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Stability Analysis of Event-Triggered Networked Control Systems with Time-Varying Delay and Packet Loss

WANG Zhao · SUN Jian · BAI Yongqiang   

  1. The Key Laboratory of Intelligent Control and Decision of Complex System, Beijing Institute of Technology,Beijing 100081, China. Email: byfengyun@bit.edu.cn.
  • Online:2021-02-25 Published:2021-02-02

WANG Zhao · SUN Jian · BAI Yongqiang. Stability Analysis of Event-Triggered Networked Control Systems with Time-Varying Delay and Packet Loss[J]. Journal of Systems Science and Complexity, 2021, 34(1): 265-280.

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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