Abstract
The paper first discusses a newly reported fractional-order Lü system of order as low as 2.7 and shows its chaotic characteristics by numerical simulations. Then by using the topological horseshoe theory and computer-assisted proof, the existence of chaos in the system is verified theoretically. Finally, an analog hardware circuit is made for the fractional-order system, and the observed results demonstrate that the fractional-order Lü system is chaotic in physical experiment.
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Acknowledgements
This work was supported in part by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 11202148), the National Natural Science Foundation of China (Grant No. 61174094), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20090031110029).
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Jia, HY., Chen, ZQ. & Qi, GY. Topological horseshoe analysis and circuit realization for a fractional-order Lü system. Nonlinear Dyn 74, 203–212 (2013). https://doi.org/10.1007/s11071-013-0958-9
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DOI: https://doi.org/10.1007/s11071-013-0958-9