Performance Improvement of Ensemble Empirical Mode Decomposition for Roller Bearings Damage Detection

Table 4

The Margin calculated using EEMD with different amplitudes ( direction).

Method	Noise; amplitude	100 Hz; 1.0 kN	100 Hz; 1.4 kN	100 Hz; 1.8 kN	200 Hz; 1.0 kN	200 Hz; 1.4 kN	200 Hz; 1.8 kN	300 Hz; 1.0 kN	300 Hz; 1.4 kN	300 Hz; 1.8 kN	400 Hz; 1.0 kN	400 Hz; 1.4 kN	400 Hz; 1.8 kN
EMD	—	1.1684	1.0417	0.6961	1.2276	0.8157	0.7156	0.9656	0.7523	0.8620	0.8438	0.7013	0.7109
EEMD	0.3	1.2248	1.1168	0.8136	1.3011	0.8000	0.6922	1.2131	0.8100	0.9289	1.0498	0.8895	0.9143
EEMD	0.5	1.2162	1.1324	0.8112	1.3009	0.7000	0.6372	1.2868	1.0633	0.9100	0.8995	0.8779	0.9069
EEMD	0.6	1.2388	1.1706	0.7633	1.3019	0.7693	0.7099	1.2880	1.0276	0.9312	0.9056	0.8980	0.9543
SNR	10	1.1627	1.0881	0.8863	1.2660	0.8095	0.6854	1.1806	0.8123	0.8628	0.9342	0.8768	0.9274
SNR	20	1.2519	1.1192	0.7303	1.2750	0.9342	0.7749	1.0344	0.6806	0.8959	0.8668	0.8547	0.7864