Treffer: Observer-based guaranteed cost control for networked interval type-2 T-S fuzzy systems with stealthy DoS attacks and dynamic hybrid-triggered mechanism.

This paper investigates a guaranteed cost control method for a specific class of output feedback networked interval type-2 (IT2) T-S fuzzy systems, considering stealthy denial-of-service (DoS) attacks, dynamic hybrid-triggered mechanism, as well as bounded disturbances. First, to alleviate network transmission burden, a dynamic hybrid-triggered mechanism that integrates both time-triggered and event-triggered mechanisms is addressed. Second, closed-loop stability of the networked control systems (NCSs) is demonstrated through the quadratic boundedness (QB) technique. Then, by applying Lyapunov stability theory, sufficient conditions are provided for the stability of the considered NCS and the existence of an observer-based output feedback guaranteed cost controller. Finally, the feasibility of the proposed control strategy is demonstrated through two simulation examples. • A dynamic hybrid-triggered mechanism and a novel attack model are proposed to save the communication resources and describe the stealthy DoS attack phenomenon in network transmission within NCS. • QB is innovatively applied to express the stability of IT2 T-S continuous fuzzy system encountering the unpredictable external disturbances, ensuring the system stability under constrained disturbances and enhancing control performance. • A guaranteed cost controller is designed based on stability conditions derived using the Lyapunov theory, incorporating a dynamic hybrid-triggered mechanism and stealthy DoS attacks. [ABSTRACT FROM AUTHOR]