中国物理B ›› 2011, Vol. 20 ›› Issue (4): 40510-040510.doi: 10.1088/1674-1056/20/4/040510

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Cascade adaptive control of uncertain unified chaotic systems

王京1, 魏伟2, 李东海3   

  1. (1)Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China; (2)School of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, China; (3)State Key Lab of Power Systems, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
  • 收稿日期:2010-09-06 修回日期:2010-11-18 出版日期:2011-04-15 发布日期:2011-04-15
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2007CB210106).

Cascade adaptive control of uncertain unified chaotic systems

Wei Wei(魏伟)a)†, Li Dong-Hai(李东海) b), and Wang Jing(王京)c)   

  1. a School of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, China; b State Key Lab of Power Systems, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China; c Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2010-09-06 Revised:2010-11-18 Online:2011-04-15 Published:2011-04-15
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2007CB210106).

摘要: The chaos control of uncertain unified chaotic systems is considered. Cascade adaptive control approach with only one control input is presented to stabilize states of the uncertain unified chaotic system at the zero equilibrium point. Since an adaptive controller based on dynamic compensation mechanism is employed, the exact model of the unified chaotic system is not necessarily required. By choosing appropriate controller parameters, chaotic phenomenon can be suppressed and the response speed is tunable. Sufficient condition for the asymptotic stability of the approach is derived. Numerical simulation results confirm that the cascade adaptive control approach with only one control signal is valid in chaos control of uncertain unified chaotic systems.

关键词: unified chaotic systems, cascade adaptive control approach, response speed, chaos control

Abstract: The chaos control of uncertain unified chaotic systems is considered. Cascade adaptive control approach with only one control input is presented to stabilize states of the uncertain unified chaotic system at the zero equilibrium point. Since an adaptive controller based on dynamic compensation mechanism is employed, the exact model of the unified chaotic system is not necessarily required. By choosing appropriate controller parameters, chaotic phenomenon can be suppressed and the response speed is tunable. Sufficient condition for the asymptotic stability of the approach is derived. Numerical simulation results confirm that the cascade adaptive control approach with only one control signal is valid in chaos control of uncertain unified chaotic systems.

Key words: unified chaotic systems, cascade adaptive control approach, response speed, chaos control

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

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