Generating multi-layer nested chaotic attractor and its FPGA implementation  

作　　者：Xuenan Peng Yicheng Zeng Mengjiao Wang Zhijun Li 彭雪楠;曾以成;王梦蛟;李志军(School of Physics and Optoelectronic Engineering,Xiangtan University,Xiangtan 411105,China;School of Automation and Electronic Information,Xiangtan University,Xiangtan 411105,China)

机构地区：[1]School of Physics and Optoelectronic Engineering,Xiangtan University,Xiangtan 411105,China [2]School of Automation and Electronic Information,Xiangtan University,Xiangtan 411105,China

出　　处：《Chinese Physics B》2021年第6期236-241,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 62071411)。

摘　　要：Complex chaotic sequences are widely employed in real world, so obtaining more complex sequences have received highly interest. For enhancing the complexity of chaotic sequences, a common approach is increasing the scroll-number of attractors. In this paper, a novel method to control system for generating multi-layer nested chaotic attractors is proposed.At first, a piecewise(PW) function, namely quadratic staircase function, is designed. Unlike pulse signals, each level-logic of this function is square constant, and it is easy to realize. Then, by introducing the PW functions to a modified Chua's system with cubic nonlinear terms, the system can generate multi-layer nested Chua's attractors. The dynamical properties of the system are numerically investigated. Finally, the hardware implementation of the chaotic system is used FPGA chip.Experimental results show that theoretical analysis and numerical simulation are right. This chaotic oscillator consuming low power and utilization less resources is suitable for real applications.

关 键 词：multi-layer nested attractors composited attractors multi-scroll attractors FPGA realization 

分 类 号：O415.5[理学—理论物理]