Non-Weighted L 2-Gain Analysis for Synchronization of Switched Nonlinear Time-Delay Systems With Random Injection Attacks
IEEE Transactions on Circuits and Systems I: Regular Papers(2023)
Abstract
The current paper is devoted to studying global asymptotic
$H_{\infty }$
drive-response synchronization for a kind of switched nonlinear time-delay systems with output random injection attacks (IAs). An attack-decomposition method is proposed to derive an attack-free signal, by which an observer is designed to estimate the state of the driving system. Then, two mode-dependent event-triggering mechanisms (MDETMs) are respectively designed for observer-controller (O-C) and controller-actuator (C-A) channels to save the communication resources as much as possible. In order to analyze the effects of the switching on the
$H_{\infty }$
performance, a mode-dependent discretized Lyapunov-Krasovskii functional (LKF) is developed, which has the merit of monotone decreasing on any time-interval and switching instants. Sufficient criteria are given to ensure the
$H_{\infty }$
synchronization with non-weighted
$\mathcal {L}_{2}$
-gain, whether the attack is related to the output or not. Numerical simulations are provided to verify the non-weighted
$\mathcal {L}_{2}$
-gain performance with low conservatism.
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Key words
synchronization,non-weighted,time-delay
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