Abstract
In this paper, a new fractional-order hyperchaotic system based on the Lorenz system is presented. The chaotic behaviors are validated by the positive Lyapunov exponents. Furthermore, the fractional Hopf bifurcation is investigated. It is found that the system admits Hopf bifurcations with varying fractional order and parameters, respectively. Under different bifurcation parameters, some conditions ensuring the Hopf bifurcations are proposed. Numerical simulations are given to illustrate and verify the results.
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The authors would like to thank the reviewers and the editor for their valuable comments and suggestions. This work is supported by the Program of National Natural Science Foundation of China (No. 51275229), the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20093401120001).
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Li, X., Wu, R. Hopf bifurcation analysis of a new commensurate fractional-order hyperchaotic system. Nonlinear Dyn 78, 279–288 (2014). https://doi.org/10.1007/s11071-014-1439-5
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DOI: https://doi.org/10.1007/s11071-014-1439-5