船舶动力定位海洋环境风力扰动仿真  

Simulation of Wind Disturbances for Ship Dynamic Positioningin Marine Environment

作　　者：李文华[1] 宋健[1] 杜佳璐[2] 陈海泉[1] 

机构地区：[1]大连海事大学轮机工程学院,辽宁大连116026 [2]大连海事大学信息科学技术学院,辽宁大连116026

出　　处：《计算机仿真》2012年第11期154-157,285,共5页Computer Simulation

基　　金：国家自然科学基金资助项目(51079013;51109021);交通部应用基础研究项目(2012-329-225-070);辽宁省教育厅高等学校科研资助项目(LT2010013);中央高校基本科研业务费专项资金资助项目(2011QN109)

摘　　要：在海洋环境对船舶动力定位系统影响的研究中,动力定位系统控制器的优化设计,可保证船舶控制系统的稳定性和跟踪精度。为了有效地量化风力扰动对动力定位船舶的影响,建立风力扰动的数学模型,根据Harris风速变动功率谱和一种新型风压系数计算方法,基于Matlab软件平台建立关于风力扰动的仿真平台,可应用于模拟任意风速和风向条件下的海洋环境对动力定位船舶的风扰动力和力矩。以一艘供给船为例,设定不同的风速、风向角值,在所建立仿真平台上进行仿真计算,仿真结果证明风力扰动建模策略的有效性,仿真平台可用于船舶动力定位系统控制器设计的仿真验证,具有很好的通用性、实时性和逼真性。The effect of marine environment on the vessel dynamic positioning （DP） systems is the foundation of performing control law design and the necessary step. In order to effectively calculate the forces and moments acted on the DP vessels by marine environment, the paper buih the mathematical model of the wind environmental disturb- ances. By means of Harris wind gust spectrum and a new method to calculate wind force/torque coefficients, based on the Matlab/Simulink, a simulation platform for the wind disturbance was set up, which can be used in any wind speed and any wind angle. Furthermore, a simulation based on a supply ship is carried out with different rated values for both wind speed and wind angle, and the effect of wind disturbances forces and moments on the ship was researched. The results show that this simulation strategy is both correct and effective. This simulation platform can be used for simulation, testing and verification of the design of dynamic positioning systems controller, and has good versatility, real-time simulation and verisimilitude.

关 键 词：船舶 动力定位系统 风力扰动 功率谱 风压系数计算 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]