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Unknown inputs’ adaptive observer for a class of chaotic systems with uncertainties. (English) Zbl 1187.93059

Summary: This paper treats the adaptive synchronization problem of a class of uncertain chaotic systems with uncertainties and unknown inputs in the drive-response framework. A robust adaptive sliding mode observer-based response system is designed to synchronize a given chaotic system without the knowledge of upper bounds of uncertainties and unknown inputs. Further, the unknown inputs can be approximately recovered directly by the concept of equivalent control signal. To highlight our method, we improve the robustness of ciphering in a secure communication system. Computer simulation is also given for the purpose of illustration and verification.

MSC:

93C40 Adaptive control/observation systems
93D20 Asymptotic stability in control theory
37D45 Strange attractors, chaotic dynamics of systems with hyperbolic behavior
37N35 Dynamical systems in control
93B07 Observability
Full Text: DOI

References:

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