Data-driven model reduction by two-sided moment matching
File(s)1-s2.0-S0005109824001961-main.pdf (766.66 KB)
Published version
Author(s)
Mao, Junyu
Scarciotti, Giordano
Type
Journal Article
Abstract
In this brief paper, we propose a time-domain data-driven method for model order reduction by
two-sided moment matching for linear systems. An algorithm that asymptotically approximates a key
interpolation matrix from time-domain samples of the so-called two-sided interconnection is provided.
Exploiting this estimated interpolation matrix, we determine the unique reduced-order model of order
ν, which asymptotically matches the moments at 2ν distinct interpolation points. Furthermore, we
discuss the impact that certain disturbances and data distortions may have on the algorithm. Finally,
we illustrate the use of the proposed methodology by means of a benchmark model.
two-sided moment matching for linear systems. An algorithm that asymptotically approximates a key
interpolation matrix from time-domain samples of the so-called two-sided interconnection is provided.
Exploiting this estimated interpolation matrix, we determine the unique reduced-order model of order
ν, which asymptotically matches the moments at 2ν distinct interpolation points. Furthermore, we
discuss the impact that certain disturbances and data distortions may have on the algorithm. Finally,
we illustrate the use of the proposed methodology by means of a benchmark model.
Date Issued
2024-08
Date Acceptance
2024-04-08
Citation
Automatica, 2024, 166
ISSN
0005-1098
Publisher
Elsevier
Journal / Book Title
Automatica
Volume
166
Copyright Statement
© 2024 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/).
(http://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.sciencedirect.com/science/article/pii/S0005109824001961
Publication Status
Published
Article Number
111702
Date Publish Online
2024-05-19