inner ring fault signal	2
5	0.9034	0.3704	0.1352	0.1479	0.0806	Inner ring fault signal	2
6	0.7942	0.5615	0.1654	0.099	0.1296	Inner ring fault signal	2
7	0.9446	0.2831	0.0192	0.0163	0.1642	Outer ring fault signal	3
8	0.9476	0.1171	0.272	0.0159	0.119	Outer ring fault signal	3
9	0.9443	0.1283	0.2912	0.0493	0.068	Outer ring fault signal	3