Application of Feature Fusion Using Coaxial Vibration Signal for Diagnosis of Rolling Element Bearings

Table 2

Mean values of the Rényi entropy.

Sensor location	1	2	3	4	5	6	7	8
	N	I-D	B-D	O6-D	I-F	B-F	O3-F	O12-F
Without denoise
Drive end	2.5928	1.2033	1.0874	1.5331	1.6016	1.8180	1.7362	1.6746
Fan end	2.5244	1.9789	2.0922	1.6853	1.9023	1.3981	1.7274	1.4613
Autocorrelation denoise
Drive end	1.9548	0.4336	0.2008	0.4485	1.0307	1.4850	1.2504	1.0036
Variation (%)	24.61	63.96	81.53	70.74	35.65	18.32	27.98	40.07
Fan end	1.9314	1.4479	1.6025	0.4397	1.2879	0.4887	0.5916	0.5036
Variation (%)	23.49	26.83	23.41	73.91	32.30	65.05	65.75	65.54