中国物理B ›› 2010, Vol. 19 ›› Issue (1): 10508-010508.doi: 10.1088/1674-1056/19/1/010508

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A simple method to simultaneously achieve synchronization andanti-synchronization in chaotic systems

李瑞红1, 陈为胜1, 李爽2   

  1. (1)Department of Applied Mathematics, Xidian University, Xi'an 710071, China; (2)School of Statistics, Xi'an University of Finance and Economics, Xi'an 710100, China
  • 收稿日期:2009-04-29 修回日期:2009-06-12 出版日期:2010-01-15 发布日期:2010-01-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 60804021).

A simple method to simultaneously achieve synchronization and anti-synchronization in chaotic systems

Li Rui-Hong(李瑞红)a)† , Chen Wei-Sheng(陈为胜)a), and Li Shuang(李爽) b)   

  1. a Department of Applied Mathematics, Xidian University, Xi'an 710071, China; b School of Statistics, Xi'an University of Finance and Economics, Xi'an 710100, China
  • Received:2009-04-29 Revised:2009-06-12 Online:2010-01-15 Published:2010-01-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 60804021).

摘要: In this paper, a novel adaptive control approach is presented to simultaneously achieve synchronization and anti-synchronization in partially linear chaotic systems. Through appropriately separating state vectors of such systems, synchronization and anti-synchronization could be simultaneously realized in different subspaces, which may be strictly proven theoretically. Simulation results for a Lorenz chaotic system and a new hyper-chaotic system are provided to illustrate the effectiveness of the proposed method. Finally, a new secure communication scheme based on such a synchronization phenomenon of the hyper-chaotic system is demonstrated. Numerical results show success in transmitting a periodic signal with high security.

Abstract: In this paper, a novel adaptive control approach is presented to simultaneously achieve synchronization and anti-synchronization in partially linear chaotic systems. Through appropriately separating state vectors of such systems, synchronization and anti-synchronization could be simultaneously realized in different subspaces, which may be strictly proven theoretically. Simulation results for a Lorenz chaotic system and a new hyper-chaotic system are provided to illustrate the effectiveness of the proposed method. Finally, a new secure communication scheme based on such a synchronization phenomenon of the hyper-chaotic system is demonstrated. Numerical results show success in transmitting a periodic signal with high security.

Key words: synchronization and anti-synchronization, adaptive control, secure communication

中图分类号:  (Synchronization; coupled oscillators)

  • 05.45.Xt
05.45.Gg (Control of chaos, applications of chaos) 05.45.Pq (Numerical simulations of chaotic systems)