On Realizing Differential-Algebraic Equations by Rational Dynamical Systems
On Realizing Differential-Algebraic Equations by Rational Dynamical Systems
复制标题
用有理动力系统实现微分代数方程
DOI:
10.1145/3476446.3535492
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Pogudin, Gleb
中科院分区:
文献类型:
--
作者:
Pavlov, Dmitrii;Pogudin, Gleb
Real-world phenomena can often be conveniently described by dynamical systems (that is, ODE systems in the state-space form). However, if one observes the state of the system only partially, the observed quantities (outputs) and the inputs of the system can typically be related by more complicated differential-algebraic equations (DAEs). Therefore, a natural question (referred to as the realizability problem) is: given a differential-algebraic equation (say, fitted from data), does it come from a partially observed dynamical system? A special case in which the functions involved in the dynamical system are rational is of particular interest. For a single differential-algebraic equation in a single output variable, Forsman has shown that it is realizable by a rational dynamical system if and only if the corresponding hypersurface is unirational, and he turned this into an algorithm in the first-order case.In this paper, we study a more general case of single-input-single-output equations. We show that if a realization by a rational dynamical system exists, the system can be taken to have the dimension equal to the order of the DAE. We provide a complete algorithm for first-order DAEs. We also show that the same approach can be used for higher-order DAEs using several examples from the literature.
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影响因子:
0.7
作者:
Thieu N. Vo;Georg Grasegger;F. Winkler
通讯作者:
F. Winkler
DOI:
10.1016/j.automatica.2018.05.007
发表时间:
2018
期刊:
Autom.
影响因子:
--
作者:
Ü. Kotta;C. Moog;M. Tõnso
通讯作者:
M. Tõnso
DOI:
--
发表时间:
1976
期刊:
Mathematical Systems Theory
影响因子:
--
作者:
H. Sussmann
通讯作者:
H. Sussmann
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
K. Forsman
通讯作者:
K. Forsman
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
B. Jakubczyk
通讯作者:
B. Jakubczyk