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arXiv · 2403.15697

Passivity-based Attack Identification and Mitigation with Event-triggered Observer Feedback and Switching Controller

Pushkal Purohit·Anoop Jain
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Abstract

This paper addresses the problem of output consensus in linear passive multi-agent systems under a False Data Injection (FDI) attack, considering the unavailability of complete state information. Our formulation relies on an event-based cryptographic authentication scheme for sensor integrity and considers FDI attacks at the actuator end, inspired by their practical nature and usages. For secure consensus, we propose (i) a passivity-based approach for detecting FDI attacks on the system and (ii) a Zeno-free event-triggered observer-based switching controller, which switches between the normal and the defense modes following an attack detection. We show that the closed-loop system achieves practical consensus under the controller's action in the defense mode. Simulation examples are provided to support the theoretical findings.

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Pushkal Purohit, Anoop Jain. 2024-03-23. Passivity-based Attack Identification and Mitigation with Event-triggered Observer Feedback and Switching Controller. https://arxiv.org/abs/2403.15697

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