TY - JOUR

T1 - Iterative parameter identification algorithms for transformed dynamic rational fraction input–output systems

AU - Miao, Guangqin

AU - Ding, Feng

AU - Liu, Qinyao

AU - Yang, Erfu

N1 - Publisher Copyright:
© 2023 Elsevier B.V.

PY - 2023/12/15

Y1 - 2023/12/15

N2 - The rational fraction system is a special nonlinear system, the existence of the denominator polynomial leads to the difficulty of identifying rational fraction models. Inspired by the gradient search and the Newton method, the gradient-based iterative algorithm and Newton iterative algorithm are presented to estimate the parameters of rational fraction system models. Furthermore, in order to avoid a large amount of calculation and complex equations encountered in the process of solving partial derivatives, the model transformation-based gradient iterative algorithm and the model transformation-based Newton iterative algorithm are proposed for parameter identification. Two examples are carried out to show the effectiveness of the proposed algorithms. This paper focuses on solving the identification problem of rational fraction systems.

AB - The rational fraction system is a special nonlinear system, the existence of the denominator polynomial leads to the difficulty of identifying rational fraction models. Inspired by the gradient search and the Newton method, the gradient-based iterative algorithm and Newton iterative algorithm are presented to estimate the parameters of rational fraction system models. Furthermore, in order to avoid a large amount of calculation and complex equations encountered in the process of solving partial derivatives, the model transformation-based gradient iterative algorithm and the model transformation-based Newton iterative algorithm are proposed for parameter identification. Two examples are carried out to show the effectiveness of the proposed algorithms. This paper focuses on solving the identification problem of rational fraction systems.

KW - Gradient search

KW - Model transformation

KW - Newton search

KW - Parameter identification

KW - Rational fraction system

UR - http://www.scopus.com/inward/record.url?scp=85159853645&partnerID=8YFLogxK

U2 - 10.1016/j.cam.2023.115297

DO - 10.1016/j.cam.2023.115297

M3 - Article

AN - SCOPUS:85159853645

SN - 0377-0427

VL - 434

JO - Journal of Computational and Applied Mathematics

JF - Journal of Computational and Applied Mathematics

M1 - 115297

ER -