Opacity is an important property in control of information flow among networked agents. In this paper, we investigate information control problems in networked discrete event systems using opacity. In a networked discrete event system, communication among agents is via a shared communication network. Since delays and losses are unavoidable in networked discrete event systems, they must be considered in investigating opacity. We call opacity under communication delays and losses network opacity. We first define three network opacities: strong network opacity, weak network opacity, and network non-opacity. We derive necessary and sufficient conditions for network opacities and develop methods to check network opacities. We then apply network opacity to solve a problem in battery management systems.
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This work was supported in part by the National Science Foundation of U.S.A. under Grant 1507096, the National Natural Science Foundation of China under Grants 61673297 and 61374058.
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Lin, F., Wang, L.Y., Chen, W. et al. Information control in networked discrete event systems and its application to battery management systems. Discrete Event Dyn Syst 30, 243–268 (2020). https://doi.org/10.1007/s10626-019-00303-y
- Information flow
- Networked systems
- Discrete event systems
- Battery management systems