Stochastic asymptotical synchronization of chaotic Markovian jumping fuzzy cellular neural networks with mixed delays and the Wiener process based on sampled-data control

We investigate the stochastic asymptotical synchronization of chaotic Markovian jumping fuzzy cellular neural networks （MJFCNNs） with discrete, unbounded distributed delays, and the Wiener process based on sampled-data control using the linear matrix inequality （LMI） approach. The Lyapunov–Krasovskii functional combined with the input delay approach as well as the free-weighting matrix approach is employed to derive several sufficient criteria in terms of LMIs to ensure that the delayed MJFCNNs with the Wiener process is stochastic asymptotical synchronous. Restrictions （e.g., time derivative is smaller than one） are removed to obtain a proposed sampled-data controller. Finally, a numerical example is provided to demonstrate the reliability of the derived results.

Linear matrix inequality approach for synchronization control of fuzzy cellular neural networks with mixed time delays

Fuzzy cellular neural networks （FCNNs） are special kinds of cellular neural networks （CNNs）. Each cell in an FCNN contains fuzzy operating abilities. The entire network is governed by cellular computing laws. The design of FCNNs is based on fuzzy local rules. In this paper, a linear matrix inequality （LMI） approach for synchronization control of FCNNs with mixed delays is investigated. Mixed delays include discrete time-varying delays and unbounded distributed delays. A dynamic control scheme is proposed to achieve the synchronization between a drive network and a response network. By constructing the Lyapunov-Krasovskii functional which contains a triple-integral term and the free-weighting matrices method an improved delay-dependent stability criterion is derived in terms of LMIs. The controller can be easily obtained by solving the derived LMIs. A numerical example and its simulations are presented to illustrate the effectiveness of the proposed method.

A NEW APPROACH FOR MULTILEVEL IMAGE SEGMENTATION BASED ON FUZZY CELLULAR NEURAL NETWORK

A new approach for multilevel image segmentation based on fuzzy cellular neural network(CNN) is proposed. Based on a novel fuzzy CNN, a new template is proposed for multilevel image segmentation. The result of computer simulation proves this approach is reasonable. The stability of the fuzzy neural network is also analyzed in this paper.

A new neural network model for the feedback stabilization of nonlinear systems

A new neural network model termed ‘standard neural network model’ (SNNM) is presented, and a state-feedback control law is then designed for the SNNM to stabilize the closed-loop system. The control design constraints are shown to be a set of linear matrix inequalities (LMIs), which can be easily solved by the MATLAB LMI Control Toolbox to determine the control law. Most recurrent neural networks (including the chaotic neural network) and nonlinear systems modeled by neural networks or Takagi and Sugeno (T-S) fuzzy models can be transformed into the SNNMs to be stabilization controllers synthesized in the framework of a unified SNNM. Finally, three numerical examples are provided to illustrate the design developed in this paper.

Exponential convergence and stability of delayed fuzzy cellular neural networks with time-varying coefficients

In this paper, the dynamic behaviors of fuzzy cellular neural networks （FCNNs） with time-varying coefficients and delays are considered. Some criteria are established to ensure the exponential convergence or exponential stability of such neural networks. The effectiveness of obtained results is illustrated by a numerical example.

PERIODIC SOLUTIONS TO FUZZY CELLULAR NEURAL NETWORKS WITH DISTRIBUTED DELAYS

In this paper, a class of fuzzy cellular neural networks with distributed delays is discussed. By employing fixed point theorem and inequality techniques, some sufficient conditions are obtained to ensure the existence and global exponential stability of periodic solutions to the systems. Without assuming the global Lipschitz conditions of activation functions, our results are novel and reduce the limitation of previous known results. Moreover, an example is given to illustrate the effectiveness of our results.

Global Exponential Stability of Fuzzy Cellular Neural Networks with Impulses and Infinite Delays

In this paper, the global exponential stability of fuzzy cellular neural networks with impulses and infinite delays is investigated. Based on an impulsive delayed integro-differential inequality and the properties of fuzzy logic operation and M-matrix, an easily verified sufficient condition is obtained. Moreover, the exponential convergent rate for the fuzzy cellular neural networks with impulses and infinite delays is also given. An example is given to illustrate the effectiveness of our theoretical result.

基于径向基函数神经网络的电网模糊元胞故障诊断

提出了基于径向基函数神经网络的电网模糊元胞故障诊断方法,旨在有效解决神经网络应用于电网故障诊断所面临的适应网络拓扑结构变化的可移植性问题。该方法以单个线路、母线和变压器为元胞对象,以保护各元胞的所有关联保护和对应的断路器为输入,建立了元胞通用神经网络诊断模型,并给出了故障诊断时模型的自动生成方法。此外,考虑到电网故障信息存在不完备性和不确定性,本文采用模糊矢状图来描述电网元件、保护和断路器之间的逻辑推理关系,并提取出蕴含不确定性的模糊推理规则,用于训练元胞通用神经网络。算例仿真结果表明,该方法简单、有效,能处理各种复杂故障情况,且能有效适应网络拓扑结构的变化,具有良好的容错性和可移植性。

高速医药自动化生产线大输液视觉检测与识别技术

药品灌装质量检测是制药过程的一个重要环节,是药品质量的可靠保证.针对医药大输液可见异物视觉检测的需求,研制出基于多视觉的大输液自动化检测识别系统.首先研究了医药图像的高速高可靠性预处理方法,有效消除由机械振动和跟踪引起的干扰.研究了以药液微小异物为目标的改进模糊细胞神经网络图像分割方法,揭示了液体中异物目标、微粒、气泡等产生机理,综合分析目标的形态特征、边缘轮廓、运行特征等,得到各种异物的类型特征以及在序列图像中的动态变化信息.最后,使用序列图像的目标特征,基于支持向量机的AdaBoosting分类算法进行异物识别,结果证明本文提出的方法检测识别率高,对工程设备的研制具有重要意义.

一种元胞自动机与类电磁法相结合的行人流模型

针对室内空间的行人流疏散过程,在元胞自动机的基础上,利用类电磁法和模糊神经网络建立了一种新的行人流优化模型.该模型首先基于静态影响因素和动态影响因素给出了行人移动概率的计算公式,以及行人流演化过程.同时,结合疏散时间、系统平均速度、出口处流率给出了目标优化函数,并通过类电磁法和模糊神经网络对上述目标函数进行求解.最后,利用仿真平台进行实验,深入分析了疏散时间、出口宽度和初始行人密度之间的关系.结果表明,疏散时间与出口宽度呈现负相关,并且适当提高系统平均速度有利于降低疏散时间.

基于模糊细胞神经网络的彩色图像形态学重构

利用彩色图像的 Ｒ Ｇ Ｂ空间分解，在模糊细胞神经网络上实现了彩色图像数学形态学的基本算子，并讨论了该实现相对于常规串行计算机算法的优越性和局限．进一步地利用按分量的灰度重构，实现了彩色重构算法．最后讨论了该重构算法在抑制彩色图像高频噪声中的应用．给出的仿真结果对于推广模糊细胞神经网络在彩色图像实时处理和硅眼等模拟逻辑系统中的应用有着重要的意义．

模糊细胞神经网络在书法碑帖汉字重构中的应用

模糊细胞神经网络作为一种模拟逻辑可编程并行网络，可以用来实时实现数学形态学的全部基本算子．文中基于加性模糊细胞神经网络结构，应用数学形态学的重构算法，研究中国书法碑帖在自然腐蚀噪声环境下的去噪和汉字提取问题，并给出了算法的伪代码描述和数字计算机仿真结果．该方法可应用于书法碑帖的汉字处理和实时重构．

具有脉冲影响的模糊反应扩散细胞神经网络指数同步

研究了具有混合时滞与脉冲影响的模糊反应扩散细胞神经网络的全局指数同步问题.通过构造恰当的Lyapunov泛函并利用一些不等式分析技巧,得到了基于p-范数的耦合神经网络系统全局指数同步条件.通过对所得结果的分析可发现较大的扩散系数更有利于系统实现同步.

随机时滞模糊细胞神经网络均方指数稳定性分析

利用Lyapunov泛函方法研究一类随机时滞模糊细胞神经网络平衡点的均方指数稳定性,并运用不等式技术、随机分析理论证明主要结果,最后给出例子验证结果的有效性.

模糊细胞神经网络的稳定性

本文研究了模糊细胞神经网络（ Ｆ Ｃ Ｎ Ｎ）的稳定性。

带有离散滞后时滞和非线性脉冲效应的模糊细胞神经网络的指数同步

研究了具有离散滞后时滞和非线性脉冲效应的模糊细胞神经网络的指数同步,通过Lyapunov函数方法和不等式方法,利用p-范数得到了新的指数同步的充分条件,最后举例说明结论是有效的.

一类时变时滞模糊细胞神经网络的时滞依赖指数稳定性判据

针对一类带有时变时滞的模糊细胞神经网络,通过适当的构造Lyapunov-Krasovskii泛函,以线性矩阵不等式的形式提出了一种新颖的依赖于时滞的全局指数稳定性判据.与之前结果相比,所提出的判据针对模糊时滞项进行了变换,从而首次考虑了模糊细胞神经网络中非模糊项的连接权矩阵中元素的符号问题,降低了判据的保守性.并且时滞变化率的限制将被放松.仿真结果进一步证明了判据的有效性.

变时滞随机模糊细胞神经网络的均方指数稳定性分析

利用Lyapunov泛函及随机分析技巧研究一类变时滞的随机模糊细胞平衡点的均方指数稳定性,得到了均方指数稳定性的充分条件.该模型同时考虑了模糊不确定性和随机不确定性,更加接近真实的神经网络.最后给出一个例子证明结论的有效性.

基于智能生态细胞的遥感信息提取方法

提出了一种基于智能生态细胞的遥感信息提取方法。该方法综合了作物的物候特征、光谱演化特征和空间相关性的反馈信息,融合了元胞自动机、模糊推理和BP神经网络智能计算思想。以2009年多时相Landsat7 ETM遥感影像作为数据源,进行了基于智能生态细胞的烤烟种植面积监测。监测结果表明,该方法可以有效提高遥感信息提取精度,具有实际应用价值。