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Two‐Controller Anti‐Windup Design for Enlarging Domain of Stability of Actuator Constrained State‐Delay Systems

This paper proposes the enlargement of domain of stability of an actuator constrained state time‐delay system with a novel dynamic two controller anti‐windup design. The design makes a departure from the conventional controller‐modeled actuator saturation‐plant topology to a controller‐modeled actuator saturation‐controller‐plant topology. Using linear matrix inequality‐based convex optimization, anti‐windup gains for two separate controllers are computed through delay independent and delay dependant Lyapunov–Krasovskii functionals, ensuring closed‐loop asymptotic stability. Consequently, the domain of stability of the new topology is comparatively ascertained and proved to be more enlarged. An application based motor control system validates the devised control law.