共查询到16条相似文献,搜索用时 312 毫秒
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研究了时间标度上具有时滞和脉冲影响的复值神经网络的全局稳定性问题.利用时间标度上的微积分理论,将连续时间型复值神经网络和离散时间型复值神经网络统一在同一个框架下进行研究.在不要求激励函数有界的条件下,运用同胚映射原理,建立了确保时滞复值神经网络平衡点存在性和唯一性的判定条件.通过构造合适的Lyapunov-Krasovskii泛函,并使用自由权矩阵方法和矩阵不等式技巧,获得了时间标度上具有时滞和脉冲影响的复值神经网络平衡点全局稳定性的充分条件.给出的判据是由复值线性矩阵表示的,易于MATLAB软件的YALMIP Toolbox实现.数值仿真实例验证了获得结果的有效性. 相似文献
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对一般类型的混沌系统,提出了一个新的基于同步化的无源性.以Liapunov理论和线性矩阵不等式(LMI)逼近为基础.基于无源性的控制器,不仅要求其同步误差系统无源,同时要求其渐近稳定.解线性矩阵不等式表示的凸最优化问题,可以求得所建议的控制器.对Genesio-Tesi混沌系统和Qi混沌系统的仿真计算,证明所建议格式的有效性. 相似文献
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研究了带有比例时滞的复值神经网络全局指数稳定性问题.借助向量Lyapunov函数思想和同胚映射原理,并使用M-矩阵理论和不等式技巧,建立了网络平衡点存在性、唯一性和全局指数稳定性的判定条件. 相似文献
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该文基于鲁棒控制理论,采用线性矩阵不等式(LMI)方法,研究了一类非线性不确定时滞Markov跳变系统的无源控制问题,设计了基于观测器的无源控制器.通过构造合适的Lyapunov函数,给出了对所有允许的不确定、时滞和非线性,被控对象满足无源控制指标约束下系统渐近稳定的一个充分条件.求解一个线性矩阵不等式,即可获得系统的无源控制器.仿真示例显示了该文设计方法的有效性. 相似文献
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郑建青 《纯粹数学与应用数学》2014,(1):45-52
利用复矩阵的Schur补和次正定性,研究了次正定复矩阵的次Schur补的一些性质,得到了次正定复矩阵次Schur补的几个行列式不等式,将相关文献的相应结果由次正定次Hermite矩阵推广到次正定复矩阵. 相似文献
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R. Sakthivel A. ArunkumarK. Mathiyalagan S. Marshal Anthoni 《Applied mathematics and computation》2011,218(7):3799-3809
This paper is concerned with the problem of passivity analysis for a class of Cohen-Grossberg fuzzy bidirectional associative memory (BAM) neural networks with time varying delay. By employing the delay fractioning technique and linear matrix inequality optimization approach, delay dependent passivity criteria are established that guarantees the passivity of fuzzy Cohen-Grossberg BAM neural networks with uncertainties. The passivity condition is expressed in terms of LMIs, which can be easily solved by various convex optimization algorithms. Finally, a numerical example is given to illustrate the effectiveness of the proposed result. 相似文献
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Projective Synchronization of Fractional Quaternion Neural Networks With Time-Varying Delays北大核心CSCD
研究了具有时变时滞的分数阶四元数神经网络的投影同步问题.该文不将分数阶四元数神经网络系统转化成两个复值系统或四个实值系统,而是将四元数系统当做一个整体进行处理.在合适的控制器下,通过构造合适的Lyapunov函数,并利用一些不等式技巧,得到了具有时变时滞分数阶四元数时滞神经网络投影同步的充分性判据.最后,通过数值仿真实例验证了所得结论的有效性和可行性. 相似文献
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Zheng-Guang Wu Ju H. Park Hongye SuJian Chu 《Nonlinear Analysis: Real World Applications》2012,13(4):1593-1599
The problem of delay-dependent exponential passivity analysis is investigated for neural networks with time-varying delays. By use of a linear matrix inequality (LMI) approach, a new exponential passivity criterion is proposed via the full use of the information of neuron activation functions and the involved time-varying delays. The obtained results have less conservativeness and less number of decision variables than the existing ones. A numerical example is given to demonstrate the effectiveness and the reduced conservatism of the derived results. 相似文献
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Zheng-Guang Wu Ju H. Park Hongye Su Jian Chu 《Nonlinear Analysis: Real World Applications》2012,13(5):2423-2431
In this paper, passivity analysis is considered for Markov jump neural networks with both mixed time-delays and time-varying transition rates. The mixed time-delays consist of both discrete and distributed delays. The time-varying character of transition rates is assumed to be piecewise-constant. By use of the linear matrix inequality (LMI) method and a Lyapunov functional that accounts for the mixed time-delays, a delay-dependent passivity condition is derived, which can be easily checked. The result presented depends upon not only discrete delay but also distributed delay. A numerical example is proposed to show the effectiveness of the proposed method. 相似文献
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In this paper, the problem of passivity analysis is investigated for stochastic interval neural networks with interval time-varying
delays and Markovian jumping parameters. By constructing a proper Lyapunov-Krasovskii functional, utilizing the free-weighting
matrix method and some stochastic analysis techniques, we deduce new delay-dependent sufficient conditions, that ensure the
passivity of the proposed model. These sufficient conditions are computationally efficient and they can be solved numerically
by linear matrix inequality (LMI) Toolbox in Matlab. Finally, numerical examples are given to verify the effectiveness and
the applicability of the proposed results. 相似文献