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首页> 外文会议>OCEANS 2009, MTS/IEEE Biloxi - Marine Technology for Our Future: Global and Local Challenges >Research on simulation of course control for large ship with wave disturbances in different sea conditions
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Research on simulation of course control for large ship with wave disturbances in different sea conditions

机译：不同海况下具有波浪干扰的大型船舶航向控制仿真研究

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When a large ship sails on the sea, it must meet the random wave disturbances and produce complicated movement form. It is very important to consider the random wave disturbance force and moment in the ship manoeuvring simulation and ship control system design. So it is really important to research on wave signal and figure out the disturbance force and moment of ocean wave acting on ship. The wave is a very complex random process, and the shape of ship is also very complicated, therefore it is a more complicated problem to compute the wave disturbance force and moment acting on ship. It mainly solves the difficult problem of numerical simulation of wave disturbances in ship motion control and simulation area. The wave disturbance force and moment acting on the ship sailing on the sea are simulated. The influence of ocean wave to the four freedom degree movement of large ship is also researched and analyzed under different sea conditions. Based on statistical superposition theory, Pierson-Moskowitz (P-M) single-parameter standard wave spectrum is used to simulate a random long-crested sea wave. A kind of wave disturbance mathematical model is established and then the random wave disturbance force and moment effecting on the large ship is calculated and simulated real time under different sea conditions. A ship autopilot is used to control the ship course and the ship motion trajectory under different wave encounter angles at different sea conditions are attained by simulation. The calculated wave disturbances are quite significant in four freedom degrees of the large ship. Thus, the ship course must be controlled. A ship autopilot is used to control the large ship to keep or change the ship course. Finally, the ship control simulation with different wave disturbances is successfully realized. The simulation experiment results show that the random wave disturbances have big influences on the large ship at sea and the wave influences are different in different sea con-ditions or different wave encounter angles, which result in different ship control effects. The established wave disturbance model and the wave disturbance simulation results have a good importance on the ship control system research.
机译：当一艘大船在海上航行时，它必须遇到随机波干扰并产生复杂的运动形式。在船舶操纵仿真和船舶控制系统设计中，考虑随机波干扰力和力矩是非常重要的。因此，研究海浪信号并弄清海浪作用在船上的干扰力和力矩确实很重要。波浪是一个非常复杂的随机过程，船的形状也非常复杂，因此计算作用在船上的波浪干扰力和力矩是一个更复杂的问题。它主要解决了船舶运动控制与仿真领域中波浪干扰数值模拟的难题。模拟了波浪干扰力和作用在海上航行的船舶上的力矩。还研究和分析了不同海况下海浪对大型船舶四自由度运动的影响。基于统计叠加理论，使用Pierson-Moskowitz（P-M）单参数标准波谱来模拟随机的长波海浪。建立了波浪干扰数学模型，然后计算了随机波浪干扰力和作用在大型船舶上的力矩，并在不同的海况下进行了实时仿真。利用船舶自动驾驶仪控制船舶航向，并通过仿真获得了在不同海况下不同波浪遭遇角下的船舶运动轨迹。计算得出的波浪干扰在大型船舶的四个自由度中非常重要。因此，必须控制船舶航向。船舶自动驾驶仪用于控制大型船舶以保持或改变船舶航向。最后，成功实现了不同波浪干扰的船舶控制仿真。仿真实验结果表明，随机波干扰对海上大型船舶影响较大，不同海况下波影响不同。 方向或波浪遇到的角度不同，这会导致不同的船舶控制效果。建立的波浪扰动模型和波浪扰动仿真结果对船舶控制系统的研究具有重要的意义。

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