Automatic Control Systems for Replenishment at Sea

A theoretical study of the Replenishment at Sea Maneuver, on the basis of mathematical modeling and digital simulation techniques is carried out. Concepts of linear multivariable systems theory are introduced to implement actual modeling techniques. A mathematical model of a one plant - two ship system with multiple inputs and outputs is developed. Risk of collision during the Approach phase is the primary consideration. A thorough analysis of the ships natural behavior under differing initial conditions is accomplished, thus establishing points of collision. An Automatic Station Keeping Control System, which guarantees safety and precision during the maneuver is designed and succesfully tested.