详细信息
一个新超混沌Lorenz系统的Hopf分岔及电路实现 被引量:14
Hopf Bifurcation and Circuit Implementation of A New Hyperchaotic Lorenz System
文献类型:期刊文献
中文题名:一个新超混沌Lorenz系统的Hopf分岔及电路实现
英文题名:Hopf Bifurcation and Circuit Implementation of A New Hyperchaotic Lorenz System
作者:李德奎[1]
第一作者:李德奎
机构:[1]定西师范高等专科学校数学系,甘肃定西743000
第一机构:甘肃中医药大学定西校区
年份:2016
卷号:37
期号:3
起止页码:294
中文期刊名:宁夏大学学报(自然科学版)
外文期刊名:Journal of Ningxia University(Natural Science Edition)
收录:CSTPCD
基金:国家自然科学基金资助项目(11161027);教育部科技研究重点项目(212180);定西师范高等专科学校青年人才资助项目
语种:中文
中文关键词:新超混沌Lorenz系统;Hopf分岔;第一Lyapunov系数法
外文关键词:a new hyperchaotic Lorenz system; Hopf bifurcation; the first Lyapunov coefficient method
摘要:对Lorenz系统反馈控制并结合Lyapunov指数方法,提出一个新超混沌Lorenz系统.分析该系统平衡点的稳定性及Hopf分岔的存在性.利用第一Lyapunov系数法给出系统Hopf分岔周期解的稳定性条件.通过数值仿真验证理论分析的正确性,并构建该超混沌Lorenz系统的仿真电路,示波器显示出与数值仿真完全一致的混沌吸引子,从而验证电路设计的正确性和电路实现的可行性.
Firstly,a new hyperchaotic Lorenz system is put forward by feedback control for Lorenz system and the Lyapunov index method.The stability of equilibrium points and the existence of Hopf bifurcation are analyzed in the system.Then the stability condition of Hopf bifurcation periodic solution for the system is given by the first Lyapunov coefficient method.Finally,the correctness of the theoretical analysis is verified by the numerical simulations,and a circuit of the new hyperchaotic Lorenz system is built.The chaotic attractors which display on oscilloscope are of the same with the numerical simulations,so the correctness of the circuit design and the feasibility of circuit implementation are illustrated.
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