共查询到20条相似文献,搜索用时 78 毫秒
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考虑一类广义时滞系统的状态反馈H∞控制问题,目的是设计状态反馈控制律,使得闭环系统渐近稳定,且满足一定的H∞性能指标,控制律的设计只需求解一组LMI。数值算例说明了所给方法的有效性。 相似文献
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针对同时含有变时滞和参数不确定性的奇异系统,研究了基于静态输出反馈的鲁棒H∞控制问题。采用Lya-punov泛函方法,给出了奇异系统时滞依赖渐近稳定且具有H∞范数界γ充分条件;利用含等式约束的线性矩阵不等式(LMI)方法,给出了此类系统存在输出反馈的时滞依赖充分条件,该条件等价于严格线性矩阵不等式可解性问题,利用严格LMI的可行解,得到控制器矩阵的参数化表示。与已有结果相比,此鲁棒控制器的渐近稳定性条件宽松,克服了时滞奇异系统稳定性问题条件中的等式约束。数值算例说明了该方法的有效性。 相似文献
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线性离散时滞系统的输出反馈耗散控制 总被引:4,自引:1,他引:4
考虑线性离散时滞系统的二次型耗散控制问题,设计动态输出反馈使闭环系统渐近稳定且严格二次型耗散.先将系统严格二次型耗散性转化为线性矩阵不等式的可解性,得到了系统渐近稳定且严格二次型耗散的条件.然后讨论输出反馈耗散控制问题,给出了控制器的存在条件,总结出了控制器的综合方法、步骤.所得结果可为离散时滞系统的无源控制和H∞控制提供统一框架,也为离散时滞系统的分析和设计提供了一种更灵活、保守性更小的方法. 相似文献
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Robust Output Feedback Controller Design for Time‐Delayed Teleoperation: Experimental Results 下载免费PDF全文
In this paper, a robust output feedback control strategy is proposed for a nonlinear teleoperation system which can deal with stability as well as transparency despite the variable time‐delay and uncertain dynamics. The proposed approach is composed of two steps. First, local Lyapunov based adaptive controllers are applied to both master and slave sides in order to suppress the nonlinearities in the system dynamics. Afterwards, a new observer‐based controller scheme is proposed to achieve stability and performance (transparency) of the teleoperation system. Using the Lyapunov techniques, stability and performance objectives are cast as some linear matrix inequality (LMI) feasibility conditions. To evaluate the performance of the proposed controller, a set of simulations and experiments are performed. Through simulation results, it is demonstrated that the proposed approach significantly outperforms the existing methodologies reported in the literature. 相似文献
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考虑汽车转向控制中出现的微分包含系统的控制问题。首先用一非仿射不确定系统来描述这一微分包含系统,基于耗散理论分析了这一类非仿射不确定系统的鲁棒控制问题。并针对该非线性系统的有界性,给定系统鲁棒稳定的充分条件是满足一线性矩阵不等式,最后给出了一个仿真计算实例以验证算法的有效性。 相似文献
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Predictor Feedback Stabilization of Stochastic Linear Delayed Systems with Both Additive and Multiplicative Noises 下载免费PDF全文
Ali Javadi Mohammad Reza Jahed‐Motlagh Ali‐Akbar Jalali 《Asian journal of control》2018,20(4):1637-1646
In this paper we investigate memory control of stochastic linear delayed systems with both additive and multiplicative noises. A new formula is first presented to obtain the prediction vector from the system dynamics and then it is used for feedback to reduce the input delay in the original delayed system. To ensure the stability of closed‐loop system, some matrix inequality conditions are given that in the case of feasibility provide the stabilizing gain of the predictor controller. The proposed method is applied to stochastic quarter‐car model of an active suspension system to show the effectiveness of the approach. 相似文献
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The current paper investigates guaranteed‐cost output consensus analysis and design problems for high‐order linear time‐invariant singular multi‐agent systems with constant time delays, which can realize suboptimal output consensus control. Firstly, a new output consensus protocol with a suboptimal index and a single delay is proposed to realize the tradeoff design between output consensus regulation performances and control energy consumptions. Then, sufficient conditions for guaranteed‐cost output consensus and consensualization are derived in terms of linear matrix inequalities by a combined tool from the Lyapunov‐Krasovskii approach and the free‐weighting matrix technique, respectively, and the output consensus function is determined on the basis of the First Equivalent Form. Finally, a numerical example is performed to demonstrate the effectiveness and conservativeness of theoretical results. 相似文献
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A method for synthesizing dynamic output feedback controllers for continuous time systems presenting actuators constrained in both amplitude and rate is proposed here. The considered controller structure is composed of a saturating integrator block connected to a linear compensator output, delivering a signal to the actuator input inside all its bounds. Considering that the plant is submitted to L 2 bounded disturbances, linear matrix inequality conditions are proposed in order to ensure both external and internal stability of the closed loop system. 相似文献
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In this paper, we consider stochastic stability analysis and H∞ disturbance attenuation for a class of discrete-time nonlinear stochastic retarded systems whose nonlinearities are described by statistical means. First a sufficient condition on mean square stability, which is independent of delay, is proposed using the stochastic Lyapunov functional approach. Then, H∞ disturbance attenuation property of the system is analyzed. It is shown that the H∞ disturbance attenuation of such nonlinear systems can be reduced to a linear matrix inequality problem. 相似文献
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讨论了线性时滞系统带调节因子的状态反馈控制问题. 减小调节因子时, 所允许的时滞范围将得到扩大. 时滞固定时, 不同的调节因子导致不同的反馈增益, 从而可以通过选取合适的调节因子来优化闭环系统的动态性能. 通过设计调节因子的自适应律, 并将其引入到反馈增益存在的条件中, 得到了实时变化的反馈增益. 与用固定反馈增益所取得的控制效果相比较, 本文方法具有更弱的保守性, 且系统的动态性能更优. 仿真示例验证了本文方法的有效性. 相似文献
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本文研究仅仅在传感器与控制器之间存在网络的网络化控制系统的观测器以及控制器的设计问题.考虑系统同时存在随机时滞和数据包丢失的情况,通过求解线性矩阵不等式,设计出了保证网络化控制系统渐近稳定的观测器以及控制器.最后给出一个实例说明了此设计方法是有效的. 相似文献