共查询到19条相似文献,搜索用时 109 毫秒
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刘会茹 《数学的实践与认识》2017,(12):263-268
讨论了企业投资系统的Lyapunov稳定性,得到了企业投资系统渐进稳定的充分条件和稳定的必要条件,并给出了企业投资系统的临界积累率的表达式,这个问题的研究对于促进我国经济高速、稳定持续增长具有重要的理论意义和现实指导价值. 相似文献
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在社会经济系统中,广泛地存在着多重时滞的正系统.对于连续型时滞正系统的全时滞稳定问题,文献[1]已给出简单而实用的代数判别方法.本文通过对离散型多重时滞正系统的深入研究,给出一个全时滞稳定的简单代数充要判别方法,并建立了时滞系统渐近稳定与时滞系统全时滞稳定之间的等价关系,避免了在稳定性判别中由于大量状态扩展所带来的困难.此外本文还建立了稳定性与正平衡点之间的等价关系,并讨论了系数 相似文献
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广义大系统的Lyapunov稳定性分析 总被引:4,自引:0,他引:4
广义大系统的稳定性是一个非常重要的问题 ,由于广义大系统的复杂性 ,对其稳定性的研究也是一件相当困难的事情 .本文利用 Lyapunov方程 ,应用 Lyapunov函数法 ,研究了广义线性大系统和广义非线性大系统的稳定性和不稳定性 ,得到了系统的关联稳定参数域和不稳定域 .给出例子说明该方法的可行性 . 相似文献
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对一类具有捕获的离散捕食系统,给出了正平衡点存在性和稳定性的条件.在半开放资源下考虑了可变价格及可变成本对捕获的影响,利用Gordon理论及政府征税政策,得到了经济均衡点的稳定条件,给出最优捕获策略. 相似文献
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一类非线性的经济系统控制模型的稳定性分析 总被引:2,自引:1,他引:1
用边界比较法讨论了以CE S生产函数作为反馈的定常经济系统控制模型的稳定性,该模型为含有非局部条件的分布参数系统.并且证明了非定常模型的平衡解是全局渐进稳定的. 相似文献
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用系统的观点分析金融稳定性问题,先简介了金融系统的有关概念,比较了金融稳定性和生态学稳定性概念以及金融生态环境与金融系统稳定性的关系,讨论了与金融稳定性有关的问题,论证了金融机构确定模型和随机模型以及具有下临界点L的金融机构模型的稳定性,构建并论述了金融群落、金融群落层级结构系统的稳定性. 相似文献
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该文研究脉冲耦合时滞微分与连续差分系统的稳定性.首先,该文为这类系统引入了一些新的概念如L_2稳定、吸引和L_2渐近稳定,然后给出了一些系统L_2稳定和L_2渐近稳定的判据.该文也给出了一个例子来验证所得结论的有效性.应该注意到这是首次考虑这类脉冲系统. 相似文献
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Jiaoxun KuangHongjiong Tian Kaiting Shan 《Applied mathematics and computation》2011,217(24):10087-10094
We are concerned with delay-independent asymptotic stability of linear system of neutral differential equations. We first establish a sufficient and necessary condition for the system to be delay-independently asymptotically stable, and then give some equivalent stability conditions. This paper improves many recent results on the asymptotic stability in the literature. One example is given to show that the sufficient and necessary condition is easy to verify. 相似文献
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《Journal of Applied Mathematics and Mechanics》2003,67(2):209-213
The stability of mechanical systems, on which dissipative, gyroscopic, potential and positional non-conservative forces act, is investigated. The condition for asymptotic stability is obtained using the Lyapunov function and an estimate of the domain of attraction is also found in terms of the system being considered. A precessional system is also examined. It is shown that the condition for the asymptotic stability of a system is the condition of acceptability in the sense of the stability of a precessional system. The results obtained are applied to the problem of the stabilization, using external moments, of the steady motion of a balanced gyroscope in gimbals. 相似文献
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运用构造李雅普诺夫函数的方法 ,研究了一类四阶非线性系统的全局渐近稳定性 ,给出了该系统零解全局渐近稳定的充分条件 相似文献
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O. V. Anashkin 《Journal of Mathematical Sciences》2001,107(6):4333-4336
This article examines the asymptotic behavior of solutions of a singularly perturbed system of functional-differential equations of the retarded type with a small retardation. Sufficient conditions are introduced to guarantee convergence of the solutions of the system to the corresponding solutions of the limiting system for the case in which the basic condition of the classical Tikhonov theorem on the limiting transition in a singularly perturbed system, i.e., the condition of uniform asymptotic stability of the stationary point of the adjunct system, is replaced by a weaker Lyapunov condition for nonasymptotic stability. Dropping the Tikhonov condition is shown to expand the boundary layer within which the uniformity of the limiting solution breaks down. 相似文献
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Alexander O. Ignatyev 《PAMM》2007,7(1):2030031-2030032
A system of ordinary differential equations with impulse effect at fixed moments of time is considered. The system is assumed to have the zero solution. It is shown that the existence of a corresponding Lyapunov function is a necessary and sufficient condition for the uniform asymptotic stability of the zero solution. Restrictions on perturbations of the right-hand sides of differential equations and impulse effects are obtained under which the uniform asymptotic stability of the zero solution of the ‘unperturbed’ system implies the uniform asymptotic stability of the zero solution of the ‘perturbed’ system. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
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Falk M. Hante Mario Sigalotti Marius Tucsnak 《Journal of Differential Equations》2012,252(10):5569-5593
We study the asymptotic stability of a dissipative evolution in a Hilbert space subject to intermittent damping. We observe that, even if the intermittence satisfies a persistent excitation condition, if the Hilbert space is infinite-dimensional then the system needs not being asymptotically stable (not even in the weak sense). Exponential stability is recovered under a generalized observability inequality, allowing for time-domains that are not intervals. Weak asymptotic stability is obtained under a similarly generalized unique continuation principle. Finally, strong asymptotic stability is proved for intermittences that do not necessarily satisfy some persistent excitation condition, evaluating their total contribution to the decay of the trajectories of the damped system. Our results are discussed using the example of the wave equation, Schrödinger?s equation and, for strong stability, also the special case of finite-dimensional systems. 相似文献
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Dynamics of the density dependent predator-prey system with Beddington-DeAngelis functional response
Haiyin Li 《Journal of Mathematical Analysis and Applications》2011,374(2):644-453
Two models of a density dependent predator-prey system with Beddington-DeAngelis functional response are systematically considered. One includes the time delay in the functional response and the other does not. The explorations involve the permanence, local asymptotic stability and global asymptotic stability of the positive equilibrium for the models by using stability theory of differential equations and Lyapunov functions. For the permanence, the density dependence for predators is shown to give some negative effect for the two models. Further the permanence implies the local asymptotic stability for a positive equilibrium point of the model without delay. Also the global asymptotic stability condition, which can be easily checked for the model is obtained. For the model with time delay, local and global asymptotic stability conditions are obtained. 相似文献
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对于二阶非线性微分方程零解的全局渐近稳定性的研究,含一,二个非线性项的研究成果较多,非线性项在两个以上的研究成果较少,本文研究具有四个非线性项的问题,而具去掉了一般要求Liapunov函数具有无穷大这个较强的条件,只要求系统正半轨线有界。 相似文献