【作者】 刘鑫；

【导师】 任鸿翔；

【作者基本信息】 大连海事大学 ， 交通信息工程及控制， 2011， 硕士

【摘要】 随着船舶的逐渐大型化、特种化,拖轮助操在船舶进出港和靠离泊中的作用日益突出,与拖轮相关的培训和安全评估等也越来越重要,迫切需要在航海模拟器中增加拖轮单元。在拖轮单元的视景中,缆绳是重要的组成部分,也是最能体现模拟逼真程度的因素之一。本文在大连海事大学V.Dragon 3000系列模拟器的基础之上,分析了缆绳在靠离泊作业时的张力模型并计算了缆绳在满足虎克定律和不满足虎克定律两种情况下的张力大小；利用弹簧-质点模型方法建立了缆绳的受力模型并可实现对缆绳绞缆、出缆过程的交互控制；实现了缆绳与岸壁之间的碰撞检测,进而实现了缆绳的三维可视化。本文提出的方法综合考虑了缆绳所受到的张力、重力、摩擦力、空气阻力等各种外力对缆绳运动的影响,可逼真地绘制缆绳,并可模拟缆绳由弯曲到拉直的运动过程,同时,实现了缆绳与岸壁间的碰撞检测,满足了航海模拟器对缆绳的显示要求。更多还原

【Abstract】 With ships are developing in the direction of large-scale and special, tug assistance operation becomes more important when ships into and out of ports and berthing operations, safety evaluation and training associated tug is also becoming more important, so it’s imperative to add tug unit into navigation simulator.In the scene system of tug unit, cable is an important part and one of factors which can most reflect the realistic level of simulation. This paper is based on V. Dragon 3000 Series simulator by Dalian Maritime University, researching on cable’s force model; Analysing cable tension model in berthing operations and calculating the cable force which meet the Hooke’s Law and doesn’t meet Hooke’s Law;constructing the cable force model using spring-mass model and realizing cable’s three-dimensional visual display.Considering various external forces of the cable suffered, this paper can realistically render cable and simulate the movement process from bend to straighten. At the same time, realizing the collision detection between cable and shore, meeting the requirements of the cable in navigation simulator.更多还原