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

Table 1

A portion of the bearing operational data employed for training.

						Fault status	Fault vector
1	0.9766	0.1272	0.0991	0.122	0.0737	Normal signal	1
2	0.9596	0.148	0.077	0.209	0.0873	Normal signal	1
3	0.9562	0.1429	0.0679	0.2365	0.0678	Normal signal	1
4	0.8743	0.4503	0.113	0.0959	0.1043	Inner ring fault signal	2
5	0.8929	0.4201	0.0986	0.1107	0.0649	Inner ring fault signal	2
6	0.8792	0.4137	0.188	0.1122	0.0892	Inner ring fault signal	2
7	0.9711	0.1659	0.0222	0.0346	0.1667	Outer ring fault signal	3
8	0.9631	0.1525	0.1587	0.0216	0.1532	Outer ring fault signal	3
9	0.951	0.2013	0.2162	0.0186	0.0895	Outer ring fault signal	3