Ship posture stabilization system

Abstract

The present invention relates to a ship posture stabilization system including a plurality of trim tab members rotatably installed on left and right sides of a stern of a ship, tab drivers installed on the trim tab members to rotate the trim tab members so as to generate a lifting force due to the trim tab members, a posture sensor installed in the ship to measure a posture of the ship, and a controller which controls the tab drivers to rotate the trim tab members so as to stabilize the posture of the ship when it is determined that hull rolling of the ship occurs on the basis of detection information provided from the posture sensor.

What is claimed is: 
     
         1 . A ship posture stabilization system comprising:
 a plurality of trim tab members rotatably installed on left and right sides of a stern of a ship;   tab drivers installed on the trim tab members to rotate the trim tab members so as to generate a lifting force due to the trim tab members;   a posture sensor installed in the ship to measure a posture of the ship; and   a controller configured to control the tab drivers to rotate the trim tab members so as to stabilize the posture of the ship when it is determined that hull rolling of the ship occurs on the basis of detection information provided from the posture sensor.   
     
     
         2 . The ship posture stabilization system of  claim 1 , further comprising a speed sensor installed in the ship to obtain information about a speed of the ship,
 wherein, when the hull rolling of the ship occurs, the controller adjusts a rotating angle of the trim tab member with respect to a longitudinal centerline of the ship according to the speed or an inclined angle of the ship on the basis of detection information provided from the speed sensor and the posture sensor.   
     
     
         3 . The ship posture stabilization system of  claim 1 , wherein in a case in which lateral rolling of the ship occurs, the controller rotates the trim tab member disposed at an inclined side with respect to a center of the ship among the trim tab members. 
     
     
         4 . The ship posture stabilization system of  claim 1 , wherein in a case in which a longitudinal centerline of the ship is inclined at an angle greater than or equal to a preset reference angle with respect to a water surface, the controller rotates the trim tab members to generate the lifting force at a rear side of the ship. 
     
     
         5 . The ship posture stabilization system of  claim 2 , wherein:
 a moving guide groove is formed in a lower surface of the trim tab member to extend in a front-rear direction so as to guide movement of water flowing along a lower portion of the trim tab member due to movement of the ship; and   a lateral width of the moving guide groove decreases toward a rear end portion from a front end portion so as to increase a speed of the water flowing along the lower surface of the trim tab member toward a rear side of the trim tab member.   
     
     
         6 . The ship posture stabilization system of  claim 3 , wherein:
 a moving guide groove is formed in a lower surface of the trim tab member to extend in a front-rear direction so as to guide movement of water flowing along a lower portion of the trim tab member due to movement of the ship; and   a lateral width of the moving guide groove decreases toward a rear end portion from a front end portion so as to increase a speed of the water flowing along the lower surface of the trim tab member toward a rear side of the trim tab member.