A multi-observer approach for attack detection and isolation of discrete-time nonlinear systems

Tianci Yang, Carlos Murguia, Margreta Kuijper, Dragan Nešić

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Abstract

We address the problem of attack detection and isolation for a class of discrete-time nonlinear systems under (potentially unbounded) sensor attacks and measurement noise. We consider the case when a subset of sensors is subject to additive false data injection attacks. Using a bank of observers, each observer leading to an Input-to-State Stable (ISS) estimation error, we propose two algorithms for detecting and isolating sensor attacks. These algorithms make use of the ISS property of the observers to check whether the trajectories of observers are `consistent' with the attack-free trajectories of the system. Simulations results are presented to illustrate the performance of the proposed algorithms.
Original languageEnglish
Article number1806.06484v3
Number of pages7
JournalarXiv
Publication statusPublished - 18 Jun 2018
Externally publishedYes

Bibliographical note

arXiv admin note: text overlap with arXiv:1805.04242

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