共查询到18条相似文献,搜索用时 140 毫秒
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基于比较原理,利用推广的向量Hanalay微分不等式,Dini导数,结合Green公式及不等式分析技术,研究几类变时滞分布参数控制系统所导出的滑动模运动方程的全局指数稳定性问题,在仅要求系数矩阵是个M-矩阵的条件下,获得了几类滑动模运动方程全局指数稳定性的充分条件,建立了滑动模运动方程全局指数稳定性定理.推广和改进了前人的结论.并为研究时滞分布参数系统的变结构控制问题奠定了基础. 相似文献
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利用M矩阵理论,同构理论以及不等式技巧,研究了一类变时滞神经网络平衡点的存在性和惟一性问题。同时利用M矩阵理论,反证法以及不等式技巧,得到了变时滞神经网络系统惟一的平衡点的全局指数稳定性的充分条件。通过判断由神经网络的权系数、自反馈函数以及激励函数构造的矩阵是否为M矩阵,即可以检验该变时滞神经网络系统的全局指数稳定性。该判据易于用Matlab进行检验,最后给出一个仿真示例进一步证明了判据的有效性。 相似文献
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基于箱体理论,利用向量函数法,研究了一类无限维随机非线性关联大系统的全局指数稳定性.通过分析相应的随机微分不等式的稳定性,得到了该类大系统全局指数稳定的一个判据.该判据利用随机大系统的系数矩阵以及与大系统关联的Lyapunov矩阵方程的解构造判定条件来判定大系统的全局指数稳定性,计算简便,便于应用. 相似文献
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利用Lyapunov方法对变时滞的线性中立型微分系统的全局指数稳定性进行分析,并估计其指数收敛率,得到了两个实用的全局指数稳定性判据。这些稳定判据都表示为线性矩阵不等式(LMI)形式,易于验证。数字仿真实例验证了所得结果的有效性。 相似文献
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一类非匹配不确定性系统的变结构控制 总被引:2,自引:0,他引:2
研究一类非匹配不确定性系统的变结构控制问题.引入适当的状态变换,将非匹配不确定系统描述成具有分级形式的两个子系统.在保证第一个子系统二次渐近稳定的条件下,利用线性矩阵不等式方法得到第二个状态变量的期望值,并由第二个状态变量与其期望值之差构造滑动模,并利用滑模运动的到达条件,得到变结构控制律. 相似文献
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This paper deals with the problem of global stability of stochastic reaction–diffusion recurrent neural networks with continuously
distributed delays and Dirichlet boundary conditions. The influence of diffusion, noise and continuously distributed delays
upon the stability of the concerned system is discussed. New stability conditions are presented by using of Lyapunov method,
inequality techniques and stochastic analysis. Under these sufficient conditions, globally exponential stability in the mean
square holds, regardless of system delays. The proposed results extend those in the earlier literature and are easier to verify. 相似文献
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Ming‐Chang Pai 《Asian journal of control》2019,21(5):2290-2300
A new discrete‐time adaptive global sliding mode control (SMC) scheme combined with a state observer is proposed for the robust stabilization of uncertain nonlinear systems with mismatched time delays and input nonlinearity. A state observer is developed to estimate the unmeasured system states. By using Lyapunov stability theorem and linear matrix inequality (LMI), the condition for the existence of quasi‐sliding mode is derived and the stability of the overall closed‐loop system is guaranteed. Finally, simulation results are presented to demonstrate the validity of the proposed scheme. 相似文献
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针对一类含有分布时滞和不满足匹配条件的不确定中立型系统,通过利用Lya-punov稳定性理论和线性矩阵不等式(LMI)方法进行了滑模控制研究。首先,选取了依赖于当前状态和状态时滞的滑模面;设计了包含等效控制和非线性切换控制的滑模控制器使得系统满足滑模到达条件,即确保了系统在有限时间内到达滑模面。通过构造适当的Lyapunov函数,利用积分不等式技术,给出了闭环系统渐近稳定的充分条件。该充分条件通过采用虚拟反馈控制思想,结合状态反馈的极点配置方法,转换为线性矩阵不等式的形式,可通过Matlab中的LMI工具箱进行方便的求解。具体算例说明此方法的有效性。 相似文献
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Hanqi Shu Jing Liang Zhenjiang Zhao Yurong Liu Fuad E. Alsaadi 《International journal of systems science》2019,50(4):858-870
This paper deals with the global exponential stability in Lagrange sense for quaternion-valued neural networks (QVNNs) with leakage delay, discrete time-varying delays and distributed delays. By structuring an advisable Lyapunov–Krasovskii functional in quaternion field, and adopting free-weighting-matrix method and inequality technique, a sufficient condition in quaternion-valued linear matrix inequality (LMI) to guarantee the global exponential stability in Lagrange sense is acquired, and the domain of attraction is estimated. A numerical example with simulations is supplied to confirm the availability and feasibility of the raised result. 相似文献
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Some sufficient conditions for the global exponential stability of cellular neural networks with variable coefficients and
time-varying delays are obtained by a method based on a delayed differential inequality. The method, which does not make use
of Lyapunov functionals, is simple and effective for the stability analysis of cellular neural networks with variable coefficients
and time-varying delays. Some previous results in the literature are shown to be special cases of our results.
相似文献
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《Computers & Mathematics with Applications》2006,51(3-4):475-486
In this paper, the exponential periodicity and stability of neural networks with Lipschitz continuous activation functions are investigated, without assuming the boundedness of the activation functions and the differentiability of time-varying delays, as needed in most other papers. The neural networks contain reaction-diffusion terms and both variable and unbounded delays. Some sufficient conditions ensuring the existence and uniqueness of periodic solution and stability of neural networks with reaction-diffusion terms and both variable and unbounded delays are obtained by analytic methods and inequality technique. Furthermore, the exponential converging index is also estimated. The methods, which does not make use of Lyapunov functional, is simple and valid for the periodicity and stability analysis of neural networks with variable and/or unbounded delays. The results extend some previous results. Two examples are given to show the effectiveness of the obtained results. 相似文献