Data-based System Representations from Irregularly Measured Data

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  • Institució Catalana de Recerca i Estudis Avançats (ICREA)
  • International Centre for Numerical Methods in Engineering
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OriginalspracheEnglisch
Seiten (von - bis)1-16
Seitenumfang16
FachzeitschriftIEEE Transactions on Automatic Control
PublikationsstatusVeröffentlicht - 4 Juli 2024

Abstract

Non-parametric representations of dynamical systems based on the image of a Hankel matrix of data are extensively used for data-driven control. However, if samples of data are missing, obtaining such representations becomes a difficult task. By exploiting the kernel structure of Hankel matrices of irregularly measured data generated by a linear time-invariant system, we provide computational methods for which any complete finite-length behavior of the system can be obtained. For the special case of periodically missing outputs, we provide conditions on the input such that the former result is guaranteed. In the presence of noise in the data, our method returns an approximate finite-length behavior of the system. We illustrate our result with several examples, including its use for approximate data completion in real-world applications and compare it to alternative methods.

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Data-based System Representations from Irregularly Measured Data. / Alsalti, Mohammad Salahaldeen Ahmad; Markovsky, Ivan; Lopez Mejia, Victor Gabriel et al.
in: IEEE Transactions on Automatic Control, 04.07.2024, S. 1-16.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Alsalti MSA, Markovsky I, Lopez Mejia VG, Müller MA. Data-based System Representations from Irregularly Measured Data. IEEE Transactions on Automatic Control. 2024 Jul 4;1-16. doi: 10.48550/arXiv.2307.11589, 10.1109/TAC.2024.3423053
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