中国物理B ›› 2011, Vol. 20 ›› Issue (1): 10506-010506.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

Ju H. Park1, S.M. Lee2, O.M. Kwon3   

  1. (1)Department of Electrical Engineering, Yeungnam University, 214-1 Dae-Dong, Kyongsan 712-749, Republic of Korea; (2)Department of Electronic Engineering, Daegu University, Gyungsan 712-714, Republic of Korea; (3)School of Electrical Engineering, Chungbuk National University, 410 SungBong-Ro, Heungduk-gu, Cheongju 361-763, Republic of Korea
  • 收稿日期:2010-06-25 修回日期:2010-09-27 出版日期:2011-01-15 发布日期:2011-01-15
  • 基金资助:
    Project supported by the Daegu University Research (Grant No. 2009).

Synchronization of chaotic Lur'e systems with delayed feedback control using deadzone nonlinearity

S.M. Leea), O.M. Kwonb), and Ju H. Parkc)   

  1. 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
  • Received:2010-06-25 Revised:2010-09-27 Online:2011-01-15 Published:2011-01-15
  • Supported by:
    Project supported by the Daegu University Research (Grant No. 2009).

摘要: 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.

关键词: Lur'e systems, synchronization, deadzone, linear matrix inequality

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.

Key words: Lur'e systems, synchronization, deadzone, linear matrix inequality

中图分类号:  (Control of chaos, applications of chaos)

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