Mutual Information-Assisted Wavelet Function Selection for Enhanced Rolling Bearing Fault Diagnosis

Table 2

Mutual information of the extracted bearing vibration signal using different wavelets.

Wavelet function	Mutual information	Wavelet function	Mutual information	Wavelet function	Mutual information
Haar	17.007	Coif5	20.737	Bior2.6	20.801
Db2	20.781	Sym2	20.781	Bior4.4	20.762
Db4	20.740	Sym3	20.783	Bior5.5	20.765
Db6	20.771	Sym4	20.788	Bior6.8	20.773
Db8	20.772	Sym5	20.797	rBio1.3	20.879
Db10	20.762	Sym6	20.760	rBio2.4	20.741
Coif1	20.766	Sym7	20.783	rBio2.6	20.805
Coif2	20.795	Sym8	20.801	rBio4.4	20.760
Coif3	20.777	Bior1.3	16.953	rBio5.5	20.776
Coif4	20.764	Bior2.4	20.770	rBio6.8	20.789