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本文研究广义离散线性系统的静态输出反馈镇定问题。设计静态输出反馈控制器使闭环系统正则、具有因果关系且渐近稳定,导出广义离散线性系统可由静态输出反馈镇定的一个充分条件,并且给出控制器的设计方法。 相似文献
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刘子剑 《常熟理工学院学报》2009,23(10):74-79
研究时滞系统的鲁棒方差约束控制问题．针对带有不确定参数和白噪声干扰的离散时滞系统,设计一类反馈控制器,使通过反馈控制所得到的闭环系统不仅一致渐进稳定,而且系统各状态分量的稳态方差在给定约束范围之内．利用线性矩阵不等式的方法,得出了满足这一反馈控制器的充分条件．给出了一个数值算例,验证了所提出算法的有效性． 相似文献
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借助于有限时间稳定性的定义,对准单边Lipschitz非线性系统引入有限时间镇定的概念。并对一类准单边Lipschitz非线性系统进行了状态反馈和动态输出反馈控制器设计,这类控制器是有别于通常意义的渐近稳定控制器的。利用线性矩阵不等式（LMI）的方法,提出一个充分条件,当反馈控制律作用于该系统时,闭环系统是有限时间稳定的。 相似文献
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This paper is concerned with the issue of stabilization for the linear neutral systems with mixed delays. The attention is focused on the design of output feedback controllers which guarantee the asymptotical stability of the closed-loop systems. Based on the model transformation of neutral type, the Lyapunov-Krasovskii functional method is employed to establish the delay-dependent stability criterion. Then, through the controller parameterization and some matrix transformation techniques, the desired parameters are determined under the delay-dependent design condition in terms of linear matrix inequalities （LMIs）, and the desired controller is explicitly formulated. A numerical example is given to illustrate the effectiveness of the proposed method. 相似文献
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For linear switched system with both parameter uncertainties and time delay,a delay-dependent sufficient condition for the existence of a new robust H∞ feedback controller was formulated in nonlinear matrix inequalities solvable by an LMI-based iterative algorithm.Compared with the conventional state-feedback controller,the proposed controller can achieve better robust control performance since the delayed state is utilized as additional feedback information and the parameters of the proposed controllers are changed synchronously with the dynamical characteristic of the system.This design method was also extended to the case where only delayed state is available for the controller.The example of balancing an inverted pendulum on a cart demonstrates the effectiveness and applicability of the proposed design methods. 相似文献
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针对一类具有时变状态时滞和参数不确定性的线性不确定时滞系统,研究了闭环极点具有α-稳定性限制的鲁棒H∞控制器设计问题.对所有容许的不确定,首先给出判断系统鲁棒α-稳定且具有干扰衰减γ的充分条件;而后基于线性矩阵不等式方法,分别提出了状态反馈和动态输出反馈控制器存在的充分条件及相应的控制器设计方法.数值算例验证了所给结果的有效性. 相似文献
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李秀英 《通化师范学院学报》2003,24(6):13-16
利用线性矩阵不等式，基于广义系统严格正实引理，给出了一类具有多项式型不确定性广义系统具有鲁棒扩展严格正实性(ESPR)的充分条件，并给出了ESPR控制器的存在条件及设计方法． 相似文献
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讨论了具有共同的Lyapunov函数的线性切换系统的稳定性问题,分别讨论了状态反馈、输出反馈与观察器设计。 相似文献
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讨论了一类基于T-S模糊模型的非线性系统,根据满意控制思想提出一种条件约束下的状态反馈控制设计方法。即在H∞控制基础上,加入圆形极点指标和状态协方差指标约束。进而研究了圆形极点约束和状态协方差约束下,系统被控输出对扰动输入的H∞抑制界优化问题,并且将H∞优化、圆形极点和状态协方差指标约束的状态反馈控制器设计归结为求一组线性矩阵不等式(LMI)的可行解问题,通过求解LMI得到满足要求的控制器参数。仿真结果表明该方法可行有效。 相似文献
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For linear switched system with both parameter uncertainties and time delay, a delay-dependent sufficient condition for the
existence of a new robustH
∞ feedback controller was formulated in nonlinear matrix inequalities solvable by an LMI-based iterative algorithm. Compared
with the conventional state-feedback controller, the proposed controller can achieve better robust control performance since
the delayed state is utilized as additional feedback information and the parameters of the proposed controllers are changed
synchronously with the dynamical characteristic of the system. This design method was also extended to the case where only
delayed state is available for the controller. The example of balancing an inverted pendulum on a cart demonstrates the effectiveness
and applicability of the proposed design methods.
Project (No. 2002CB312200) supported by the National Basic Research Program (973) of China 相似文献
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针对不确定时滞的奇异系统H8状态反馈控制,基于线性矩阵不等式方法(LMI)及Lyapunov稳定性理论导出使得奇异系统鲁棒可镇定且具有H8范数界γ的一个充分条件,并用线性矩阵不等式给出状态反馈控制器设计方法。数值例子证明了该方法的有效性。 相似文献
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提出一种混合控帝了方法，把PI控制与滑模变结构控制（SMVSC）相结合用于Boost变换器．当输出偏差较大时（大于阈值）采用SMVSC．而在输出偏差较小时（小于阈值）采用PI控制。这种方法可使系统在偏差较大时具有SMVSC的快速性和鲁棒性，在偏差较小时由于不会出现积分饱和使PI控制器发挥作用而消除了滑模面附近的高频抖动及滑动模态误差。 相似文献
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KE Hai-sen YE Xu-dong 《浙江大学学报(A卷英文版)》2006,7(10):1742-1747
INTRODUCTION In recent years, much progress has been made in the design of control laws for systems subjected to nonholonomic constraint making it impossible to stabilize the system by any time-invariant continuous state feedback control law. This fact stimulates re- searchers to construct time-varying (Jiang and Ni- jmeijer, 1999; Jiang, 2001; Samson, 1995; Tian and Li, 2002) or discontinuous (Chang and Chen, 2002; Ge et al., 2003; Hu et al., 2004; Kim and Tsiotras, 2002; Mnif, 2004;… 相似文献
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戴斌 《吕梁高等专科学校学报》2011,1(2)
针对BUCK变换器的传统设计方法的不足,利用滑模变结构控制理论设计BUCK变换器,探讨以期望输出电压为依据的切换面设计问题,并对BUCK电路滑动模态上的动态品质进行分析,具有较强的鲁棒性,此方法同样适用其它电力电子电路. 相似文献
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研究了一类不确定时滞系统的输出滑模控制器设计问题。在系统状态未知的条件下,利用系统的输出设计滑模切换面,并结合新的趋近率设计系统的到达控制,有效地削弱系统抖振。最后给出一个仿真例子验证了该方法的可行性与有效性。 相似文献
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刘轩黄 《江西电力职业技术学院学报》2005,18(3):1-4
研究了离散线性随机系统输入与输出间的关系。证明了任何线性随机系统的输出方差与其控制输入无关,因而在任何意义下,由极小化方差而得最优控制是不可能的。证明了输出与其集点间的期望差,文中定义为输出偏差,依赖于控制信号的选择。基于这种观点,给出了输出偏差极小化的最小偏差(M B)控制器。另一涉及输入输出关系的重要概念是线性随机系统完全i-步输出可达性。给出了由输入-输出随机差分方程所给多变量随机系统完全i-步输出可达的充要条件和检验输出可达性的简易方法。 相似文献
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研究了广义系统的正实控制问题.在控制器增益摄动具有加法和乘法两种形式下,讨论了广义系统的严格正实弹性控制器的设计问题,给出了严格正实弹性控制器存在的充分条件. 相似文献
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For a single-motor parallel hybrid electric vehicle, during mode transitions （especially the transition from electric drive mode to engine/parallel drive mode, which requires the clutch engagement）, the drivability of the vehicle will be signifi- cantly affected by a clutch torque induced disturbance, driveline oscillations and jerks which can occur without adequate controls. To improve vehicle drivability during mode transitions for a single-motor parallel hybrid electric vehicle, two controllers are proposed. The first controller is the engine-side controller for engine cranking/starting and speed synchronization. The second controller is the motor-side controller for achieving a smooth mode transition with reduced driveline oscillations and jerks under the clutch torque induced disturbance and system uncertainties. The controllers are all composed of a feed-forward control and a robust feedback control. The robust controllers are designed by using the mu synthesis method. In the design process, control- oriented system models that take account of various parameter uncertainties and un-modeled dynamics are used. The results of the simulation demonstrate the effectiveness of the proposed control algorithms. 相似文献