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Journal Articles International Journal of Control Year : 2021

Time scale observability and constructibility of linear dynamic equations

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Bacem Ben Nasser
Mohamed Djemai
Michael Defoort
Taous-Meriem Laleg-Kirati

Abstract

This paper investigates the observability and constructibility problems of time-varying linear dynamic equations using time scale theory. First, we define observability, reachability and constructibility operators on time scales. Some necessary and sufficient conditions are proposed to ensure the observability on non-uniform time domains based on some linear algebra tools. Then, constructibility is also examined using the same approach. Moreover, the link between observability and constructibility concepts on arbitrary time sets is discussed. Further, the observability and reachability duality relationship for time-varying linear systems on time scales is established. The current work unifies and extends some existing results given for standard cases (i.e. the continuous line and the discrete time domain) to non-uniform time domains. Finally, the obtained results are described with an illustrative example.

Dates and versions

hal-03717587 , version 1 (08-07-2022)

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Bacem Ben Nasser, Mohamed Djemai, Michael Defoort, Taous-Meriem Laleg-Kirati. Time scale observability and constructibility of linear dynamic equations. International Journal of Control, 2021, pp.1-11. ⟨10.1080/00207179.2021.1890823⟩. ⟨hal-03717587⟩
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