共查询到18条相似文献,搜索用时 156 毫秒
1.
2.
研究一类具有状态时滞的内联不确定性动态大系统的分散鲁棒 H∞ 控制问题 .系统的不确定性参数满足范数有界条件 .得到了由无记忆状态反馈分散控制器使每一个子系统和整个大系统都可镇定且满足给定 H∞ 性能的充分条件 .所得结果与系统时滞的大小有关 ,并以线性矩阵不等式的形式给出 相似文献
3.
不确定性时滞大系统的分散鲁棒H∞控制 总被引:18,自引:0,他引:18
研究一类具有状态时滞的内联不确定性动态大系统的分散鲁棒H∞控制问题.系统
的不确定性参数满足范数有界条件.得到了由无记忆状态反馈分散控制器使每一个子系统和
整个大系统都可镇定且满足给定H∞性能的充分条件.所得结果与系统时滞的大小有关,并
以线性矩阵不等式的形式给出. 相似文献
4.
5.
不确定系统鲁棒容错H_∞控制的LMI设计方法 总被引:2,自引:1,他引:1
针对不确定线性系统.研究了执行器失效情况下鲁棒容错H∞控制问题.基于连续增益故障模式.利用线性矩阵不等式LMI推导了系统H∞指标约束下鲁棒容错镇定的充要条件.分别给出了输出反馈和状态反馈H∞控制器的设计方法.通过引入变量代换.将求解输出反馈H∞指标约束的鲁棒容错控制器的可解条件转化为标准的LMI.所获得的控制器不仅能使故障系统鲁棒稳定,并且能达到给定的H∞性能指标.仿真实例验证了所提出设计方法的有效性. 相似文献
6.
7.
8.
针对一类具有分离变量的不确定非线性系统,讨论其鲁棒非脆弱H∞控制问题.假定所要设计的控制器存在状态反馈增益变化,设计方法是以线性矩阵不等式组的形式给出的.文中设计一个具有状态增益变化和时滞状态增益变化的非线性反馈控制器,并且保证闭环系统是鲁棒稳定的同时具有H∞扰动衰减度.仿真结果证明了结论的有效性. 相似文献
9.
10.
11.
12.
13.
J. Lavaei 《International journal of control》2013,86(6):935-951
This paper deals with the decentralized control of an interconnected system, where each subsystem has models of all other subsystems (subject to uncertainty). A decentralized controller is constructed based on a reference centralized controller. It is shown that when a priori knowledge of each subsystem about the other subsystems’ models is exact, then the decentralized closed-loop system can perform exactly the same as its centralized counterpart. An easy-to-check necessary and sufficient condition for the internal stability of the decentralized closed-loop system is obtained. Moreover, the stability of the closed-loop system in the presence of the perturbation in the parameters of the system is investigated, and it is shown that the decentralized control system is probably more robust than its centralized counterpart. A proper cost function is then defined to evaluate the closeness of the decentralized closed-loop system to the corresponding centralized control system. This enables the designer to obtain the maximum allowable standard deviation for the modelling errors of the subsystems to achieve a satisfactorily small relative performance deviation with a sufficiently high probability. Finally, the proposed method is exploited to design a near-optimal decentralized control law with respect to a quadratic cost function, whose performance can, under certain conditions, be equal to the minimum achievable performance index corresponding to the centralized LQR control law. The effectiveness of the proposed method is demonstrated in three numerical examples. 相似文献
14.
15.
Decentralized state-feedback stabilization and robust control of uncertain large-scale systems with integrally constrained interconnections 总被引:2,自引:0,他引:2
Valery A. Ugrinovskii Ian R. Petersen Andrey V. Savkin Elena Ya. Ugrinovskaya 《Systems & Control Letters》2000,40(2)
This paper is concerned with a problem of stabilization and robust control design for interconnected uncertain systems. A new class of uncertain large-scale systems is considered in which interconnections between subsystems as well as uncertainties in each subsystem are described by integral quadratic constraints. The problem is to design a set of local (decentralized) controllers which stabilize the overall system and guarantee robust disturbance attenuation in the presence of the uncertainty in interconnections between subsystems as well as in each subsystem. The paper presents necessary and sufficient conditions for the existence of such a controller. The proposed design is based on recent absolute stabilization and minimax optimal control results and employs solutions of a set of game-type Riccati algebraic equations arising in H∞ control. 相似文献
16.
17.
T-S模糊系统的基于观测器的H∞控制设计 总被引:1,自引:1,他引:1
研究了T-S(Takagi-Sugeno)模糊系统H∞控制设计问题.放宽了Kim E等的T-S模糊
系统可二次稳定的条件.给出了T-S模糊系统新的观测器设计方法.然后给出了T-S模糊系统
基于观测器的H∞控制存在的两个新的充分条件.新方法不但简单,而且充分考虑了模糊子系统
间的相互作用.最后通过例子,应用LMI技术,说明了本文给出的T-S模糊系统的基于观测器
的H∞控制器的设计方法简便易行. 相似文献
18.
This paper deals with a design problem of robust non-fragile stabilizing controllers for a class of uncertain linear continuous-time systems. The proposed design approach of robust non-fragile controllers is based on computation of the trajectory for the uncertain linear system and differs from the existing methods based on quadratic stabilization via Lyapunov criterion. In this paper, we show that sufficient conditions for asymptotical stability of the linear system with uncertainties and controller gain variations, and a LMI-based design algorithm of a robust non-fragile controller. Furthermore, we extend the result to the design problem of decentralized robust non-fragile controllers for a class of uncertain large-scale interconnected systems. Finally, the effectiveness of the proposed design scheme of robust non-fragile controllers is shown through illustrative examples. 相似文献