Influence of the Selection of Reaction Curve’s Representative Points on the Accuracy of the Identified Fractional-Order Model

Table 24

Relative performance index-based comparison between some considered fractional-order model identification methods for process P₂.

Compared methods	Sxy = Sx/Sy
Method ^#2-method ^#1	S21 = S2/S1 = 1.40
Method ^#3-method ^#1	S31 = S3/S1 = 1.74
Method ^#4-method ^#1	S41 = S4/S1 = 2.19
Method ^#5-method ^#1	S51 = S5/S1 = 2.57
Method ^#6-method ^#1	S61 = S6/S1 = 2.80
Method ^#7-method ^#1	S71 = S7/S1 = 1.81
Method ^#8-method ^#1	S81 = S8/S1 = 2.97
Method ^#9-method ^#1	S91 = S9/S1 = 1.06