具有区间时变时滞的离散Markov跳变系统鲁棒H∞控制

研究一类具有区间时变时滞的离散时间不确定Ｍａｒｋｏｖ跳变系统的时滞相关鲁棒H_∞ 控制问题．通过构造新的ＬｙａｐｕｎｏｖＫｒａｓｏｖｓｋｉｉ泛函,基于有限和不等式方法设计状态反馈控制器,使得闭环系统在容许不确定性下鲁棒稳定,且对能量有界的输入噪声满足一定输入输出H_∞ 增益．在新控制器存在条件中未引入任何自由变量矩阵,使之可更为有效地求解．基于锥补线性化的迭代算法可有效求解H_∞ 次优控制器．数值算例表明了所提出方法的有效性．     

时变时滞离散广义Markov 跳变系统的鲁棒稳定性

研究一类具有区间时变时滞的离散不确定广义Markov跳变系统的时滞相关鲁棒稳定性问题.通过将Jensen不等式与一个新的定界不等式相结合,得到了一个新的稳定性判据,该判据中仅含有Lyapunov变量,具有较小的计算负担.进而,基于凸组合方法得到了另一个新的稳定性判据,该判据引入了一些自由矩阵变量,具有较小的保守性.数值算例表明了所提出方法的有效性.     

具有时变不确定性的线性时滞系统的鲁棒H∞控制

研究具有一般形式的不确定线性时滞系统的鲁棒H∞状态反馈控制器设计问题.基 于二次H∞性能概念,首先证明了若存在鲁棒H∞动态状态反馈控制器,则必存在鲁棒H∞静 态状态反馈控制器,然后利用线性矩阵不等式给出了鲁棒H∞静态状态反馈控制器存在的充 分条件和构造方法,最后给出一个算例验证本文方法的有效性.     

关联大系统时变时滞状态反馈分散鲁棒H∞控制

设计了分散状态反馈H∞控制器,引入一种积分不等式方法,结合Lyapunov-Krasovskii泛函方法和积分矩阵不等式技巧导出了此类系统的时滞分散H∞控制的非线性矩阵不等式(NMI)充分条件.使用改进的锥补法(CCL)导出了此类系统时滞分散H∞控制的线性矩阵不等式(LMIs)充分条件.     

不确定时滞系统的鲁棒H∞控制

基于Lyapunov稳定性理论,研究一类同时具有状态非线性不确定和线性不确定时变时滞系统的鲁棒控制器的设计问题。在非线性不确定性满足增益有界条件下,得到该类时变时滞系统依赖于时变延迟导数的最大值的满足鲁棒H∞性能的一个充分条件。通过求解一个线性矩阵不等式-LMI,即可获得鲁棒H∞控制器。给出的两个具体算例说明该方法的有效性。     

具有区间时变时滞的离散Markov跳变系统鲁棒H∞ 控制

研究一类具有区间时变时滞的离散时间不确定Ｍａｒｋｏｖ跳变系统的时滞相关鲁棒H_∞ 控制问题．通过构造新的Ｌｙａｐｕｎｏｖ Ｋｒａｓｏｖｓｋｉｉ泛函,基于有限和不等式方法设计状态反馈控制器,使得闭环系统在容许不确定性下鲁棒稳定,且对能量有界的输入噪声满足一定输入输出H_∞ 增益．在新控制器存在条件中未引入任何自由变量矩阵,使之
可更为有效地求解．基于锥补线性化的迭代算法可有效求解H_∞ 次优控制器．数值算例表明了所提出方法的有效性．

     

具有时变不确定性的线性时滞系统的鲁棒H_∞控制

研究具有一般形式的不确定线性时滞系统的鲁棒 H∞ 状态反馈控制器设计问题 .基于二次 H∞ 性能概念 ,首先证明了若存在鲁棒 H∞ 动态状态反馈控制器 ,则必存在鲁棒 H∞ 静态状态反馈控制器 ,然后利用线性矩阵不等式给出了鲁棒 H∞ 静态状态反馈控制器存在的充分条件和构造方法 ,最后给出一个算例验证本文方法的有效性     

一类非线性不确定时滞系统的鲁棒H∞控制

基于稳定性理论，研究了一类具有状态非线性不确定性的线性时变时滞系统的鲁棒控制器的设计问题．在非线性不确定性满足增益有界条件下，得到了该类时变时滞系统依赖于时变延迟导数的最大值的满足鲁棒性能的一个充分条件．通过求解一个线性矩阵不等式（LMI），即可获得鲁棒H∞控制器．给出的两个具体算例说明了该方法的有效性．     

不确定时变时滞多个体系统的鲁棒H∞一致性控制

在多时变时滞的固定无向拓扑结构下,考虑了带有干扰和不确定性的多个体系统的鲁棒H∞一致性问题.首先,将多个体系统的一致性问题转化为低维多个体系统的一致性问题;然后针对低维系统构建李亚普诺夫函数,给出了多个体系统一致性问题的鲁棒线性H∞反馈控制律存在的充分条件,并利用线性矩阵不等式表示.Matlab 仿真验证了本文所给控制方法的有效性.     

不确定奇异时滞系统的时滞相关型鲁棒H∞弹性控制

研究了含范数有界参数不确定性的奇异时滞系统的时滞相关型鲁棒H_∞弹性控制问题.文中所考虑的控制器增益摄动包括加性摄动和乘性摄动两种形式.在标称奇异时滞系统的时滞相关型稳定性判据的基础上,引入了一个新的时滞相关型有界实引理(BRL),进而给出了时滞相关型鲁棒H_∞弹性控制器存在的充分性条件,并利用LMIs和锥补线性化算法给出了控制器的表达式.从数值算例可以看出,所给出的设计算法是有效的.     

Robust H-infinity filter design for uncertain time-delay singular stochastic systems with Markovian jump

This paper deals with the problem of H-infinity filter design for uncertain time-delay singular stochastic systems with Markovian jump. Based on the extended It^o stochastic differential formula, sufficient conditions for the solvability of these problems are obtained. Furthermore, It is shown that a desired filter can be constructed by solving a set of linear matrix inequalities. Finally, a simulation example is given to demonstrate the effectiveness of the proposed method.     

Robust H-infinity filter design for uncertain time-delay singular stochastic systems with Markovian jump

This paper deals with the problem of H-infinity filter design for uncertain time-delay singular stochastic systems with Markovian jump. Based on the extended It^o stochastic differential formula, sufficient conditions for the solvability of these problems are obtained. Furthermore, It is shown that a desired filter can be constructed by solving a set of linear matrix inequalities. Finally, a simulation example is given to demonstrate the effectiveness of the proposed method.     

Robust H-infinity control for uncertain discrete-time Markovian jump systems with actuator saturation

The design of robust H-infinity controller for uncertain discrete-time Markovian jump systems with actuator saturation is addressed in this paper. The parameter uncertainties are assumed to be norm-bounded. Linear matrix inequality (LMI) conditions are proposed to design a set of controllers in order to satisfy the closed-loop local stability and closed-loop H-infinity performance. Using an LMI approach, a set of state feedback gains is constructed such that the set of admissible initial conditions is enlarged and formulated through solving an optimization problem. A numerical example is given to illustrate the effectiveness of the proposed methods.     

Robust sampled-data control for Markovian jump linear systems

In this paper, we consider the problem of robust control for uncertain sampled-data systems that possess random jumping parameters which is described by a finite-state Markov process. The conditions for the existence of a stabilizing control and optimal control for the underlying systems are obtained. The desired controllers are designed which are in terms of matrix inequalities. Finally, a numerical example is given to show the potential of the proposed techniques.     

参数服从马尔可夫切换中立型时滞系统鲁棒H∞ 控制

研究参数服从马尔可夫切换及具有仿射不确定性的中立型时滞系统H_∞ 状态反馈控制器设计问题. 通过将系统表示为等价的奇异系统, 并利用Moon不等式放大向量积, 基于线性矩阵不等式, 得到了使系统存在无记忆H_∞ 状态反馈控制器与时滞相关的新的充分条件.     

Robust stability and H-infinity control for uncertain discrete-time Markovian jump singular systems

The robust stability and stabilization, and H-infinity control problems for discrete-time Markovian jump singular systems with parameter uncertainties are discussed. Based on the restricted system equivalent (r.s.e.) transformation and by introducing new state vectors, the singular system is transformed into a discrete-time Markovian jump standard linear system, and the linear matrix inequality (LMI) conditions for the discrete-time Markovian jump singular systems to be regular, causal, stochastically stable, and stochastically stable with °- disturbance attenuation are obtained, respectively. With these conditions, the robust state feedback stochastic stabilization problem and H-infinity control problem are solved, and the LMI conditions are obtained. A numerical example illustrates the effectiveness of the method given in the paper.     

Robust stability and H-infinity control for uncertain discrete-time Markovian jump singular systems

The robust stability and stabilization, and H-infinity control problems for discrete-time Markovian jump singular systems with parameter uncertainties are discussed. Based on the restricted system equivalent （r.s.e.） transformation and by introducing new state vectors, the singular system is transformed into a discrete-time Markovian jump standard linear system, and the linear matrix inequality （LMI） conditions for the discrete-time Markovian jump singular systems to be regular, causal, stochastically stable, and stochastically stable with 7- disturbance attenuation are obtained, respectively. With these conditions, the robust state feedback stochastic stabilization problem and H-infinity control problem are solved, and the LMI conditions are obtained. A numerical example illustrates the effectiveness of the method given in the oaoer.     

Robust reliable H-infinity control for nonlinear uncertain stochastic time-delay systems with Markovian jumping parameters

This paper deals with the problems of robust reliable exponential stabilization and robust stochastic stabilization with H-infinity performance for a class of nonlinear uncertain time-delay stochastic systems with Markovian jumping parameters. The time delays are assumed to be dependent on the system modes. Delay-dependent conditions for the solvability of these problems are obtained via parameter-dependent Lyapunov functionals. Furthermore, it is shown that the desired state feedback controller can be designed by solving a set of linear matrix inequalities. Finally, the simulation is provided to demonstrate the effectiveness of the proposed methods.     

Robust exponential stabilization for Markovian jump systems with mode-dependent input delay

This paper is concerned with the problem of exponential stabilization for uncertain linear systems with Markovian jump parameters and mode-dependent input delays. Sufficient stabilization conditions are developed in terms of matrix inequalities, which can be solved by a proposed iterative algorithm based on the cone complementarity linearization (CCL) method. Memory controllers are also designed such that the closed-loop system is exponentially mean-square stable for all admissible uncertainties. Numerical examples are given to show that the developed method is efficient and less conservative.