Journal of Electrical and Computer Engineering / 2018 / Article / Tab 7

Research Article

Change Point Detection for Piecewise Envelope Current Signal Based on Wavelet Transform

Table 7

Comparison of envelope method with different wavelets.

WaveletMaximum modulusAverage modulusRelative error/%Average time/s

db20.16880.010116.66350.85530.2278
0.132213.05222.4698
Sym20.16880.010116.66350.85530.2326
0.132213.05222.4698
Coif10.11700.009811.94681.03100.2504
0.128213.08692.6637
bior2.20.11050.008912.36201.03100.2688
0.119513.36732.6637