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离散广义系统

离散广义系统的相关文献在1989年到2020年内共计79篇,主要集中在自动化技术、计算机技术、数学、系统科学 等领域,其中期刊论文74篇、会议论文5篇、专利文献3717599篇;相关期刊38种,包括鞍山师范学院学报、东北大学学报(自然科学版)、广西大学学报(自然科学版)等; 相关会议5种,包括2005中国控制与决策学术年会、中国仪器仪表学会第七届青年学术会议、中国自动化学会全国青年学术年会等;离散广义系统的相关文献由115位作者贡献,包括张庆灵、张秀华、杨冬梅等。

离散广义系统—发文量

期刊论文>

论文:74 占比:0.00%

会议论文>

论文:5 占比:0.00%

专利文献>

论文:3717599 占比:100.00%

总计:3717678篇

离散广义系统—发文趋势图

离散广义系统

-研究学者

  • 张庆灵
  • 张秀华
  • 杨冬梅
  • 梁家荣
  • 胡刚
  • 龚文振
  • 董心壮
  • 谢湘生
  • 郭凯
  • 刘燕戈
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 范桂英; 肖润梅
    • 摘要: 主要研究一类不确定离散广义系统,设计了有观测器的控制器作出恰当的李雅普诺夫函数,根据定义得到了一个线性矩阵不等式,用Schur定理的计算方法对线性矩阵不等式进行深入讨论和计算,最后得出了所得闭环离散系统鲁棒无源的充分条件,方法可行有效.
    • SUN Yan-xiu; DU Ying; PAN Bin
    • 摘要: 针对时滞离散广义系统降维观测器的设计问题,提出一类Lipschitz非线性时滞离散广义系统降维观测器的设计方法.首先,基于时滞离散广义系统的可观性对系统进行变换,将系统变换为易于求取降维观测器的形式;其次,基于非线性系统观测器设计的Lyapunov稳定性理论,通过讨论时滞系统中的Lipschitz非线性项,分两种情况设计出了时滞系统的两个降维观测器;最后,为使得时滞系统与降维观测器的误差系统渐近稳定,利用线性矩阵不等式(LMI)的方法分别给出了两个降维观测器存在的充分条件,并通过数值算例验证了该类降维观测器设计方法的有效性.
    • 李莉莉; 逄博; 崔利宏
    • 摘要: 通常具有非因果性的离散广义系统在物理上是无法实现的,但实际系统中往往存在这种情况。本文首先讨论离散广义系统具有因果性的充要条件。然后针对不具有因果性的离散广义系统,证明存在状态反馈控制器和输出反馈控制器使闭环离散广义系统具有因果性的充要条件,并采用构造性方法分别针对 rank(B)= r 和不限制矩阵 B 秩的两种情况,给出状态反馈控制器和输出反馈控制器的设计方案,确保闭环离散广义系统具有因果性。%In generally,discrete-time singular systems with non-causality are considered impossible in physics, which often exist in the practical systems. First,this paper discusses a necessary and sufficient condition of discrete-time singular systems with causality. Then for discrete-time singular systems with non-causality,the necessary and sufficient conditions for existences of state feedback controller and output feedback controller are proved to guarantee causality of the closed-loop systems. And state feedback controller and output feedback controller are designed respectively by constructive method for two cases of rank(B)= r and no requirement for the rank of matrix B which ensure the causality of the closed-loop discrete-time singular systems.
    • 梁露花; 邢伟; 刘艳杰; 项荣武
    • 摘要: 为解决当离散广义系统未知且无零点时,已知其输出功率谱,通过利用谱分解求解相应的谱因子,从而确定出系统的形式的问题.给出了一个一般的求解方法,即运用矩阵的约当分解,将一类广义系统化为正常子系统,并保持可观测性不变.通过已知的正常线性系统求解稳定的最小相位谱因子的方法,对此正常的线性子系统求解其稳定的无零点最小相位谱因子,从而得到相应的广义系统的无零点最小相位谱因子.并针对这种情况,通过算例验证了方法的可行性.%When we do not know the matrices defining the system and it has no zeros,but the output power spectrum is known,we use the spectral factortzation to resolve the spectral factor of the system and we can recover the system through this method.Descriptor systems are changed into normal subsystems by using Jordan decomposition of matrices while keeping the observability.We can solve a zero free minimum phase spectral factor of the normal linear subsystem,and from this spectral factor we can have a zero free minimum phase spectral factor.At last,a numerical example is given to illustrate the methods.
    • 龚文振
    • 摘要: 本文利用 Lyapunov 方法研究了线性离散广义系统的有限时间控制问题。针对该系统的开环情形,给出了其有限时间稳定的充分条件。在此基础上,设计状态反馈控制器,给出了其闭环系统是有限时间有界的充分条件。特别地,针对具有外源干扰线性离散广义系统,我们也给出了控制器设计方法和保证其闭环系统有限时间有界的充分条件。最后通过数值算例验证了该方法的有效性。%In this paper, the finite-time control problem is considered for discrete linear sin-gular systems by virtue of Lyapunov’s method. The sufficient conditions for the finite-time stability of the open-loop discrete linear singular systems are given. Based on the conditions, a state controller is designed and the sufficient conditions for the finite-time boundedness of the closed-loop system composed by the state controller and the discrete linear singular system are presented. In particular, we consider a discrete linear singular system subject to an ex-ogenous output, and provide a designing method of controller and the sufficient conditions for the finite-time boundedness of the closed-loop system composed by the controller and discrete linear singular system subject to an exogenous output. Finally, a numerical example illustrates the validity of the proposed approach.
    • 龚文振
    • 摘要: 本文主要研究具有时变时滞的不确定离散广义系统的稳定性与镇定.利用线性矩阵不等式方法,给出了具有时变时滞的离散广义系统稳定的充分条件,推广了历算广义系统稳定与镇定的相关结果.%In the paper,we study the stability and stabilization of uncertain discrete-time singular systems with time-varying delay.By using the method of linear matrix inequality (LMI),we present the delay-dependent sufficient conditions to test stability for the discrete singular systems with time-delay,which generalizes the result of the stability and stabilization of discrete singular systems.
    • 刘凯; 杨冬梅
    • 摘要: The problem of robust H2/H∞ optimal control for uncertain discrete singular systems was studied with the help of linear matrix inequality approach. A sufficient condition was presented for the systems to satisfy the robust H2/H∞ mixed performance for all admissible uncertainties. The condition can be used to design state feedback controllers, and the resulting closed-loop system is admissible and satisfies the robust H2/H∞ performance. A sufficient condition of matrices inequalities was obtained and a state feedback controller was designed.%利用线性矩阵不等式( LMI)研究一类不确定离散广义系统的鲁棒H2/H∞优化控制问题.对系统所有允许的不确定参数,提出了满足鲁棒H2/H∞混合性能的一个充分条件,以设计状态反馈控制律,保证闭环系统是允许的且满足鲁棒H2/H∞混合性能,得到了该问题可解的一个矩阵不等式的充分条件,并给出一个控制律的设计.
    • 高在瑞; 沈艳霞; 纪志成
    • 摘要: 针对一类离散时间切换广义系统,研究其一致有限时间稳定性问题.首先,把广义系统的有限时间稳定性概念推广到离散切换广义系统;然后,利用Lyapunov—like函数方法,给出了离散切换广义系统在任意给定的切换规则下是正则、因果的,且有限时间有界和有限时间稳定的充分条件,同时给出了保证离散切换广义系统一致有限时间稳定的状态反馈控制器的具体设计方法.仿真算例结果说明了该控制方法的有效性.%The problem of uniform finite-time stability for a class of discrete-time switched descriptor systems is considered. Firstly, the concept of finite-time stability for continuous descriptor systems is extended to discrete-time switched descriptor systems. Secondly, based on the Lyapunov-like function method, and under arbitrary switching signal, sufficient conditions under which discrete-time switched descriptor systems are regular and causal, uniform finite-time bounded and uniform finite-time stable, are derived. Furthermore, the state feedback controllers are designed to guarantee the discrete-time switched descriptor system uniform finite-time stable. Finally, some numerical examples show that the results obtained in this paper are effective.
    • 李侠; 梁家荣; 赵惟琦
    • 摘要: The finite-time control problem for a class of discrete-time linear singular systems subject to norm-bounded exogenous disturbances is discussed. Firstly we analysis the problems of feasible solution and obtain the sufficient conditions that guarantee the problems discussed to be feasible solved. Secondly, the state feedback controller and output feedback controller are designed respectively. After that we can obtain the sufficient conditions to guarantee the closed-loop systems to be bounded in finite -time, which can be reduced to feasibility problems involving linear matrix inequalities (LMIs). Linear matrix inequalities(LMI) in Matlab toolbox can be applied to get the solution. Finally, a numerical example is given to illustrate the validity of this proposed method.%讨论一类具有有限能量的外部扰动的线性离散广义系统的有限时间控制问题。分析问题可解性,得到该问题可解的充分条件,通过状态反馈控制器和输出反馈控制器的设计,给出实现闭环系统有限时间有界的充分条件,这些充分条件可以转化为线性矩阵不等式(LMI)的可行解问题,可借助Matlab中的LMI工具箱求解,最后通过数值算例验证该方法的有效性。
    • 苏晓明; 刘芳玲
    • 摘要: 针对一类参数不确定离散时滞广义系统,研究其鲁棒非脆弱H∞状态反馈控制器的设计问题.系统中的不确定项参数与控制器的增益变化同时具有线性分式形式的范数有界.首先,利用Lyapunov函数理论,研究该标称系统的鲁棒H∞控制问题;其次,以线性矩阵不等式(LMI)形式给出该系统的鲁棒非脆弱H∞控制器存在的充分条件及设计方法.该控制器既能使闭环系统是允许的,又能保证系统具有一定的H∞性能.最后,通过数值算例说明该方法的有效性.%The design problem of robust and non-fragile H-infinity state-feedback controller for a class of uncertain dis crete time-delay singular systems is investigated. System of uncertainties parameters and controller gain change has simultaneously linear fractional form of norm bounded. First of all, using Lyapunov function theory, robust h-infinity control problem of the nominal system is studied) Secondly the sufficient condition for the existence of robust and non-fragile H-infinity controller and design methods are presented via linear matrix inequality (LMI). This controller can make closed-loop sys tem allows, and can guarantee system has certain h-infinity performance; Finally, a numerical simulation shows the effec tiveness of this approach.
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