共查询到17条相似文献,搜索用时 62 毫秒
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提出了一种通过相空间压缩实现时空混沌系统广义同步的方法. 以Fitzhugh-Nagumo反应扩散时空混沌系统为例,仿真模拟说明了该方法的有效性与实用性. 通过研究有界噪声作用下该系统的同步效果,表明这种同步方法具有较强的抗干扰能力. 此方法可以实现任意时空混沌系统的广义同步,具有普适性. 同步控制器结构简单、易于应用.
关键词:
时空混沌
广义同步
相空间压缩 相似文献
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研究了一类混沌系统的混沌同步,对此类混沌系统,通过设计一个合适标量控制器,可以实现系统的混沌同步.给出了该标量控制器设计的一般方法,并从理论上得到了混沌同步的充分和必要条件,且此充分和必要条件与混沌系统的性质无关.
关键词:
混沌系统
标量控制器
混沌同步 相似文献
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单向耦合驱动同步法可实现耦合环形腔激光器映象格子模型与耦合声光双稳态映象格子模型时空混沌的广义同步.数值实验表明最大条件李雅普诺夫指数为负,可以实现时空混沌广义同步,给出了实现同步的最小耦合强度,利用辅助分析法证明了异构系统的广义同步. 相似文献
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Adaptive generalized functional synchronization of chaotic systems with unknown parameters 下载免费PDF全文
A universal adaptive generalized functional synchronization approach to any two different or identical chaotic systems with unknown parameters is proposed, based on a unified mathematical expression of a large class of chaotic system. Self-adaptive parameter law and control law are given in the form of a theorem. The synchronization between the three-dimensional R6ssler chaotic system and the four-dimensional Chen's hyper-chaotic system is studied as an example for illustration. The computer simulation results demonstrate the feasibility of the method proposed. 相似文献
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Realization of generalized synchronization between different chaotic systems via scalar controller 下载免费PDF全文
In this paper, a very simple generalized synchronization method between
different chaotic systems is presented. Only a scalar controller is used in
this method. The method of obtaining the scalar controller from chaotic
systems is established. The sufficient and necessary condition of
generalized synchronization is obtained from a rigorous theory,
and the
sufficient and necessary condition of generalized synchronization is
irrelative to chaotic system itself. Theoretical analyses
and simulation results
show that the method established in this paper is effective. 相似文献
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Adaptive generalized synchronization between Chen system and a multi-scroll chaotic system 下载免费PDF全文
Based on Lyapunov theory, the adaptive generalized synchronization between Chen system and a multi-scroll chaotic system is investigated. According to the form of target function a proper adaptive controller is designed, by which the controlled Chen system can be synchronized with a multi-scroll chaotic system including unknown parameters. The Lyapunov direct method is exploited to prove that the synchronization error and parameter identification error both converge to zero. Numerical simulation results verify the feasibility of the proposed method further. 相似文献
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A new three-dimensional chaotic system and its modified generalized projective synchronization 下载免费PDF全文
Based on the Chen chaotic system,this paper constructs a new three-dimensional chaotic system with higher order nonlinear term and studies the basic dynamic behaviours of the system. The modified generalized projective synchronization has been observed in the coupled new three-dimensional chaotic system with unknown parameters. Furthermore,based on Lyapunov stability theory,it obtains the control laws and adaptive laws of parameters to make modified generalized projective synchronization of the coupled new three-dimensional chaotic systems. Numerical simulation results are presented to illustrate the effectiveness of this method. 相似文献
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This paper investigates the chaotic synchronization between the noise-perturbed Lorenz system and one of the noise-perturbed Chen and Lu¨ systems.Based on the active control method and the Lyapunov theory in stochastic differential equations,sufficient conditions for the stability of the error dynamics are derived.Numerical simulations are also shown to demonstrate the effectiveness of these theoretic results. 相似文献