Rolling Bearing Fault Diagnosis Method Based on Multisynchrosqueezing S Transform and Faster Dictionary Learning

Table 3

Rényi entropy of different frequency analysis methods.

Dataset	Fault type	Method
		STFT	ST	WVT	SSST	MSST	MSSST
CWRU	Normal	17.9889	16.9369	16.3525	12.6381	11.5885	10.6908
	Inner race	17.7992	16.8018	16.9188	12.7815	12.7316	11.8420
	Ball	17.1826	16.6566	16.4919	12.1864	11.2877	10.6046
	Outer race	17.6826	17.1549	16.3112	12.8543	12.2866	11.4123
MFPT	Normal	19.5311	18.5683	17.8579	14.8126	14.5465	12.4836
	Inner race	19.0094	18.3162	18.2588	14.6791	13.7552	11.1386
	Outer race	19.9868	19.3678	19.0506	14.4431	13.6602	11.9499