Single Feature Extraction Method of Bearing Fault Signals Based on Slope Entropy

Table 2

The mean and AMMD of different features.

Entropy	Type	100	108	121	133	147	160
PE	Mean	2.4693	2.9093	2.6961	2.8296	2.4503	2.7676
	AMMD	0.019
WPE	Mean	0.6214	0.8406	0.7852	0.8016	0.7414	0.7856
	AMMD	0.0004
DE	Mean	0.7635	0.8968	0.8452	0.6769	0.7302	0.8086
	AMMD	0.0366
FDE	Mean	0.5751	0.7666	0.7435	0.6117	0.6624	0.7192
	AMMD	0.0231
RDE	Mean	0.0302	0.0122	0.0169	0.1134	0.0312	0.026
	AMMD	0.001
SloE	Mean	0.1529	4.3098	3.7154	4.0954	3.3072	3.9055
	AMMD	0.1901