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基于稳定性理论,提出了一种状态反馈控制混沌的方法。介绍了该方法的控制原理以及各个预期的周期轨道反馈系数的选取原则。以Gibbs光学双稳系统为例,验证了该方法的有效性。数值结果表明,通过调节反馈系数,可以将系统控制在所需的目标轨道上。 相似文献
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Recently an act-and-wait modification of time-delayed feedback control has been proposed for the stabilization of unstable periodic orbits in nonautonomous dynamical systems (Pyragas and Pyragas, 2016 [30]). The modification implies a periodic switching of the feedback gain and makes the closed-loop system finite-dimensional. Here we extend this modification to autonomous systems. In order to keep constant the phase difference between the controlled orbit and the act-and-wait switching function an additional small-amplitude periodic perturbation is introduced. The algorithm can stabilize periodic orbits with an odd number of real unstable Floquet exponents using a simple single-input single-output constraint control. 相似文献
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研究了一个新的简易混沌振荡电路系统的稳定性和混沌特性,从理论上推导了该混沌振荡电路系统的稳定和混沌的条件,并对该系统进行了精确反馈线性化控制.最后,通过电路仿真实验和硬件实验验证了理论分析的准确性. 相似文献
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Adaptive stabilization of an incommensurate fractional order chaotic system via a single state controller 下载免费PDF全文
In this paper, we investigate the stabilization of an incommensurate fractional order chaotic systems and propose a modified adaptive-feedback controller for the incommensurate fractional order chaos control based on the Lyapunov stability theory, the fractional order differential inequality and the adaptive control theory. The present controller, which only contains a single state variable, is simple both in design and in implementation. The simulation results for several fractional order chaotic systems are provided to illustrate the effectiveness of the proposed scheme. 相似文献
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提出双环掺铒光纤激光器耦合反馈控制混沌的物理模型,利用定向耦合器将系统的输出变量反馈到系统中,通过间接控制损耗系数,并选取适当的反馈系数,实现对系统混沌的控制。分析了反馈系数对激光器由混沌态进入周期态和稳定态的动力学行为的影响。数值模拟表明:改变系统损耗系数,双环掺铒光纤激光器可由周期态进入混沌态;加入耦合反馈,适当调制反馈系数,可以将双环光纤激光器混沌控制到周期态和稳定态上;提高系统反馈系数,系统进入稳定态的时间变短。选取不同的系统初值,激光器总能得到两种不同的奇怪吸引子,可见双环掺铒光纤激光器具有双稳态特征。 相似文献
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Nonlinear feedback synchronisation control between fractional-order and integer-order chaotic systems 下载免费PDF全文
This paper focuses on the synchronisation between fractional-order and integer-order chaotic systems.Based on Lyapunov stability theory and numerical differentiation,a nonlinear feedback controller is obtained to achieve the synchronisation between fractional-order and integer-order chaotic systems.Numerical simulation results are presented to illustrate the effectiveness of this method. 相似文献
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Control of fractional chaotic and hyperchaotic systems based on a fractional order controller 下载免费PDF全文
We present a new fractional-order controller based on the Lyapunov stability theory and propose a control method which can control fractional chaotic and hyperchaotic systems whether systems are commensurate or incommensurate.The proposed control method is universal, simple, and theoretically rigorous. Numerical simulations are given for several fractional chaotic and hyperchaotic systems to verify the effectiveness and the universality of the proposed control method. 相似文献
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The feedback control of a delayed dynamical system, which also includes various chaotic systems with time delays, is investigated. On the basis of stability analysis of a nonautonomous system with delays, some simple yet less conservative criteria are obtained for feedback control in a delayed dynamical system. Finally, the theoretical result is applied to a typical class of chaotic Lorenz system and Chua circuit with delays. Numerical simulations are also given to verify the theoretical results. 相似文献
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Chaotifying a linear time-invariant system by the state feedback controller and sawtooth function 下载免费PDF全文
Another algorithm for chaotification of any given linear time-invariant discrete-time systems is presented. The new chaotification algorithm uses the decentralized control and the continuous sawtooth function, which can generate discrete chaos with an arbitrarily desired amplitude bound. Based on the Marotto theorem, we mathematically prove that the controlled system is chaotic in the sense of Li and Yorke. Finally, a simple example is used to illustrate the effectiveness of the proposed theory and method. 相似文献
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提出双环单模掺铒光纤激光器激光混沌耦合反馈相移控制方法和物理模型,利用耦合器将系统的输出量反馈到系统中,选取适当的反馈系数,并在反馈通道上加入相移控制器PC控制反馈光的相移,通过对反馈系数和反馈光相移的控制,实时、动态、有效地控制激光混沌到稳定态和周期态;分析了系统输出状态随着控制参数变化的演化规律,控制参数的变化可以使得系统的输出产生丰富的有一定规律性的激光动力学现象;讨论了混沌被控制到单周期态时系统输出的振荡周期的变化规律与控制量的关系。 相似文献