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Stability Analysis of Event-Triggered Networked Control Systems with Time-Varying Delay and Packet Loss
Authors:Wang  Zhao  Sun  Jian  Bai  Yongqiang
Institution:1.The Key Laboratory of Intelligent Control and Decision of Complex System, Beijing Institute of Technology, Beijing, 100081, China
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Abstract:Networked control systems(NCSs) are facing a great challenge from the limitation of network communication resources. Event-triggered control(ETC) is often used to reduce the amount of communication while still keeping a satisfactory performance of the system, by transmitting the measurements only when an event-triggered condition is satisfied. However, some network-induced problems would happen inevitably, such as communication delay and packet loss, which can degrade the control performance significantly and can even lead to instability. In this paper, a periodic eventtriggered NCS considering both time-varying delay and packet loss is studied. The system is discretized into a piecewise linear system with uncertainty. Then the model is handled by a polytopic overapproximation method to be more suitable for stability analysis. Finally, stability conditions are obtained and presented in terms of linear matrix inequalities(LMIs). The result is illustrated by a numerical example.
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