Finite-time stability analysis and stabilization for linear discrete-time system with time-varying delay

Finite-time stability analysis and stabilization for linear discrete-time system with time-varying delay
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时变时滞线性离散时间系统的有限时间稳定性分析及镇定

DOI:
10.1016/j.jfranklin.2014.02.008
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发表时间:
2014-06
影响因子:
4.1
通讯作者:
Karimi Hamid Reza
Karimi Hamid Reza
中科院分区:
计算机科学3区
文献类型:
--
作者:
Zhang Zhuo;Zhang Zexu;Zhang Hui;Zheng Bo;Karimi Hamid Reza

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研究了线性离散时滞系统的有限时间稳定性问题。为了解决时滞问题,首先将原系统转化为两个相互关联的子系统。通过构造时滞相关的Lyapunov-Krasovskii泛函,利用时变时滞的两项近似,得到了有限时间稳定的充分条件,并以线性矩阵不等式(LMI)的形式表示。所导出的稳定性条件可用于有限时间稳定性分析和最大可容忍时滞的推导。与已有的有限时间稳定性结果相比,所得到的稳定性条件不那么保守。另外,对于镇定问题,我们设计了状态反馈控制器。最后,通过数值算例说明了该方法的有效性。
The problem of finite-time stability for linear discrete-time systems with time-varying delay is studied in this paper. In order to deal with the time delay, the original system is firstly transformed into two interconnected subsystems. By constructing a delay-dependent Lyapunov–Krasovskii functional and using a two-term approximation of the time-varying delay, sufficient conditions of finite-time stability are derived and expressed in terms of linear matrix inequalities (LMIs). The derived stability conditions can be applied into analyzing the finite-time stability and deriving the maximally tolerable delay. Compared with the existing results on finite-time stability, the derived stability conditions are less conservative. In addition, for the stabilization problem, we design the state-feedback controller. Finally, numerical examples are used to illustrate the effectiveness of the proposed method.
一类时变非线性系统的状态反馈控制有限时间镇定
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发表时间: 2012-03
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