This study tackles the reliable reachable set synthesis issue for a class of hidden semi-Markov jump systems (HSMJSs). Due to the inaccessibility of system states and the asynchronous phenomenon in the information transmission process, the study of HSMJSs faces significant challenges. To address these challenges, a state observer is designed, and a dynamic event-triggered mechanism based on the observed signal is introduced to effectively alleviate the communication load. In addition, the security of the network channel can be easily compromised by denial-of-service attacks. To mitigate these issues, a secure asynchronous controller (SAC) is constructed based on an observer and a hidden Markov model. Then, the reachable set boundaries are derived by combining the designed observer and the SAC. The gains of the controller and the observer are attained. Finally, a circuit model is provided to demonstrate the validity and practicability of the proposed approach.
Liang Zhang, Zhihao Shen, Ben Niu et al.· IEEE Transactions on Reliabi...· 1 citation
This article investigates the asynchronous mixed $H_{\infty } $ and passive control for discrete-time switched systems subject to denial-of-service (DoS) attacks and communication resource constraints. In order to alleviate the communication pressure, an event-triggered mechanism (ETM) is adopted. However, due to the introduction of ETM, the asynchronous phenomenon may occur between the subsystem and controller. In addition, DoS attacks can have adverse effects on system performance by interfering with communication channels. To address the above issues, a weighted mixed $H_{\infty } $ and passivity performance criterion is adopted to balance disturbance attenuation and energy dissipation. On this basis, the Lyapunov function method is used to design the average dwell time (ADT) switching signal, ensuring that the asynchronous switched system is globally uniformly asymptotically stable (GUAS). Meanwhile, the design strategy of the controller is presented in the form of linear matrix inequalities (LMIs). Finally, the effectiveness of the proposed method is demonstrated through a practical example.
Liang Zhang, Jing Liang, N. Zhao et al.· IEEE Transactions on Cyberne...· 1 citation
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