NON-FRAGILE CONTROL OF NETWORKED SYSTEMS UNDER EVENT-TRIGGERED MECHANISM

In order to solve the problems of networked control systems, such as bandwidth constraint, network-induced delay, external disturbance and controller parameter perturbation, a non-fragile output feedback control strategy based on event-triggered mechanismis proposed. To reduce bandwidth constraints, the event-triggered mechanism was introduced. Considering delay and disturbance, a comprehensive delay model for networked systems was established. A non-fragile controller was designed to eliminate the influence of controller parameter perturbation on the controlled system. An improved two-side Lyapunov-Krasovskii functional was introduced to derive the low conservative conditions for the H∞ stability of the closed-loop system, and the gain of the nonfragile controller was obtained. Simulation results show that the control strategy can effectively control system performance and save network resources.