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1.
本文针对一类网络伺服控制系统中存在的丢包问题进行了研究。对于网络伺服系统中控制器和执行器之间网络存在数据丢包的情况,提出了一类新的丢包网络伺服系统模型。在此模型下,对预测函数控制算法进行分析,设计了预测函数控制产生器和数据包预测补偿器,并研究了相应的补偿策略。对某网络伺服系统的仿真实验表明了本文算法的合理性和有效性。  相似文献   

2.
针对一类基于网络的运动控制系统中存在的时延和丢包问题进行研究。对于网络运动控制系统存在数据时延和丢包的情况,建立网络运动控制系统模型。在此模型下,对预测函数控制算法进行分析,设计了预测函数控制产生器和数据延时预测补偿器,并研究相应的补偿策略。仿真分析表明算法的合理性和有效性。  相似文献   

3.
NBFI(基于网络的反馈连接)是一类基于网络反馈连接的系统.文中研究了此模型的数据包丢失的问题,将带有有界任意丢包同题的NBFI系统建模成一般的线性切换系统,并应用切换Lyapunov函数方法加以分析,进而给出了NBFI系统渐近稳定的充分条件,并将结果推广到单位时延的情况.最后给出仿真,从而验证了结论的正确性.  相似文献   

4.
NBFIs(Network-bascd Feedback Interconnections)是一类基于网络反馈连接的系统,本文研究了此模型的数据包丢失的问题,将带有有界任意丢包问题的NBFI系统建模成一般的线性切换系统,并应用切换lyapunov函数方法加以分析,进而给出了NBFI系统渐近稳定的充分条件,最后给出仿真,从而验证了结论的正确性.  相似文献   

5.
NBFIs(Network-bascd Feedback Interconnections)是一类基于网络反馈连接的系统,本文研究了此模型的数据包丢失的问题,将带有有界任意丢包问题的NBFI系统建模成一般的线性切换系统,并应用切换lyapunov函数方法加以分析,进而给出了NBFI系统渐近稳定的充分条件,最后给出仿真,从而验证了结论的正确性.  相似文献   

6.
对一类具有随机丢包和通讯限制的网络控制系统的鲁棒故障检测问题进行研究;考虑控制器到执行器间存在通讯限制以及传感器到控制器间存在数据丢包,并将丢包用Bernoulli随机二进制分布进行描述;在此基础上建立带有故障的离散时间模型,基于所建立的模型设计故障检测滤波器,使得残差系统随机稳定,同时滤波误差系统的H∞范数满足给定的衰减水平;所设计的故障检测滤波器不但保证了残差系统对故障的灵敏,同时对系统的外部扰动输入具有鲁棒性;数值算例验证了文章所提方法是可行的.  相似文献   

7.
针对一类具有随机丢包的非线性网络控制系统,研究了系统的故障检测问题.基于T-S模糊模型将对象线性化,考虑了控制器和执行器之间、控制器和传感器之间的随机丢包现象,采用满足Bernoulli分布的二进制序列来描述数据传输的随机丢包.同时利用模糊主导子系统规则,设计了模糊观测器,给出了基于观测器闭环系统渐近稳定的充分条件,并通过数值仿真实验验证了该方法的有效性.  相似文献   

8.
不确定网络控制系统具有H ∞性能界的鲁棒控制   总被引:1,自引:0,他引:1  
黄剑  关治洪  王仲东 《控制与决策》2005,20(9):1002-1005
针对闭环网络控制系统,在考虑网络数据传输可能发生丢包的情况下,提出了一类不确定切换系统模型.为了量化网络数据丢失的影响,根据网络特点给出了网络传输数据丢包率的数学定义,进一步研究了此类切换系统在某种程度的数据丢包率影响下具有一定H∞性能界的鲁棒状态反馈控制问题.应用H∞鲁棒控制理论及线性矩阵不等式技术得到了全状态反馈控制器的设计方法,以一组线性矩阵不等式表示其主要结果.最后给出了一个具体的数值示例.  相似文献   

9.
不确定网络控制系统具有H∞性能界的鲁棒控制   总被引:2,自引:0,他引:2  
黄剑  关治洪  王仲东 《控制与决策》2005,20(9):1002-1005,1011
针对闭环网络控制系统,在考虑网络数据传输可能发生丢包的情况下,提出了一类不确定切换系统模型.为了量化网络数据丢失的影响,根据网络特点给出了网络传输数据丢包率的数学定义,进一步研究了此类切换系统在某种程度的数据丢包率影响下具有一定H∞性能界的鲁棒状态反馈控制问题.应用H∞鲁棒控制理论及线性矩阵不等式技术得到了全状态反馈控制器的设计方法,以一组线性矩阵不等式表示其主要结果.最后给出了一个具体的数值示例.  相似文献   

10.
具有数据包丢失的网络控制系统主动容错控制   总被引:1,自引:0,他引:1  
在保证稳定性的前提下,研究具有数据包丢失的网络控制系统主动容错控制问题.基于一类包含马尔可夫丢包过程的网络控制系统模型,考虑了执行器可能失效的情况.利用Lyapunov稳定性理论和线性矩阵不等式方法,获得了系统的保性能被动容错控制器.从控制性能的角度考虑,针对不同的执行器失效模式,得到了丢包网络环境下系统的主动客错控制器的设计方法.数值示例表明,该控制器设计方法是有效的.  相似文献   

11.
考虑网络传输中存在的数据丢包和信号量化问题, 研究了基于数据丢包的非线性奇异脉冲系统设量化反馈控制器的设计方法. 首先给出一般非线性奇异脉冲系统的数学描述, 并在此基础上建立相应的具有丢包的闭环量化反馈控制系统的数学模型. 其次, 根据李雅普诺夫稳定性理论, 给出了奇异脉冲系统的渐近稳定的充分条件以及量化反馈控制器的设计方法. 应用本设计方法, 可以选择满足代数矩阵不等式条件的量化反馈增益, 实现系统渐近稳定. 最后通过对Chua混沌系统仿真, 表明利用本文设计的量化控制器能够保证闭环非线性奇异脉冲系统在具有数据丢包的情况下渐近稳定.  相似文献   

12.
In this article, the problem of finite-time stability (FTS) of nonlinear switched impulsive systems is first considered. A new concept of FTS is introduced and sufficient conditions for a switched impulsive system to be finite-time stable are presented by using switched Lyapunov functions. Some results of FTS of impulsive systems and switched systems can be obtained from this article as special cases, respectively. Two numerical examples are given to illustrate the effectiveness of the proposed results.  相似文献   

13.
The data packet dropouts phenomenon is usually inevitable when information transmitted among communication networks. In this paper, the robust stabilization problem for uncertain networked control systems with data packet dropouts is studied. First, an uncertain discrete-time switching system model is presented to describe these networked control systems. The stability equivalence is then proved between this switching system and an uncertain impulsive difference system. Moreover, a sufficient condition is obtained for the asymptotical stability of the nonlinear impulsive difference system. From this condition the robust stabilization problem is dealt with for the uncertain impulsive system. Main results are given in linear matrix inequalities. Finally a numerical example is given to illustrate the theoretical results.  相似文献   

14.
The data packet dropouts phenomenon is usually inevitable when information transmit- ted among communication networks.In this paper,the robust stabilization problem for uncertain networked control systems with data packet dropouts is studied.First,an uncertain discrete-time switching system model is presented to describe these networked control systems.The stability equiv- alence is then proved between this switching system and an uncertain impulsive difference system. Moreover,a sufficient condition is obtained for the asymptotical stability of the nonlinear impulsive difference system.From this condition the robust stabilization problem is dealt with for the uncertain impulsive system.Main results are given in linear matrix inequalities.Finally a numerical example is given to illustrate the theoretical results.  相似文献   

15.
H-infinity control for switched and impulsive singular systems   总被引:1,自引:1,他引:0  
A new model of dynamical systems is proposed which consists of singular systems with impulsive effects, i.e., switched and impulsive singular systems (SISS). By using the switched Lyapunov functions method, a sufficient condition for the solvability of the H-infinity control problem for SISSs is given which generalizes the H-infinity control theory for singular systems to switched singular systems with impulsive effects. Then the sufficient condition of solvablity of the H-infinity control problem is presented in terms of linear matrix inequalities. Finally, the effectiveness of the developed aooroach for switched and imoulsive singular svstems is illustrated by a numerical example.  相似文献   

16.
In this work, the problem of stability analysis for a class of singular hybrid switched and impulsive system (HSIS) is addressed. Corresponding to each subsystem, a hybrid switched and impulsive controller is designed and then the exponential stability property of the proposed singular HSIS is discussed for linear and nonlinear cases. Because switched systems without impulses are a special case of HSISs, the results are also given to switched system with synchronous and asynchronous controllers. The obtained results apply to control singular systems, and the introduced theorems allow knowing how the control must be designed. Two numerical examples are given to show the effectiveness of the proposed approaches. At first, by using MATLAB® software, the proposed method is applied to a class of physiological processes of endocrine disruptor diethylstilbestrol models to illustrate the effectiveness of the results obtained here for the linear case. Thereafter, another numerical example is provided to support the presented theoretical results for the nonlinear case.  相似文献   

17.
This paper is concerned with the controllability and observability for linear time‐varying switched impulsive systems. First, some new results about the variation of parameters for time‐varying switched impulsive systems are derived. Then less conservative sufficient conditions and necessary conditions for state controllability and observability of such systems are established. And for such system without impulsive control input, sufficient and necessary conditions for controllability and observability are derived. Furthermore, corresponding criteria applied to time‐varying impulsive systems are also discussed and examples are presented to show the effectiveness of the proposed results. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   

18.
In this paper, stability criteria and switching controllers’ design problems for uncertain impulsive switched systems with input delay are investigated by using the receding horizon method. Some LMI conditions are derived to guarantee asymptotical stability of an impulsive switched system under a certain designed delayed controller. Finally, a numerical example is presented to illustrate the effectiveness of the results obtained.  相似文献   

19.
Fei  Shumin 《Neurocomputing》2008,71(7-9):1741-1747
In this paper, we address the problem of neural networks (NNs) stabilization and disturbance rejection for a class of nonlinear switched impulsive systems. An adaptive NN feedback control scheme and an impulsive controller for output tracking error disturbance attenuation of nonlinear switched impulsive systems are given under all admissible switched strategy based on NN. The NN is used to compensate for the nonlinear uncertainties of switched impulsive systems, and the approximation error of NN is introduced to the adaptive law in order to improve the tracking attenuation quality of the switched impulsive systems. Impulsive controller is designed to attenuate effect of switching impulse. Under all admissible switching law, impulsive controller and adaptive NN feedback controller can guarantee asymptotic stability of tracking error and improve disturbance attenuation level of tracking error for the overall nonlinear switched impulsive system. Finally, a numerical example is given to demonstrate the effectiveness of the proposed control and stabilization methods.  相似文献   

20.
This paper studies the construction of switching sequences for reachability realization of switched impulsive control systems. An approach is proposed to design switching sequences so that the reachable subspace of switched impulsive control systems is expressed in terms of the reachable state sets of the designed switching sequences. For a class of switched impulsive control systems, it is proved that a single switching sequence can be designed with its reachable state set coinciding with the reachable subspace. Periodic switching sequences are also constructed in this paper for the reachability realization problem. The results present a new way to exploit the switching mechanism to achieve the reachability and controllability of switched impulsive control systems. Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   

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