Periodic event-triggered dynamic output feedback control for networked control systems subject to packet dropouts

This paper proposes a co-design method of dynamic output feedback control law and periodic eventtriggered control (PETC) strategy to tolerate a maximum allowable number of successive packet dropouts (MANSDs) in networked control systems (NCSs). For the purpose of striking a balance between saving limited communication resources and reducing complexity of the transmission implementation, we present the periodic event-triggering mechanism (PETM), in which the triggering conditions only needs to be monitored at each event-verifying instant.In NCSs, packets often suffer from some interference in network transmission, such as packet losses. For packet dropouts, we introduce a dropout variable and model the whole closed-loop systems as a hybrid system. Furthermore, some stability conditions for co-design are given by a novel Lyapunov function and stability theorems of hybrid systems, and the explicit designs parameters of controller and triggering conditions are presented to ensure L2 stability. Finally, two illustrated examples are given to show the effectiveness of the proposed design methods. (c) 2023 ISA. Published by Elsevier Ltd. All rights reserved.

Automated summary

This paper proposes a co-design method for dynamic output feedback control and periodic event-triggered control in networked control systems, to tolerate a certain number of consecutive packet dropouts. By introducing a periodic event-triggering mechanism and modeling the closed-loop system as a hybrid system, the stability conditions and specific design parameters are used to ensure system stability.