Event-triggered controllers using contraction analysis

In this paper, we introduce an event-triggered control method that relies on contraction analysis. Contraction analysis considers stability with respect to a nominal trajectory rather than an equilibrium point. If two neighboring trajectories of a system are located in a contraction region, they wil...

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Bibliographic Details
Published in:International journal of control 2024-07, p.1-17
Main Authors: Bidegaray-Fesquet, Brigitte, Meslem, Nacim, Zobiri, Fairouz
Format: Article
Language:English
Subjects:
Automatic
Engineering Sciences
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Summary:In this paper, we introduce an event-triggered control method that relies on contraction analysis. Contraction analysis considers stability with respect to a nominal trajectory rather than an equilibrium point. If two neighboring trajectories of a system are located in a contraction region, they will tend to each other and to a nominal trajectory. In the event-triggered control algorithm that we introduce, we suggest to update the control law whenever the system trajectory is about to leave the contraction region. We show that such a scheduling of the control law guarantees system stability, and we show that a minimum inter-event time exists between consecutive updates of the control law. We also show how to place the system trajectory in a contraction region and discuss the conditions of existence of the required transformation to perform that.
ISSN:0020-7179
1366-5820
DOI:10.1080/00207179.2024.2379580