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

Table 1

Mutual information resulted from the simulation signal for different wavelets.

Wavelet function	Mutual information	Wavelet function	Mutual information	Wavelet function	Mutual information
Haar	20.325	Coif5	24.302	Bior2.6	24.284
Db2	24.268	Sym2	24.288	Bior4.4	24.241
Db4	24.297	Sym3	24.273	Bior5.5	24.279
Db6	24.307	Sym4	24.257	Bior6.8	24.264
Db8	24.294	Sym5	24.274	rBio1.3	24.277
Db10	24.313	Sym6	24.273	rBio2.4	24.254
Coif1	24.265	Sym7	24.280	rBio2.6	24.274
Coif2	24.245	Sym8	24.284	rBio4.4	24.257
Coif3	24.286	Bior1.3	20.317	rBio5.5	24.280
Coif4	24.265	Bior2.4	24.280	rBio6.8	24.296