시스템 식별법을 이용한 선박의 횡동요 계수 추정

Abstract

When a fast container ship or a naval vessel is turning, comparable roll motions are occurred. Therefore, roll effect has to be considered in the horizontal equations of motion to predict the maneuverability well. In this thesis, the new method to determine the roll model structure and estimate its coefficients by applying the system identification technique to the data of sea trial tests was proposed. The simulation results from the estimated roll model were well consistent with the true one in spite of the difference between the estimated and the true model structures of the roll hydrodynamic moment.