Development of the Rudder Roll Control System of a Vessel in Irregular Waves

Lee, Seung-Keon; Lee, Gyoung-Woo; Hwang, Sung-Jun; Kang, Dong-Hoon

Journal of Navigation and Port Research 2005;29(10):839-845.
Published online December 31, 2005.

조타에 의한 선박의 횡요 감소시스템의 개발

이승건, 이경우, 황성준, 강동훈

Development of the Rudder Roll Control System of a Vessel in Irregular Waves

Seung-Keon Lee, Gyoung-Woo Lee, Sung-Jun Hwang, Dong-Hoon Kang

Abstract

A rudder roll control system is developed and analyzed to control the yawing, and rolling motion of ship in irregular waves. The 4-DOF maneuvering equations of motion are derived to carry out the simulation of the motion of a ship and the wave forces are considered as the external forces of a ship in the simulation. The wave forces in the time domain analysis are generated from the frequency transfer function calculated by 3-D source distribution method. The rudder roll control system is developed by linear combination of PD rudder controllers of yawing and rolling motion. Rudder rate speed and Schilling rudder are considered to increase the roll reduction efficiency.

Key Words: Rudder roll control system;Irregular wave forces;Rudder rate speed;Schilling rudder;Roll reduction efficiency