Abstract
Multistability and multiscroll are two interesting phenomena in chaotic systems. When multiscroll attractors can be generated easily by some approaches, there is few generic method to construct desired number of coexisting chaotic attractors. To address this issue, the quaternionic fractal process inspired by quaternionic Julia sets iterative mapping is presented in this paper. The proposed methodology can not only apply to arbitrary existing continuous chaotic systems, but also generate any number of coexisting attractors based on the seed chaotic systems. Moreover, the design can be completed with simple variable substitution. In order to evaluate the performance of the quaternionic fractal process, we employ it to different types of 4D chaotic systems in a specific set of parameter regions. Moreover, the general form of quaternionic fractal process is presented so that other dimensional chaotic systems can be transformed. The dynamic behavior of fractal-processed system is investigated by means of phase portraits, Lyapunov exponents, bifurcation diagrams, and basins of attraction. The result indicates that the quaternionic fractal process is applicable in different cases. Furthermore, a microcontroller-based hardware platform is developed to show its feasibility in industrial field. The experimental results imply that desired number of coexisting attractors are generated with preloading corresponding initial values.
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Acknowledgements
Project supported by the National Key Research and Development Program of China (Grant No. 2018YFB1306600), the National Natural Science Foundation of China (Grant Nos. 62076207, 62076208, and U20A20227), and the Science and Technology Plan Program of Yubei District of Chongqing (Grant No. 2021-17).
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Du, X., Yan, D., Shi, H. et al. Desired number of coexisting chaotic attractors using quaternionic fractal. Nonlinear Dyn 111, 831–845 (2023). https://doi.org/10.1007/s11071-022-07825-5
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DOI: https://doi.org/10.1007/s11071-022-07825-5