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

Table 7

The results of using different trial numbers (NR) using PIEEMD (SNR = 10) for direction.

NR	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
100
Margin	1.1627	1.0881	0.8863	1.2660	0.8095	0.6854	1.1806	0.8123	0.8628	0.9342	0.8768	0.9274
Success rate	100	100	100	100	100	87.5	100	100	100	100	100	100
90
Margin	1.1584	1.0700	0.8506	1.2383	0.7776	0.7356	1.1625	0.8339	0.8704	0.9009	0.8886	0.9049
Success rate	100	100	100	100	93.8	93.8	100	93.8	100	100	100	100
70
Margin	1.1714	1.0856	0.8575	1.2234	0.7344	0.7043	1.1347	0.7825	0.8819	0.8238	0.8668	0.9005
Success rate	100	100	100	100	93.8	87.5	100	93.8	100	93.8	100	100
50
Margin	1.1487	1.0633	0.8858	1.2563	0.7450	0.7244	1.1732	0.8410	0.8700	0.8748	0.8685	0.9103
Success rate	100	100	100	100	93.8	87.5	100	93.8	100	100	100	100
30
Margin	1.1586	1.1026	0.8378	1.2413	0.8442	0.6353	1.1698	0.8271	0.9037	0.8861	0.9065	0.9346
Success rate	100	100	100	100	93.8	81.3	100	87.5	100	100	100	100