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- Title
A hybrid observer for linear systems under delayed sporadic measurements.
- Authors
Guarro, Marcello; Ferrante, Francesco; Sanfelice, Ricardo G.
- Abstract
Summary: This 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.
- Subjects
HYBRID systems; DYNAMICAL systems; TELECOMMUNICATION systems; TIMESTAMPS; NONLINEAR dynamical systems; MEASUREMENT; LINEAR systems
- Publication
International Journal of Robust & Nonlinear Control, 2024, Vol 34, Issue 10, p6610
- ISSN
1049-8923
- Publication type
Article
- DOI
10.1002/rnc.7213