摘要
横摇阻尼和回复力矩的准确估算是预报船舶横摇运动的关键。论文针对横摇消灭曲线法估算横摇阻尼系数所存在的固有缺陷,提出了一种基于粒子群优化(PSO)算法,从试验得到的自由横摇衰减曲线来获取横摇阻尼和回复力矩系数的方法。该方法通过迭代调整横摇阻尼和回复力矩系数,使预报的自由横摇衰减运动时间历程与试验自由横摇衰减曲线之间的误差最小,从而实现对横摇阻尼和回复力矩系数的准确估算。
Accurate estimation of roll damping and the restoring moment coefficients is a key issue for predicting roll motion of a ship.In order to overcome the inherent drawbacks of the roll extinction curve method in estimating roll damping coefficients,a method based on particle swarm optimization(PSO)algorithm is proposed in this paper to obtain roll damping and restoring moment coefficients from experimental curve of free roll decay.In this way,roll damping and restoring moment coefficients can be exactly determined after iterative adjustment.
作者
曾智华
姜宜辰
邹早建
ZENG Zhihua;JIANG Yichen;ZOU Zaojian(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;School of Naval Architecture,Dalian University of Technology,Dalian 116024,China)
出处
《中国造船》
EI
CSCD
北大核心
2018年第3期89-97,共9页
Shipbuilding of China
基金
装发预研领域基金重点项目(6140207040301)
国家自然科学基金项目(51779140)
关键词
自由横摇衰减曲线
PSO算法
横摇阻尼系数
回复力矩系数
free roll decay curve
algorithm of particle swarm optimization
roll damping coefficients
restoring moment coefficients
