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Chin. Phys., 2006, Vol. 15(6): 1216-1225    DOI: 10.1088/1009-1963/15/6/015
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The generation of a hyperchaotic system based on a three-dimensional autonomous chaotic system

Wang Jie-Zhi, Chen Zeng-Qiang, Yuan Zhu-Zhi
Department of Automation, Nankai University,Tianjin 300070, China
Abstract  This paper reports a new four-dimensional hyperchaotic system obtained by adding a controller to a three-dimensional autonomous chaotic system. The new system has two parameters, and each equation of the system has one quadratic cross-product term. Some basic properties of the new system are analysed. The different dynamic behaviours of the new system are studied when the system parameter $a$ or $b$ is varied. The system is hyperchaotic in several different regions of the parameter $b$. Especially, the two positive Lyapunov exponents are both larger, and the hyperchaotic region is also larger when this system is hyperchaotic in the case of varying $a$. The hyperchaotic system is analysed by Lyapunov-exponents spectrum, bifurcation diagrams and Poincar\'{e} sections.
Keywords:  chaos      chaos generation      hyperchaotic system      bifurcation analysis  
Received:  16 January 2006      Revised:  23 February 2006      Published:  20 June 2006
PACS:  05.45.-a (Nonlinear dynamics and chaos)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 60374037 and 60574036), the Specialized Research Fund for the Doctoral Program of China (Grant No 20050055013) and the Program for New Century Excellent Talents in University of China (NCET).

Cite this article: 

Wang Jie-Zhi, Chen Zeng-Qiang, Yuan Zhu-Zhi The generation of a hyperchaotic system based on a three-dimensional autonomous chaotic system 2006 Chin. Phys. 15 1216

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