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

Table 17

SOPDT model parameters obtained using Stark’s and Jahanmiri and Fallahi’s three-point methods, respectively.

Method ^#11: Stark (15–45–75%)	Method ^#12: Jahanmiri and Fallahi 1 (2–70–90%)	Method ^#13: Jahanmiri and Fallahi 2 (5–70–90%)
K11 = 1.0000	K12 = 1.0000	K13 = 1.0000
T11a = 2.8764 s	T12a = 3.9984 s	T13a = 4.0453 s
T11b = 0.3714 s	T12b = 0.0362 s	T13b = 0.0362 s
L11 = 0 s	L12 = 0.2220 s	L13 = 0.3310 s