Preserving the DAE structure in the Loewner model reduction and identification framework
Preserving the DAE structure in the Loewner model reduction and identification framework
复制标题
在 Loewner 模型简化和识别框架中保留 DAE 结构
DOI:
10.1007/s10444-020-09752-8
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发表时间:
2020
影响因子:
1.7
通讯作者:
Antoulas, Athanasios C.
中科院分区:
文献类型:
--
作者:
Gosea, Ion Victor;Zhang, Qiang;Antoulas, Athanasios C.
We propose an extension of the Loewner framework to descriptor linear systems that preserves the DAE (differential algebraic equation) structure of the underlying system. More precisely, by means of post-processing the data, the behavior at infinity is matched. As it turns out, the conventional procedure constructs a reduced model by directly compressing the data and hence losing information at infinity. By transforming the matrix pencil composed of the E and A matrices into a generalized block diagonal form, we can separate the descriptor system into two subsystems; one corresponding to the polynomial part and the other to the strictly proper part of the transfer function. Different algorithms are implemented to transform the matrix pencil into block diagonal form. Furthermore, a data-driven splitting of the descriptor system can be achieved in the Loewner framework. Hence, the coefficients of the polynomial part can be estimated directly from data. Several numerical examples are presented to illustrate the theoretical discussion.
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影响因子:
3.1
作者:
Antoulas, A. C.;Gosea, I. V.;Ionita, A. C.
通讯作者:
Ionita, A. C.
DOI:
--
发表时间:
2006
期刊:
at - Automatisierungstechnik
影响因子:
--
作者:
V. Mehrmann;T. Stykel
通讯作者:
T. Stykel
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
Steffen W. R. Werner
通讯作者:
Steffen W. R. Werner
DOI:
10.1007/978-3-319-46618-7_3
发表时间:
2017
期刊:
--
影响因子:
--
作者:
P. Benner;T. Stykel
通讯作者:
P. Benner;T. Stykel
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
B. Kågström
通讯作者:
B. Kågström