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1.
This paper is concerned with the H ∞ control problem for a class of systems with bounded random delays and consecutive packet dropouts that exist in both sensor‐to‐controller channel and controller‐to‐actuator channel during data transmission. A new model is developed to describe possible random delays and packet dropouts by two groups of Bernoulli distributed stochastic variables. To avoid the state augmentation, a full‐order observer‐based feedback controller is designed via LMI approach. Based on the Lyapunov theory, a sufficient condition is provided to guarantee the closed‐loop networked system to be asymptotically mean‐square stable and achieve the prescribed H ∞ disturbance‐rejection‐attenuation level. The simulation examples illustrate the effectiveness of the proposed method. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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该文考虑具有网络诱导延时和数据丢包现象的网络控制系统稳定性问题。通过引入一种新的界定方法,给出了一个保守性更小的稳定性结果。数例验证了该文结果的有效性。 相似文献
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Robust Stability and Stabilization Of TCP‐Networked Control Systems with Multiple Delay System Modeling 下载免费PDF全文
This paper presents a new model for networked control systems (NCSs) under transmission control protocol (TCP) as a multiple‐delay system by considering both sensor to controller and controller to actuator delays. An analytical TCP model has been considered for the network part, and an active queue management (AQM) controller is designed to regulate the desired queue length, which ensures holding the network induced delay and its variation within their lower bounds. The model is assumed to possess structured uncertainties due to the stochastic nature of the network. Robust stability and stabilization conditions are derived in terms of linear matrix inequalities (LMIs) by applying the Lyapunov‐Krasovskii stability criterion. Illustrative examples are presented and it has been shown that the proposed method will obtain less conservative results compared to the existing approaches in the literature. 相似文献
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In this paper, we present an interval model of networked control systems with time-varying sampling periods and time-varying network-induced delays and discuss the problem of stability of networked control systems using Lyapunov stability theory. A sufficient stability condition is obtained by solving a set of linear matrix inequalities. In the end, the illustrative example demonstrates the correctness and effectiveness of the proposed approach. 相似文献
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一类基于模型的时延网络控制系统的稳定性分析 总被引:6,自引:0,他引:6
针对连续、线性被控对象状态无法直接测量得到的情况,设计了状态观测器,在网络传输信号的时间间隔内,依据被控对象模型计算控制信号,以减少网络的使用率.在此基础上,给出了一类基于模型的时延网络控制系统全局指数稳定的充要条件,该条件受网络信号更新时间、被控对象模型误差及网络诱导时延等因素的影响.仿真结果表明了该稳定性条件的正确性. 相似文献