Rolling Bearing Fault Diagnosis Based on MFDFA-SPS and ELM

Table 2

The detailed descriptions of seven vibration signals.

Operational status
Normal	0.9428	0.1920	0.9709	1.0180	0.9719	0.164
	0.9015	0.0505	0.8890	0.9016	0.9220	0.1889
	0.8604	0.0810	0.8634	0.8810	0.8793	0.2001
	0.9444	0.1205	0.9494	0.9777	0.9601	0.2048
	0.879	0.2475	0.9031	1.0036	0.9064	0.187
	0.8412	0.0875	0.8521	0.8633	0.8646	0.1941
	0.8953	0.0358	0.8728	0.8839	0.9002	0.2125
	0.8845	0.1472	0.9252	0.9704	0.9296	0.1795
	0.8943	0.2320	0.9318	1.0088	0.9348	0.2152
	0.8801	0.2773	0.9592	1.0447	0.9659	0.1808
Slight inner-race fault	0.0212	0.7166	0.2469	0.4784	0.2680	3.8163
	0.017	0.7609	0.2410	0.4953	0.2626	3.4612
	0.0282	0.7446	0.2399	0.4968	0.2612	3.6263
	0.0194	0.7637	0.2446	0.4934	0.2655	3.9188
	0.0199	0.7514	0.2423	0.4926	0.2635	3.6843
	0.0338	0.7990	0.2349	0.5216	0.2558	3.9312
	0.0232	0.7452	0.2408	0.5013	0.2629	3.8348
	0.026	0.8390	0.2442	0.5325	0.2647	3.8426
	0.0206	0.7632	0.2394	0.4959	0.2606	3.7296
	0.0165	0.6942	0.2382	0.4722	0.2601	4.4186
Serious inner-race fault	0.0179	1.0454	0.2957	0.6971	0.3247	6.5567
	0.0138	1.0007	0.3016	0.6499	0.3295	9.7837
	−0.0038	0.9971	0.2993	0.6581	0.3295	8.4325
	−0.0253	1.0316	0.2864	0.6547	0.3164	9.2739
	0.0035	1.0547	0.2926	0.6672	0.3211	6.15
	0.0027	0.9944	0.3019	0.6717	0.3329	7.4287
	−0.0039	1.1739	0.3056	0.7462	0.3361	5.5631
	0.0178	1.0191	0.2899	0.6604	0.3158	8.1085
	−0.0172	1.1845	0.3005	0.7466	0.3317	7.1877
	0.0032	1.1686	0.2995	0.7543	0.3297	7.1261
Slight outer-race fault	−0.113	0.8248	0.2408	0.4875	0.2780	15.47
	−0.1201	0.8391	0.2584	0.5113	0.3007	14.3396
	−0.1166	0.8249	0.2392	0.4847	0.2766	14.1815
	−0.1082	0.8311	0.2301	0.4799	0.2639	13.2106
	−0.1168	0.8655	0.2504	0.5129	0.2900	12.5522
	−0.1169	0.8559	0.2426	0.5009	0.2797	15.8954
	−0.1179	0.9478	0.2421	0.5299	0.2788	14.9106
	−0.1099	0.8490	0.2501	0.5178	0.2895	17.2239
	−0.1111	0.8175	0.2446	0.4951	0.2834	21.1568
	−0.1081	1.0547	0.2337	0.5815	0.2699	18.6271
Serious outer-race fault	−0.0035	0.9119	0.3916	0.6694	0.4321	15.9467
	−0.0135	1.1838	0.3972	0.8284	0.4442	13.4769
	−0.0468	1.0179	0.3876	0.6946	0.4304	19.988
	−0.0231	1.0009	0.3887	0.7131	0.4342	17.8346
	−0.03	1.0657	0.3965	0.7533	0.4433	17.228
	0.0041	0.9967	0.3921	0.7576	0.4387	11.4255
	−0.0169	0.9972	0.3727	0.7098	0.4144	17.3455
	−0.0311	1.0928	0.3804	0.7604	0.4261	22.7398
	−0.0226	1.0415	0.3886	0.7333	0.4342	23.2125
	−0.0111	0.9941	0.3875	0.7321	0.4340	22.9646
Slight ball fault	0.2136	0.5286	0.3091	0.4942	0.3175	0.9391
	0.2006	0.4239	0.2935	0.4254	0.3008	0.9505
	0.2255	0.3932	0.3093	0.4395	0.3166	0.8477
	0.2318	0.2892	0.2961	0.3894	0.3016	0.9875
	0.2353	0.4336	0.3075	0.4580	0.3144	0.9626
	0.245	0.2882	0.3101	0.4053	0.3158	0.9358
	0.2234	0.4132	0.3150	0.4592	0.3237	0.8414
	0.2308	0.4095	0.2942	0.4448	0.3009	0.934
	0.2447	0.4384	0.3159	0.4689	0.3227	0.8998
	0.2311	0.5342	0.3153	0.5191	0.3243	0.903
Serious ball fault	0.3011	0.5576	0.4128	0.6061	0.4229	0.6763
	0.2925	0.4627	0.3897	0.5352	0.3975	0.3966
	0.2533	0.6487	0.3998	0.5921	0.4105	0.5959
	0.2751	0.4947	0.3835	0.5475	0.3930	0.5489
	0.2931	0.4189	0.3927	0.5301	0.4013	0.6171
	0.2697	0.4043	0.3623	0.4861	0.3698	0.5054
	0.2823	0.4570	0.3861	0.5381	0.3952	0.5189
	0.2843	0.4149	0.3782	0.5047	0.3856	0.6314
	0.2821	0.3931	0.3873	0.4916	0.3944	0.8207
	0.2831	0.4511	0.3873	0.5228	0.3953	0.657