期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
卷 36, 期 21, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217979222501314
关键词
Systematics; absolute memristor; multiple chaotic attractors; image encryption; circuit implementation
资金
- National Natural Science Foundation of China [61961019]
- Youth Key Project of Natural Science Foundation of Jiangxi Province of China [20202ACBL212003]
This paper proposes a new memristive chaotic system with a relatively simple structure and complex dynamic behavior. The system's dynamic characteristics and an image encryption algorithm are studied, and the physical existence of the system is verified through numerical simulations and circuit implementation.
In this paper, a new memristive chaotic system with a relatively simple structure and complex dynamic behavior is proposed by introducing an absolute memristor into the VB19 chaotic system as a positive feedback term. The analysis shows that the new system is a fractional dimensional dissipative system and is unstable at the line equilibrium point. The system's dynamic characteristics are studied using a bifurcation diagram and Lyapunov exponent's spectrum. The numerical simulation shows that the period-doubling bifurcation phenomenon occurs when changing the parameters and system change from period to chaos. When the initial condition changes, the dynamic evolution of the system indicates that the coexistence of multiple attractors and chaotic signals can be controlled by local amplitude. In addition, a new image encryption algorithm based on the system is designed and the performance of this algorithm is tested through numerical analyses. The system's analog circuit is built using electronic components and also realized by the microprocessor. The circuit realization results consistent with the numerical simulation results are obtained to verify the physical existence of the system.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据