Rolling Bearing Fault Diagnosis Based on ELCD Permutation Entropy and RVM

Table 1

The mean square error and energy of the original signal and the reconstructed signal.

Signal type	Original signal		Reconstructed signal
	Mean square error	Energy	Mean square error	Energy
Normal signal	0.0723	11.0282	0.0688	10.6203
Rolling element signal	0.1406	50.8750	0.1410	51.0342
Outer ring signal	0.6963	994.3297	0.6965	993.6019
Inner ring signal	0.2937	177.1054	0.2926	175.3812