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| Received:September 27, 2003Revised:May 18, 2004 |
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| Some new criteria for lag synchronization of chaotic Lur'e systems by replacing variables control |
| Xiaofeng Wu, Yi Zhao,Xiaohua Huang |
| (Department of Mathematics, Zhongshan University, 510275 Guangzhou Guangdong, China;Guangzhou Navy Academy, 510430 Guangzhou Guangdong, China) |
| Abstract: |
| Some new criteria for the chaotic lag synchronization are proposed. At first,lag synchronization scheme for identical master-slave Lur‘ e systems by replacing variables control and the relevant error system are given, and the relations between absolute stability of the error system and the chaotic lag synchronization are described. Then, based on a quadratic Lyapunov function, two new Lur‘ e criteria for the above chaotic lag synchronization are proved. Four corresponding frequency domain criteria are further derived by means of Meyer-Kalman-Yacubovia Lemma. These frequency domain criteria are applied to analyze the lag synchronization of general master-slave Chua's circuits so that some ranges of the parameters in which the master-slave Chua's circuits achieve chaotic lag synchronization by replacing single-variable control are attained. Finally, some examples are given to verify the theoretical results. |
| Key words: Chaos synchronization Lur‘e system Chua's circuit Replacing variables control |
