中国物理B ›› 2013, Vol. 22 ›› Issue (10): 100502-100502.doi: 10.1088/1674-1056/22/10/100502

• GENERAL • 上一篇    下一篇

Reliability of linear coupling synchronization of hyperchaotic systems with unknown parameters

李凡, 王春妮, 马军   

  1. Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China
  • 收稿日期:2013-02-19 修回日期:2013-04-01 出版日期:2013-08-30 发布日期:2013-08-30
  • 基金资助:
    Project supported partially by the National Natural Science Foundation of China (Grant No. 11265008).

Reliability of linear coupling synchronization of hyperchaotic systems with unknown parameters

Li Fan (李凡), Wang Chun-Ni (王春妮), Ma Jun (马军)   

  1. Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China
  • Received:2013-02-19 Revised:2013-04-01 Online:2013-08-30 Published:2013-08-30
  • Contact: Ma Jun E-mail:hyperchaos@163.com
  • Supported by:
    Project supported partially by the National Natural Science Foundation of China (Grant No. 11265008).

摘要: Complete synchronization could be reached between some chaotic and/or hyperchaotic systems under linear coupling. More generally, the conditional Lyapunov exponents are often calculated to confirm the stability of synchronization and reliability of linear controllers. In this paper, detailed proof and measurement of the reliability of linear controllers are given by constructing a Lyapunov function in the exponential form. It is confirmed that two hyperchaotic systems can reach complete synchronization when two linear controllers are imposed on the driven system unidirectionally and the unknown parameters in the driving systems are estimated completely. Finally, it gives the general guidance to reach complete synchronization under linear coupling for other chaotic and hyperchaotic systems with unknown parameters.

关键词: parameter estimation, exponential Lyapunov function, parameter observer, linear coupling

Abstract: Complete synchronization could be reached between some chaotic and/or hyperchaotic systems under linear coupling. More generally, the conditional Lyapunov exponents are often calculated to confirm the stability of synchronization and reliability of linear controllers. In this paper, detailed proof and measurement of the reliability of linear controllers are given by constructing a Lyapunov function in the exponential form. It is confirmed that two hyperchaotic systems can reach complete synchronization when two linear controllers are imposed on the driven system unidirectionally and the unknown parameters in the driving systems are estimated completely. Finally, it gives the general guidance to reach complete synchronization under linear coupling for other chaotic and hyperchaotic systems with unknown parameters.

Key words: parameter estimation, exponential Lyapunov function, parameter observer, linear coupling

中图分类号:  (Nonlinear dynamics and chaos)

  • 05.45.-a