Journal of Electrical and Computer Engineering / 2018 / Article / Tab 4

Research Article

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

Table 4

Comparison of the theoretical value and the calculated value.

Waveletdb2Sym2Coif1bior2.2

change point 1theoretical value/s0.3
calculated value/s0.297970.297970.317970.31797
relative error/%0.67710.67715.98965.9896
change point 2theoretical value/s0.5
calculated value/s0.497970.497970.517970.51797
relative error/%0.40620.40623.59373.5937
change point 2theoretical value/s0.8
calculated value/s0.817970.817970.797970.79797
relative error/%2.24612.24610.25390.2539