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Martínez-Fuentes, Oscar; Díaz-Muñoz, Jonathan Daniel; Muñoz-Vázquez, Aldo Jonathan; Tlelo-Cuautle, Esteban; Fernández-Anaya, Guillermo; Cruz-Vega, Israel
Chaos, solitons and fractals, February 2024, 2024-02-00, Letnik: 179Journal Article
In the context of different applications demanding fast, secure, and accurate chaotic systems synchronization, this article is concerned with improving the security and timeliness of chaotic synchronization schemes in chaotic secure information transmission. Firstly, we introduce five control laws designed to achieve predefined-time chaotic synchronization within a master–slave scheme, employing a generalized Lorenz-type systems family as the chaotic model, guaranteeing that the chaotic systems achieve synchronization before a known predefined time. We apply the synchronization scheme in a practical application to validate its performance by implementing a secure communication system for image encryption on Raspberry Pi, using the MQTT protocol for transmission. We present system experimental results and evaluate its performance using diverse metrics, including errors, correlation, variance, and statistical tests like entropy, NPCR, and UACI. •A family of predefined-time controllers (PTC) to synchronize Lorenz-type systems.•Lyapunov analysis gives conditions for the design and convergence of PTC algorithms.•MQTT protocol for predefined-time transmission is implemented on Raspberry Pi.•Numerical and experimental results show the feasibility of the theory.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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