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具有时滞的高阶Hopfield型神经网络的稳定性 总被引:4,自引:0,他引:4
通过Lyapunov泛函的方法,对具有时滞的高阶连续型Hopfield神经网络平衡点的稳定性进行分析,利用Razumikhin定理得到平衡点全局一致渐近稳定的时滞相关与时滞无关充分条件。 相似文献
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本文提出了3-值逻辑函数稳定性的概念,考察“稳定”的概率定义,给出了3-值逻辑函数稳定的判别条件,提供了构造稳定的3-值逻辑函数的典型方法,用本文的方法,也可考察一般P-值逻辑函数的稳定性 相似文献
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用三维边缘元方法分析了有间隙Ⅱ-Ⅵ族半导体材料的散射特性,该方法直接从泛函变分出发避开了其它方法中示肯损超薄介质填充波导本征值和本片函数的困难,简化了求解过程,计算结果与实验值的比较证实了本方法具有有效,可靠和精确的特点。 相似文献
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用三维边缘元方法分析了有间隙Ⅱ-Ⅵ族半导体材料的散射特性.该方法直接从泛函变分出发,避开了其它方法中求解有损超薄介质填充波导本征值和本征函数的困难,简化了求解过程.计算结果与实验值的比较证实了本方法具有有效、可靠和精确的特点 相似文献
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参数不确定和时滞广泛存在于各种实际的控制系统中,而且它们往往是导致系统不稳定或性能下降的原因。本文基于Lyapunov稳定性理论,通过构造简化的Lyapunov-Krasovskii泛函,同时应用线性矩阵不等式(LMI:linearmatrix inequality)方法,研究了参数不确定和单时变时滞系统的鲁棒稳定性问题,并导出了由LMI表示的该类系统的鲁棒稳定性判据,而且,通过这类简化的L-K泛函,在充分利用时滞信息的基础上减少了判据的保守性。最后借助含不确定性扰动的具有单时变时滞的单机-无穷大系统模型,分析了保持鲁棒稳定时系统可承受的最大时滞的界限,数值仿真验证了方法的有效性。 相似文献
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This paper deals with switching networks for multichannel connections. The conditions under which the three-stage switching network is nonblocking for s-channel connections are given. Switching networks that are nonblocking in the strict sense as well as the switching networks nonblocking in the wide sense are considered. The conditions for two-sided and for one-sided switching networks are derived 相似文献
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Chaos Synchronization in Complex Networks 总被引:1,自引:0,他引:1
《IEEE transactions on circuits and systems. I, Regular papers》2008,55(5):1335-1346
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本文利用了矩阵Ostrowski与bRAUER对角占优之条件得到了点格神经网络平衡点存在的充分必要条件,然后利用Ostrowski圆盘定理与Brauer卵形定理得到了点格神经网络的完全稳定性条件,这为非对称 模板的点格神经网络提出一和中新的研究方法。 相似文献
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Zhang Yi Kok Kiong Tan 《IEEE transactions on circuits and systems. I, Regular papers》2005,52(11):2482-2489
Recurrent neural networks of the Lotka-Volterra model have been proven to possess characteristics which are desirable in some neural computations. A clear understanding of the dynamical properties of a recurrent neural network is necessary for efficient applications of the network. This paper studies the global convergence of general Lotka-Volterra recurrent neural networks with variable delays. The contributions of this paper are: 1) sufficient conditions are established for lower positive boundedness of the networks; 2) global exponential stability conditions are obtained for the networks. These conditions are totally independent of the variable delays which are therefore allowed to be uncertain; 3) novel Lyapunov functionals are constructed to establish delays dependent conditions for global asymptotic stability, and 4) simulation results and examples are provided to supplement and illustrate the theoretical contributions presented. 相似文献
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Sufficient and necessary conditions for global exponential stability of discrete-time recurrent neural networks 总被引:1,自引:0,他引:1
Lisheng Wang Zongben Xu 《IEEE transactions on circuits and systems. I, Regular papers》2006,53(6):1373-1380
A set of sufficient and necessary conditions are presented for global exponential stability (GES) of a class of generic discrete-time recurrent neural networks. By means of the uncovered conditions, GES and convergence properties of the neural networks are analyzed quantitatively. It is shown that exact equivalences exist among the GES property of the neural networks, the contractiveness of the deduced nonlinear operators, and the global asymptotic stability (GAS) of the neural networks plus the spectral radius of Jacobian matrix of the neural networks at the unique equilibrium point less than one. When the neural networks have small state feedback coefficients, it is shown further that the infimum of exponential bounds of the trajectories of the neural networks equals exactly the spectral radius of Jacobian matrix of the neural networks at the unique equilibrium point. The obtained results are helpful in understanding essence of GES and clarifying difference between GES and GAS of the discrete-time recurrent neural networks. 相似文献
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Traditionally mobile operators have met the surge in mobile data traffic and the growing number of rural subscribers by deploying more macro base stations. This increases overall energy consumption, operational costs and carbon footprint of cellular networks. In this paper we investigate solutions for reducing the number and size of active macrocells following traffic load conditions in both homogeneous and heterogeneous networks. Results are presented as overall energy reduction gains for homogeneous macro-only and micro-only networks and heterogeneous joint macro-relay and micro-relay networks, using long-term-evolution-advanced technology. Results show that reducing the number of active cells using sleep mode at base stations, in low to medium traffic load conditions, combined with the deployment of small cells offer energy gains in both homogeneous and heterogeneous networks. However, the most significant gains are observed in heterogeneous networks. 相似文献
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文章首先描述了移动本地传输网的建设目标,然后结合目前移动本地传输网的现状介绍了在移动本地传输网中引入自动交换光网络(ASON)技术需要的各种条件,提出了在现有移动本地网基础上如何部署ASON,并提出了传统同步数字体系(SDH)网络和ASON的混合组网方案. 相似文献
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One-sided rearrangeable switching networks composed of uniform time-space elements are considered. Two theorems presenting conditions under which two- and four-wire networks are rearrangeable are given and proven. These theorems are also applicable for multiple-linkage space-division switching networks. 相似文献
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This paper presents the theory and application of lumped-image parameter reactive filter networks, absorptive-type filter networks, and combined absorptive-reactive filter networks as conducted electromagnetic interference reduction circuits. A comparison of the passband characteristics by specific examples is given for filter configurations of the pi, T, absorptive, and absorptive-reactive type under implementation conditions of a fixed source impedance and a varying load impedance as encountered when filtering prime power sources feeding ac to dc converters. This paper illustrates the problem the design engineer faces when applying the usual data given in filter catalogs. The filter characteristics are presented for 50-ohm resistive source and load conditions because of MIL-STD-220A quality control testr equirements. A test configuration is recommended to determine the admittance transfer of a filter network, indicative of the networks performance characteristics under application conditions. 相似文献