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1.
Hopfield神经网络的周期解存在性及其全局吸引性   总被引:4,自引:1,他引:3  
利用重合度理论和微分不等式分析等技巧,给出了Hopfield神经网络周期解存在性及其全局吸引性的判别准则。  相似文献   

2.
时滞Hopfield神经网络模型的全局吸引性和全局指数稳定性   总被引:6,自引:0,他引:6  
对具有时滞的Hopfield神经网络模型,在非线性神经元激励函数是Lipschitz连续(而非已有的大部分文献中假设是Sigmoid函数)的条件下,通过构造适当的泛函,给出了这类模型全局吸引和平衡点全局指数稳定的易于验证的充分条件。  相似文献   

3.
用不动点理论和微分不等式技巧研究了具有变系数连续分布时滞的竞争神经网络的概周期解,给出了其存在性和全局指数收敛的一种判别准则.给出的网络模型和结果都是新的.  相似文献   

4.
本文讨论了含混合时滞和脉冲的Cohen-Grossberg神经网络的稳定性.通过应用M矩阵理论和不等式技巧,得到了含混合时滞的Cohen-Grossberg神经网络平衡态的全局指数稳定性的充分条件.相比以前同类文献,本文减弱了部分条件,推广了部分结论,并在文末给出了两个示例.本文结论对于设计和应用神经网络有一定实用价值.  相似文献   

5.
基于考虑两种不同类型的激活函数,本文研究了非自治变时滞Cohen-Grossberg神经网络(CGNN)在Lagrange意义下的全局指数稳定性,通过利用新的不等式技巧和构造恰当的Lyapunov泛函给出非自治变时滞CGNN模型在Lagrange意义下全局指数稳定性(即一致有界性)以及对其全局指数吸引集估计的代数判据,并给出应用例子加以验证.  相似文献   

6.
一类时滞差分方程的全局吸引性及其应用   总被引:3,自引:0,他引:3  
刘玉记 《应用数学》2001,14(2):28-33
研究一类广泛的时滞差分方程的全局吸引性 ,在较弱的前提下给出其零解全局吸引的充分条件 .将定理应用于红血球增长差分模型及广义 L ogistic差分模型 ,所得定理推广和改进了已有的结果  相似文献   

7.
基于Lyapunov稳定性理论,利用非平滑分析的方法去掉了激励函数可微和有界的条件,通过构造一种新颖的Lyapunov泛函推广改善了判定时滞神经网络系统的全局稳定性的条件.数值仿真表明了结果的有效性.  相似文献   

8.
本文主要考虑了一类带脉冲的Cohen—Grossberg时滞神经网络模型的全局指数稳定性,通过构造Liapunov函数,应用M矩阵理论和一些不等式的技巧,给出了模型的平凡解全局指数稳定的充分条件。  相似文献   

9.
时滞Hopfield神经网络的全局指数稳定性   总被引:13,自引:0,他引:13       下载免费PDF全文
利用时滞微分不等式,讨论了时滞Hopfield神经网络的全局指数稳定性,获得了几个判定条件。这些结论推广了已知文献中的结果。  相似文献   

10.
该文利用不动点理论和微分不等式分析等技巧,研究了变时滞Hopfield神经网络概周期解存在性及其全局吸引性, 所得准则改进了相关文献的结果。  相似文献   

11.
In this paper, by means of constructing the extended impulsive delayed Halanay inequality and by Lyapunov functional methods, we analyze the global exponential stability and global attractivity of impulsive Hopfield neural networks with time delays. Some new sufficient conditions ensuring exponential stability of the unique equilibrium point of impulsive Hopfield neural networks with time delays are obtained. Those conditions are more feasible than that given in the earlier references to some extent. Some numerical examples are also discussed in this work to illustrate the advantage of the results we obtained.  相似文献   

12.
This paper studies the problem of global exponential stability and exponential convergence rate for a class of impulsive discrete-time neural networks with time-varying delays. Firstly, by means of the Lyapunov stability theory, some inequality analysis techniques and a discrete-time Halanay-type inequality technique, sufficient conditions for ensuring global exponential stability of discrete-time neural networks are derived, and the estimated exponential convergence rate is provided as well. The obtained results are then applied to derive global exponential stability criteria and exponential convergence rate of impulsive discrete-time neural networks with time-varying delays. Finally, numerical examples are provided to illustrate the effectiveness and usefulness of the obtained criteria.  相似文献   

13.
研究一类变时滞BAM神经网络平衡点的全局指数稳定性问题.在不要求激励函数全局Lipschitz条件下,通过构造合适的Lyapunov泛函,并结合Young不等式,得到了BAM神经网络模型在一定条件下全局指数稳定的一些充分条件,推广和改进了前人的相关结论,为综合设计指数稳定的时滞BAM神经网络提供了依据.  相似文献   

14.
This paper studies scale-type stability for neural networks with unbounded time-varying delays and Lipschitz continuous activation functions. Several sufficient conditions for the global exponential stability and global asymptotic stability of such neural networks on time scales are derived. The new results can extend the existing relevant stability results in the previous literatures to cover some general neural networks.  相似文献   

15.
In this paper, we study the global exponential stability in Lagrange sense for continuous recurrent neural networks (RNNs) with multiple time delays. Three different types of activation functions are considered, which include both bounded and unbounded activation functions. By constructing appropriate Lyapunov-like functions, we provide easily verifiable criteria for the boundedness and global exponential attractivity of RNNs. These results can be applied to analyze monostable as well as multistable neural networks.  相似文献   

16.
讨论了一类具有变时滞和脉冲效应的Hopfield神经网络模型.利用按段连续的向量Liapunov思想方法,研究了脉冲时滞神经网络的全局指数稳定性.例子及其数值仿真说明了结果的有效性.推广和改进了已有文献的一些结果.  相似文献   

17.
带有时滞的Clifford值神经网络的全局指数稳定性   总被引:3,自引:3,他引:0       下载免费PDF全文
研究了带有离散时滞和分布时滞的Clifford值递归神经网络的全局指数稳定性问题.首先运用M矩阵的性质和不等式技巧证明了Clifford值递归神经网络平衡点的存在性和唯一性;然后通过数学分析方法,得到了Clifford值递归神经网络全局指数稳定的判定条件;最后数值仿真例子验证了获得结果的有效性.  相似文献   

18.
The paper discusses the global exponential stability in the Lagrange sense for a non-autonomous Cohen–Grossberg neural network (CGNN) with time-varying and distributed delays. The boundedness and global exponential attractivity of non-autonomous CGNN with time-varying and distributed delays are investigated by constructing appropriate Lyapunov-like functions. Moreover, we provide verifiable criteria on the basis of considering three different types of activation function, which include both bounded and unbounded activation functions. These results can be applied to analyze monostable as well as multistable biology neural networks due to making no assumptions on the number of equilibria. Meanwhile, the results obtained in this paper are more general and challenging than that of the existing references. In the end, an illustrative example is given to verify our results.  相似文献   

19.
研究一类具有反应扩散的滞后BAM神经网络平衡点的存在性唯一性和全局指数稳定性.运用拓扑同胚映射,Lyapunov泛函以及多参数方法,得到关于平衡点存在唯一性和全局指数稳定性的充分条件,将相关文献的结果推广到正整数r范数上.  相似文献   

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