Dynamics analysis of a 5-dimensional hyperchaotic system with conservative flows under perturbation  

作　　者：Xuenan Peng Yicheng Zeng Qi Xie 彭雪楠;曾以成;谢奇(School of Physics and Optoelectronic Engineering,Xiangtan University,Xiangtan 411105,China)

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

出　　处：《Chinese Physics B》2021年第10期180-185,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：Conservative chaotic flows have better ergodicity,therefore researching dynamics and applications of conservative systems has become a hot topic.We introduce a constant-perturbation into a 5-dimensional(5D)conservative model.Consequently,the line equilibria of original model have been changed to non-equilibrium.Plentiful chaos phenomena such as coexisting conservative flows can be observed in this modified system.In addition,by increasing the magnitude of the disturbance,the conservative system can be transformed to a dissipative system.Then,the modified system is realized by an xc7z020clg400 field programmable gate array(FPGA)chip.The designed chaotic oscillator consumes fewer resources and has high iteration speed.Finally,a pseudo random number generator based on this novel digital oscillator is designed.

关 键 词：perturbation method coexistence hidden chaotic sea FPGA realization 

分 类 号：O415.5[理学—理论物理]