中国物理B ›› 2013, Vol. 22 ›› Issue (6): 60508-060508.doi: 10.1088/1674-1056/22/6/060508

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Controlling hyperchaotic complex systems with unknown parameters based on adaptive passive method

Gamal M. Mahmouda, Emad E. Mahmoudb c, Ayman A. Arafab   

  1. a Department of Mathematics, Faculty of Science, Taibah University, Al-Madeenah Al-Munawwarah, P. O. Box 344, Kingdom of Saudi Arabia;
    b Department of Mathematics, Faculty of Science, Sohag University, Sohag 82524, Egypt;
    c College of Applied Medical Sciences, Turabah, Taif University, Kingdom of Saudi Arabia
  • 收稿日期:2012-10-07 修回日期:2012-12-16 出版日期:2013-05-01 发布日期:2013-05-01

Controlling hyperchaotic complex systems with unknown parameters based on adaptive passive method

Gamal M. Mahmouda, Emad E. Mahmoudb c, Ayman A. Arafab   

  1. a Department of Mathematics, Faculty of Science, Taibah University, Al-Madeenah Al-Munawwarah, P. O. Box 344, Kingdom of Saudi Arabia;
    b Department of Mathematics, Faculty of Science, Sohag University, Sohag 82524, Egypt;
    c College of Applied Medical Sciences, Turabah, Taif University, Kingdom of Saudi Arabia
  • Received:2012-10-07 Revised:2012-12-16 Online:2013-05-01 Published:2013-05-01
  • Contact: Gamal M. Mahmoud, Emad E. Mahmoud E-mail:gmahmoud@, aun.edu.eg, gmahmoud_56@yahoo.com; emad_eluan@yahoo.com

摘要: The aim of this paper is to study the control of hyperchaotic complex nonlinear systems with unknown parameters using passive control theory. An approach is stated to design the passive controller and estimate the unknown parameters based on the property of the passive system. The feasibility and effectiveness of the proposed approach is demonstrated through its application to the hyperchaotic complex Lü system, as an example. The estimated values of the unknown parameters are calculated. The analytical form of the complex controller is derived and used in the numerical simulation to control the hyperchaotic attractors of this example. Block diagrams of this example using Matlab/Simulink are constructed after and before the control to ensure the validity of the analytical results. Other examples of hyperchaotic complex nonlinear systems can be similarly treated.

关键词: control, passive control, hyperchaotic, complex

Abstract: The aim of this paper is to study the control of hyperchaotic complex nonlinear systems with unknown parameters using passive control theory. An approach is stated to design the passive controller and estimate the unknown parameters based on the property of the passive system. The feasibility and effectiveness of the proposed approach is demonstrated through its application to the hyperchaotic complex Lü system, as an example. The estimated values of the unknown parameters are calculated. The analytical form of the complex controller is derived and used in the numerical simulation to control the hyperchaotic attractors of this example. Block diagrams of this example using Matlab/Simulink are constructed after and before the control to ensure the validity of the analytical results. Other examples of hyperchaotic complex nonlinear systems can be similarly treated.

Key words: control, passive control, hyperchaotic, complex

中图分类号:  (Nonlinear dynamics and chaos)

  • 05.45.-a
05.45.Gg (Control of chaos, applications of chaos) 05.45.Xt (Synchronization; coupled oscillators)