基于舒适度和最小阻力的带拦截器的滑行船动态纵倾控制

IF 3.9 4区 工程技术 Q1 ENGINEERING, MARINE Brodogradnja Pub Date : 2023-01-01 DOI:10.21278/brod74101
O. Sahin, E. Kahramanoğlu, F. Cakici, E. Pesman
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引用次数: 2

摘要

目前,拦截器常用于高速平行船,通过减小动态纵倾来减小总阻力和提高舒适性。它们可以手动控制,也可以通过使用合适的闭环控制系统自动控制。因此,在本研究中,提出了一种自动控制系统,通过减少静水中的动态修剪来最小化总阻力。为达到这一目的,提出了一种能表示二自由度圆柱刨船垂直运动的数学模型。模型中使用的系数采用Savitsky方法计算。用同样的方法计算了标准动态纵倾角和阻力方面的最佳动态纵倾角。控制动作采用线性全状态反馈控制策略(线性二次型调节器),考虑前向转速的变化,求出瞬时叶片高度。因此,以控制为导向的模型能够改变叶片高度,从而在不同的前进速度和速度剖面下,根据船舶的总阻力达到最佳的纵倾角。结果表明,所设计的线性二次型调节器控制策略对参考配平跟踪问题是成功的。
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CONTROL OF DYNAMIC TRIM FOR PLANING VESSELS WITH INTERCEPTORS IN TERMS OF COMFORT AND MINIMUM DRAG
Nowadays, interceptors are often used to decrease total resistance and enhance comfort by reducing dynamic trim for high-speed planing vessels. They can be controlled manually as well as automatically by using a suitable closed-loop control system. Thus, in the present study, an automatically controllable system is presented to minimize the total resistance by reducing the dynamic trim in calm water. To reach this aim, a mathematical model which can represent the 2 degree of freedom vertical motion of a prismatic planing vessel is presented. The coefficients used in the model are calculated by using the Savitsky method. The standard dynamic trim angle and the optimum ones in terms of resistance are calculated by using the same method. For control action, a linear full state feedback control strategy (linear quadratic regulator) is applied, and instantaneous blade heights are found considering the change in forward speed. Therefore, the control-oriented model is able to change the blade height to reach the optimum trim angle in terms of the total resistance of the vessel for different forward speeds and speed profiles. The results show that the designed linear quadratic regulator control strategy is successful for reference trim tracking problems.
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来源期刊
Brodogradnja
Brodogradnja ENGINEERING, MARINE-
CiteScore
4.30
自引率
38.90%
发文量
33
审稿时长
>12 weeks
期刊介绍: The journal is devoted to multidisciplinary researches in the fields of theoretical and experimental naval architecture and oceanology as well as to challenging problems in shipbuilding as well shipping, offshore and related shipbuilding industries worldwide. The aim of the journal is to integrate technical interests in shipbuilding, ocean engineering, sea and ocean shipping, inland navigation and intermodal transportation as well as environmental issues, overall safety, objects for wind, marine and hydrokinetic renewable energy production and sustainable transportation development at seas, oceans and inland waterways in relations to shipbuilding and naval architecture. The journal focuses on hydrodynamics, structures, reliability, materials, construction, design, optimization, production engineering, building and organization of building, project management, repair and maintenance planning, information systems in shipyards, quality assurance as well as outfitting, powering, autonomous marine vehicles, power plants and equipment onboard. Brodogradnja publishes original scientific papers, review papers, preliminary communications and important professional papers relevant in engineering and technology.
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