Relaxed Switching Average-Event-Triggered Sliding Mode Control of Cyber-Physical Photovoltaic Microgrid Under False Data Injection Attacks

Abstract

This brief concerns the observer-based sliding mode control issue of cyber-physical photovoltaic microgrid subject to false data injection attacks. To optimize communication efficiency, a novel relaxed switching average-event-triggered protocol is proposed, offering two key advancements. First, by incorporating average historical information, the protocol mitigates unnecessary triggering events caused by data jitter, while a Jensen inequality-based relaxed triggering condition extends the inter-event interval. Second, a waiting period mechanism is embedded to inherently exclude Zeno behavior, eliminating the need for complex theoretical proofs. An attack-resilient sliding mode controller is designed using observed state, and a switched distributed delay system is presented to describe the event-triggered sliding mode control system. Several novel criteria are deduced to figure out the controller, observer and triggering gains to assure the system exponential stability. At last, comparative simulations validate the presented strategy.