采用动态禁止角的动力定位系统推力分配策略(英文)  

Thrust Allocation with Dynamic Forbidden Sectors in Dynamic Positioning System

作　　者：李博[1] 王磊[1] 

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200030

出　　处：《船舶力学》2014年第9期1024-1034,共11页Journal of Ship Mechanics

基　　金：Supported by National Natural Science Foundation of China(Grant No.51179103)

摘　　要：动力定位系统利用推力分配策略将总推力需求分配到多个推进器上。为了避免由推进器尾流造成的推进器之间的水动力干扰,通常会在推力分配策略中设置推进器回转方向的禁止角。全回转推进器水动力干扰试验的结果显示,推进器之间水动力干扰的程度前后随推进器的相对转速而变化。以模型试验的数据为基础,文章首次提出了动态禁止角的概念和数学模型。通过在推力分配策略中设置动态禁止角,回转方向的禁止角将随推进器的相对转速变化而进行调整,从而完全避免推进器之间的水动力干扰问题。动力定位系统的数值模拟结果显示新的推力分配策略可以给出更合理的分配结果。Thrust allocation is one component of dynamic positioning system, which allocates the thrusts generated by the control law among the thrusters. Generally, forbidden sectors are set in thrust allocation to prevent thrusters from entering certain azimuth angles in order to avoid large thrust loss on downstream thrusters. In this paper, a novel concept of dynamic forbidden sector is proposed. Based on the results of model test, the extent of forbidden sector could be adjusted according to the propellers＇ speed ratio. This method could guarantee required safety. And numerical simulation indicates that thrust allocation could give more reasonable results after the introduction of dynamic forbidden sectors.

关 键 词：动态禁止角 动力定位系统 推进器水动力干扰 

分 类 号：U661.313[交通运输工程—船舶及航道工程]