风浪流作用下海上救援船轨迹跟踪能力研究  

Investigation of the Maritime Rescue Ship’s Trajectory Tracking Ability in Winds, Waves and Currents

作　　者：宋春辉 韩芸[3] 付世晓[1,2] 欧绍武 位巍[1,2] SONG Chun-hui;HAN Yun;FU Shi-xiao;OU Shao-wu;WEI Wei(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China;Marine Design and Research Institute of China,Shanghai 200011,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]高新船舶与深海开发装备协同创新中心,上海200240 [3]中国船舶及海洋工程设计研究院,上海200011

出　　处：《船舶力学》2020年第12期1584-1594,共11页Journal of Ship Mechanics

基　　金：Supported by Shanghai Science and Technology Program (Grant No.19JC1412801;19JC1412802);Joint Funds of the National Natural Science Foundation of China (Grant No.U19B2013);the NationalScience Fund for Distinguished Young Scholars (Grant No.51825903)。

摘　　要：在海上救援过程中,两船受到的风浪流载荷之间相互干扰,十分复杂,因此救援船需要通过动力定位系统跟踪失事船的轨迹。本文建立了双船时域运动的仿真模型,用以研究海上救援过程中PID控制系统的可行性;应用三维势流理论求解双船的波浪载荷,考虑了双船间的相互干扰,而风载荷和流载荷则通过经验公式计算得到,并考虑遮蔽引起的折减;为了评估不同的救援策略,针对浪向角、海况和双船间距进行了敏感性分析。仿真结果表明,风流载荷对于失事船舶最终的艏摇状态具有显著影响,在恶劣海况下定位误差将显著增大,90°的风(或流)向角、偏远些的船间距和较低的海况将有利于救援。For rescue at sea,the mutual interference between two ships in winds,waves and currents is complex and thus a dynamic positioning systemis needed for a rescue ship to follow the track of an endangered ship.In this paper,a time domain simulation is established to investigate the feasibility of a PID controller for rescue at sea.Three-dimensional potential theory is applied for determining wave loads considering their hydrodynamic interaction while wind and current loads are estimated by empirical formulas considering shielding effects.To evaluate the effects of different rescue strategies,a sensitivity analysis is applied in terms of wave angles,sea states and distances between two ships.The results show that wind and current loads have significant effect on the final yaw state of the endangered ship.The positioning error may increase due to larger environmental loads.And a proper wind(or current)angle of near 90°,a little far distance and a low sea state are beneficial to sea rescue.

关 键 词：海上救援 时域 风流载荷 动力定位 PID控制器 

分 类 号：TV131.2[水利工程—水力学及河流动力学]