CONTROL METHOD AND DEVICE FOR MAINTAINING FIXED POINT FOR SHIP

摘要

PROBLEM TO BE SOLVED: To prevent a GPS signal receiving antenna for maintaining a hull at a fixed point from greatly changing in position because of the rocking of the hull, resulting in the wasteful response of an actuator for control of the position. SOLUTION: The actuator 2 is driven by a controller 1 according to a position command value so as to control the position of the hull. With the position of the hull controlled to be maintained at the fixed point by means of a position signal of a GPS 4, sensitivity is reduced by an amount equal to the rocking frequency range of the hull 3, from a signal of a manipulated variable for controlling the hull position, so as to prevent control for maintaining the hull position from being brought into action because of the rocking of the hull. Thus, the actuator 2 is restrained from operating for position control due to the rocking of the hull.