Abstract
Turning performance due to ship's steering is different from each steering angle. Therefore, the turning performance due to steering is time varying system. First, this study identifies the ship's maneuverability, which is expressed as Auto-Regressive Moving Average (ARMAX) model, by each steering angle. Second, time varying parameters of ARMAX model are verified. Finally, this study designs a control system for the time varying steering system. The angular velocity of turning is controlled by applying Generalized Minimum Variance Control (GMVC) for time varying system. Especially, GMVC is arranged the polynomial's multiply for the time varying steering system.
