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

Table 8

Parameters {p_i, q_i} of the rational function f₂(α) for the different sets of symmetrical points.

5–50–95%	10–50–90%	15–50–85%	20–50–80%	25–50–75%	30–50–70%
p1 = 0.06589	p1 = 0.2417	p1 = 0.9406	p1 = 9746	p1 = 1.715·10^4	p1 = 3.691·10^4
p2 = −0.03054	p2 = −0.0986	p2 = −0.3488	p2 = −3199	p2 = −3675	p2 = −426.5
q1 = −2.23	q1 = −2.338	q1 = −2.722	q1 = −5405	q1 = −1.074·10^4	q1 = −3.276·10^4
q2 = 1.333	q2 = 1.651	q2 = 2.745	q2 = 1.445·10^4	q2 = 2.544·10^4	q2 = 6.349·10^4