Abstract
For a three-dimensional autonomous four-wing chaotic attractor, this paper rigorously verifies its chaotic properties by using topological horseshoe theory and numerical calculations. Firstly, an appropriate Poincaré section of the chaotic attractor is selected by numerical analysis. Accordingly, a certain first return Poincaré map is defined in the Poincaré section. Thereafter, by utilizing numerical calculations and topological horseshoe theory, a one-dimensional tensile topological horseshoe in the Poincaré section is discovered, which revealed that the four-wing attractor has a positive topological entropy, and verifies the existence of chaos in this four-wing attractor. Finally, by using a FPGA chip, the four-wing chaotic attractor was physically implemented, which is more suitable for engineering applications.
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Acknowledgments
This work was partially supported by the Natural Science Foundation of China under Grant Nos. 61203138 and 61374169, the Development of Science and Technology Foundation of the Higher Education Institutions of Tianjin under Grant No. 20120829, the Science and Technology Talent and Technology Innovation Foundation of Tianjin, China, Grant No. 20130830, the Second Level Candidates of 131 Innovative Talents Training Project of Tianjin, China, Grant No. 20130115.
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Dong, E., Liang, Z., Du, S. et al. Topological horseshoe analysis on a four-wing chaotic attractor and its FPGA implement. Nonlinear Dyn 83, 623–630 (2016). https://doi.org/10.1007/s11071-015-2352-2
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DOI: https://doi.org/10.1007/s11071-015-2352-2