一个超混沌Lorenz吸引子及其电路实现  

A hyperchaotic Lorenz attractor and its circuit implementation

作　　者：王光义[1] 郑艳[1] 刘敬彪[1] 

机构地区：[1]杭州电子科技大学电子信息学院,杭州310018

出　　处：《物理学报》2007年第6期3113-3120,共8页Acta Physica Sinica

基　　金：浙江省自然科学基金(批准号:Y105175);杭州电子科技大学科研基金(批准号:KYS051505010)资助的课题~~

摘　　要：通过在三阶Lorenz系统中引入一个外加的状态变量构造了一个新的超混沌系统.对系统的一些基本特性,如耗散性、平衡点、稳定性、Hopf分叉进行了详细分析,且观察到了从周期到混沌、超混沌的演化.系统超混沌的存在性通过Lyapunov指数谱得到了验证.还设计了一个模拟电子电路,从电路实验中观察到了各种超混沌吸引子.In this paper, a new hyperchaotic system is constructed by introducing an additional state variable into the third-order Lorenz system. Some basic properties, including dissipativity, equlibria, stability and Hopf bifurcation, of this hyperchaotic system are analyzed in detail, and the bifurcation routes to hyperchaos from periodic, chaotic evolutions are observed. The existence of hyperchaos is verified with Lyapunov exponent spectrum. Moreover, an analog electronic circuit is designed, and various hyperchaotic attractors of this system are observed from the circuit experiments.

关 键 词：LORENZ系统 超混沌吸引子 电路实现 

分 类 号：O415.5[理学—理论物理]