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Improved Global Asymptotical Synchronization of Chaotic Lur'e Systems With Sampled-Data Control

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3 Author(s)
Chuan-Ke Zhang ; Sch. of Inf. Sci. & Eng., Central South Univ., Changsha ; Yong He ; Min Wu

This brief investigates the global asymptotical synchronization problem of chaotic Lur'e systems with sampled-data control. Based on a time-varying delay system transformed from the sampled-data error system, an augmented Lyapunov functional containing some useful system information is constructed, no useful terms in the derivative of the Lyapunov functional are ignored, and the relationship among the time-varying delay, its upper bound, and their difference is taken into account. A less conservative delay-dependent synchronization criterion expressed in terms of linear matrix inequalities is obtained. The effectiveness and merits of the proposed method are finally illustrated via numerical simulations for Chua's circuits.

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IEEE Transactions on Circuits and Systems II: Express Briefs  (Volume:56 ,  Issue: 4 )