Dynamic Output Feedback Control of Networked Systems With Medium Access Constraints

Chaoqun Zhu,Pan Zhang,Zibao Lu,Bin Yang,Liuyang Li

doi:10.1109/access.2021.3107324

Abstract

This paper is concerned with the dynamic output feedback control issue for a class of networked control systems with medium access constraints, network-induced delays and packet dropouts. It is assumed that the medium access constraints at both sides of the controller obey the Markov distribution, the upper bound of the network-induced delays is less than one sampling period, and the packet dropouts of networked channels can be described by i.i.d Bernoulli distribution processes. Then, the networked control systems are modelled as a class of asynchronous dynamic systems. According to Lyapunov stability theory and switching system theory, the dynamic output feedback controller is designed to guarantee the exponential stability of networked systems with the given decay rate. Finally, an illustrative example is provided to demonstrate the effectiveness of the proposed method.

Highlights

Networked control systems (NCSs) are closed-loop feedback control systems in which the controllers exchange information with the sensors and actuators over shared communication networks instead of the conventional pointto-point communication [1]-[3]
Remark2: This paper mainly focus on the design problem of dynamic output feedback control for a class of networked control systems with medium access constraints, network-induced delays and packet dropouts
The closed-loop networked systems with multiple communication constraints can be regarded as an asynchronous dynamic system with the structural event rate r, which is determined by the packet dropout occurrence probability and

Summary

Introduction

Networked control systems (NCSs) are closed-loop feedback control systems in which the controllers exchange information with the sensors and actuators over shared communication networks instead of the conventional pointto-point communication [1]-[3]. The presence of network in control systems has given rise to multiple communication constraints for modeling, analysis, and control of NCSs, such as, medium access constraints, network-induced delays, packet dropouts, quantization effects, etc. These communication constraints are potential sources of poor performance and instability, see, e.g., [6]-[9] and references therein. The purpose of this paper is to investigate the dynamic output feedback control problem for the networked systems by considering medium access constraints, networkinduced delays and packet dropouts simultaneously

Objectives

Results

Conclusion