Transfer Function for a Controllable Pitch Propeller with Added Water Mass

IF 2 3区工程技术 Q2 ENGINEERING, MARINE

Polish Maritime Research Pub Date : 2023-12-01 DOI:10.2478/pomr-2023-0060

Volodimir Leshchev, Igor Maslov, Oleksandr Palagin, Andrii Naydyonov

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引用次数: 0

Abstract

Abstract The relevance of this study lies in the fact that it presents a mathematical model of the dynamics of the propulsion system of a ship that takes into consideration the mass of water added to it. The influence of this phenomenon on the resonant frequencies of the propeller shaft is examined, and a transfer function for a controllable-pitch propeller is obtained for various operating modes. The purpose of the study is to improve the calculation of the dynamic operating modes of a controllable-pitch propeller by examining the features of a visual models. The VisSim software package is used in the study. A visual model is developed that considers the influence of the rotational speed on the value of the rotational inertia attached to the variable-pitch screw of the mass of water, and a special transfer function is proposed. The study shows that a transfer function of this type has a loop enabling negative feedback. An analysis of the operation of the propeller shaft at its resonant frequency is conducted based on the application of frequency characteristics using the transfer functions obtained. We show that in the low-frequency region, a consideration of the added rotational inertia using the proposed transfer function leads to a significant difference compared to the result obtained with the existing calculation method.

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添加水质量的可控螺距螺旋桨的传递函数

摘要本研究的意义在于，它提出了一个考虑到水质量的船舶推进系统动力学数学模型。研究了这一现象对螺旋桨轴共振频率的影响，并获得了可控螺距螺旋桨在各种工作模式下的传递函数。本研究的目的是通过研究可视化模型的特点来改进可控螺距螺旋桨动态工作模式的计算。研究中使用了 VisSim 软件包。开发的可视化模型考虑了转速对附着在水团可变螺距螺杆上的转动惯量值的影响，并提出了一个特殊的传递函数。研究表明，这种类型的传递函数具有负反馈回路。根据频率特性应用所获得的传递函数，对螺旋桨轴在共振频率下的运行进行了分析。我们发现，在低频区域，使用所提出的传递函数来考虑增加的转动惯量，与使用现有计算方法得出的结果相比会有显著差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polish Maritime Research 工程技术-工程：海洋

CiteScore

3.70

自引率

45.00%

发文量

审稿时长

>12 weeks

期刊介绍： The scope of the journal covers selected issues related to all phases of product lifecycle and corresponding technologies for offshore floating and fixed structures and their components. All researchers are invited to submit their original papers for peer review and publications related to methods of the design; production and manufacturing; maintenance and operational processes of such technical items as: all types of vessels and their equipment, fixed and floating offshore units and their components, autonomous underwater vehicle (AUV) and remotely operated vehicle (ROV). We welcome submissions from these fields in the following technical topics: ship hydrodynamics: buoyancy and stability; ship resistance and propulsion, etc., structural integrity of ship and offshore unit structures: materials; welding; fatigue and fracture, etc., marine equipment: ship and offshore unit power plants: overboarding equipment; etc.