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

Table 19

Relative performance index-based comparison between some considered identification methods for process P_1,5.

Compared methods	Sx,y = Sx/Sy
Method ^#2-method ^#1	S2,1 = S2/S1 = 1.94
Method ^#3-method ^#1	S3,1 = S3/S1 = 2.30
Method ^#4-method ^#1	S4,1 = S4/S1 = 2.81
Method ^#5-method ^#1	S5,1 = S5/S1 = 3.17
Method ^#6-method ^#1	S6,1 = S6/S1 = 3.45
Method ^#7-method ^#1	S7,1 = S7/S1 = 7.69
Method ^#7-method ^#5	S7,5 = S7/S5 = 2.42
Method ^#8-method ^#1	S8,1 = S8/S1 = 8.10
Method ^#8-method ^#6	S8,6 = S8/S6 = 2.35
Method ^#9-method ^#1	S9,1 = S9/S1 = 17.76
Method ^#9-method ^#5	S9,5 = S9/S5 = 5.60
Method ^#10-method ^#1	S10,1 = S10/S1 = 16.75
Method ^#10-method ^#6	S10,6 = S10/S6 = 4.85
Method ^#11-method ^#1	S11,1 = S11/S1 = 8.57
Method ^#11-method ^#3	S11,3 = S11/S3 = 3.72
Method ^#12-method ^#1	S12,1 = S12/S1 = 11.89
Method ^#12-method ^#2	S12,2 = S12/S2 = 6.12
Method ^#13-method ^#1	S13,1 = S13/S1 = 14.07
Method ^#13-method ^#2	S13,2 = S13/S2 = 7.25