Distance and Density Similarity Based Enhanced -NN Classifier for Improving Fault Diagnosis Performance of Bearings

Table 4

Diagnostic performance of the two classifiers for different fault types and datasets.

=  ?	Model	BFI	BFO	BFR	BFIO	BFOR	BFIR	BFIOR	FFB	Avg. classification accuracy (%)
Dataset 1: 300 rpm, 3 mm crack
	-NN	94.65	79.50	96.42	98.53	95.67	97.08	91.67	100.00	94.19
	Enhanced -NN	95.70	87.24	98.75	99.58	96.25	99.92	93.08	100.00	96.32
	-NN	72.52	75.61	92.35	91.35	89.25	96.08	94.53	100.00	88.96
	Enhanced -NN	96.25	92.35	99.45	98.25	99.50	97.92	96.25	100.00	97.50
	-NN	98.76	78.50	97.75	96.25	90.75	94.92	87.42	99.83	93.02
	Enhanced -NN	99.05	94.56	98.65	98.96	98.42	97.56	91.56	99.89	97.33
	-NN	89.76	80.56	91.53	97.45	95.26	98.12	92.54	100.00	93.15
	Enhanced -NN	98.68	94.56	98.16	98.56	99.92	99.92	93.89	100.00	97.96
Dataset 2: 350 rpm, 3 mm crack
	-NN	93.56	78.52	94.25	97.86	94.58	97.12	92.35	98.68	93.37
	Enhanced -NN	95.59	88.45	99.02	98.95	96.12	99.43	93.56	99.26	96.30
	-NN	73.48	76.53	90.89	90.75	87.62	96.89	95.42	100.00	88.95
	Enhanced -NN	96.45	93.25	98.45	98.75	98.69	96.25	95.86	100.00	97.21
	-NN	98.48	81.52	96.53	95.48	91.48	93.28	89.45	99.89	93.26
	Enhanced -NN	99.75	95.48	98.15	98.75	97.98	98.06	92.56	100.00	97.59
	-NN	94.58	84.83	94.25	96.53	94.56	97.85	92.56	100.00	94.40
	Enhanced -NN	98.65	95.69	98.75	98.45	99.05	98.45	94.12	100.00	97.90
Dataset 3: 300 rpm, 12 mm crack
	-NN	97.05	86.52	98.45	98.53	96.98	97.08	93.58	100.00	96.02
	Enhanced -NN	97.45	93.56	100.00	99.58	98.46	99.92	95.26	100.00	98.03
	-NN	78.96	81.45	91.75	92.86	88.46	95.63	94.53	100.00	90.46
	Enhanced -NN	98.96	95.86	99.26	99.43	99.50	98.76	96.25	100.00	98.50
	-NN	98.76	86.46	97.75	96.25	95.36	96.46	94.85	99.83	95.72
	Enhanced -NN	100.00	98.12	100.00	99.79	99.86	98.75	96.53	100.00	99.13
	-NN	89.76	81.65	91.47	96.85	94.62	97.45	90.67	100.00	92.81
	Enhanced -NN	100.00	98.45	100.00	100.00	99.45	99.92	93.89	100.00	98.96
Dataset 4: 350 rpm, 12 mm crack
	-NN	99.16	99.56	99.48	100.00	100.00	98.54	98.65	100.00	99.42
	Enhanced -NN	99.86	100.00	100.00	100.00	100.00	99.75	99.46	100.00	99.88
	-NN	89.45	80.54	93.25	92.45	90.74	95.86	98.56	100.00	92.61
	Enhanced -NN	100.00	100.00	99.86	100.00	99.94	99.75	99.46	100.00	99.88
	-NN	98.76	89.45	97.75	96.25	94.52	97.63	96.25	99.83	96.31
	Enhanced -NN	99.80	100.00	100.00	100.00	100.00	99.75	99.70	100.00	99.91
	-NN	97.84	84.25	96.57	94.56	95.26	98.12	95.68	100.00	95.29
	Enhanced -NN	100.00	100.00	99.86	100.00	99.94	99.75	99.46	100.00	99.88