A hybrid observer for linear systems under delayed sporadic measurements

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Main Authors: Marcello Guarro, Francesco Ferrante, Ricardo G. Sanfelice
Format: Artículo Open Access
Published: Wiley 2024
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author Marcello Guarro
Francesco Ferrante
Ricardo G. Sanfelice
author_facet Marcello Guarro
Francesco Ferrante
Ricardo G. Sanfelice
Marcello Guarro
Francesco Ferrante
Ricardo G. Sanfelice
collection Wiley Open Access
contents A hybrid observer for linear systems under delayed sporadic measurements Marcello Guarro Francesco Ferrante Ricardo G. Sanfelice International Journal of Robust and Nonlinear Control SummaryThis paper proposes a hybrid observer for state estimation over a network. The network provides delayed measurements of the output of the plant at time instants that are not necessarily periodic and are accompanied by timestamps provided by a clock that synchronizes with the clock of the observer in finite time. The proposed observer, along with the plant and communication network, are modeled by a hybrid dynamical system that has two timers, a logic variable, and two memory states to capture the mechanisms involved in the events associated with sampling and arrival of information, as well as the logic in the estimation algorithm. The hybrid model also includes a generic clock synchronization scheme to cope with a mismatch between the clocks at the plant and the observer. Convergence properties of the estimation error of the system are shown analytically and supported by numerical examples. 10.1002/rnc.7213 http://onlinelibrary.wiley.com/termsAndConditions#vor
doi_str_mv 10.1002/rnc.7213
format Artículo Open Access
id wiley_oa_10_1002_rnc_7213
institution Wiley Open Access
license_str_mv http://onlinelibrary.wiley.com/termsAndConditions#vor
publishDate 2024
publisher Wiley
record_format wiley_oa
spellingShingle A hybrid observer for linear systems under delayed sporadic measurements
Marcello Guarro
Francesco Ferrante
Ricardo G. Sanfelice
International Journal of Robust and Nonlinear Control
A hybrid observer for linear systems under delayed sporadic measurements Marcello Guarro Francesco Ferrante Ricardo G. Sanfelice International Journal of Robust and Nonlinear Control SummaryThis paper proposes a hybrid observer for state estimation over a network. The network provides delayed measurements of the output of the plant at time instants that are not necessarily periodic and are accompanied by timestamps provided by a clock that synchronizes with the clock of the observer in finite time. The proposed observer, along with the plant and communication network, are modeled by a hybrid dynamical system that has two timers, a logic variable, and two memory states to capture the mechanisms involved in the events associated with sampling and arrival of information, as well as the logic in the estimation algorithm. The hybrid model also includes a generic clock synchronization scheme to cope with a mismatch between the clocks at the plant and the observer. Convergence properties of the estimation error of the system are shown analytically and supported by numerical examples. 10.1002/rnc.7213 http://onlinelibrary.wiley.com/termsAndConditions#vor
title A hybrid observer for linear systems under delayed sporadic measurements
topic International Journal of Robust and Nonlinear Control
url https://onlinelibrary.wiley.com/doi/10.1002/rnc.7213