An Integrated Cumulative Transformation and Feature Fusion Approach for Bearing Degradation Prognostics

Table 4

Prediction error comparison of different degradation indexes.

Degradation index	MAPE	RMSE	Degradation index	MAPE	RMSE
Kurtosis	0.1643	1.0213	C-Kurtosis	0.0059	0.0625
RMS	0.1425	0.8548	C-RMS	0.0131	0.0051
WPE2	0.0815	0.0056	C-WPE2	0.0052	0.0032
Fused index	0.0799	0.0455	C-Fused Index	0.0226	0.0149