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Chin. Phys. B, 2011, Vol. 20(1): 010506    DOI: 10.1088/1674-1056/20/1/010506
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Synchronization of chaotic Lur'e systems with delayed feedback control using deadzone nonlinearity

S.M. Leea), O.M. Kwonb), and Ju H. Parkc)
a Department of Electronic Engineering, Daegu University, Gyungsan 712-714, Republic of Korea; b School of Electrical Engineering, Chungbuk National University, 410 SungBong-Ro, Heungduk-gu, Cheongju 361-763, Republic of Korea; c Department of Electrical Engineering, Yeungnam University, 214-1 Dae-Dong, Kyongsan 712-749, Republic of Korea
Abstract  In this paper we present a synchronization method for chaotic Lur'e systems by constructing a new piecewise Lyapunov function. Using a delayed feedback control scheme, a delay-dependent stability criterion is derived for the synchronization of chaotic systems that are represented by Lur'e systems with deadzone nonlinearity. Based on the Lyapunov–Krasovskii functional and by using some properties of the nonlinearity, a new delay-dependent stabilization condition for synchronization is obtained via linear matrix inequality (LMI) formulation. The criterion is less conservative than existing ones, and it will be verified through a numerical example.
Keywords:  Lur'e systems      synchronization      deadzone      linear matrix inequality  
Received:  25 June 2010      Revised:  27 September 2010      Accepted manuscript online: 
PACS:  05.45.Gg (Control of chaos, applications of chaos)  
Fund: Project supported by the Daegu University Research (Grant No. 2009).

Cite this article: 

S.M. Lee, O.M. Kwon, and Ju H. Park Synchronization of chaotic Lur'e systems with delayed feedback control using deadzone nonlinearity 2011 Chin. Phys. B 20 010506

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