船舶液压推进系统功率匹配策略仿真研究

发布时间：2018-01-08 17:09

本文关键词：船舶液压推进系统功率匹配策略仿真研究　出处：《大连海事大学》2016年硕士论文　论文类型：学位论文

【摘要】：液压传动技术具有功率质量比大、过载安全性好、便于实现无级调速等特点,其在交通运输工程上应用十分广泛,包括工程车辆、船舶甲板机械等大多采用的是液压驱动,船舶侧推装置也有一部分采用液压驱动,然而液压驱动在船舶主推进装置上的应用并未推广。但随着海洋经济的发展,在传统直接推进方式无法满足各种工程作业船舶对推进装置性能要求的背景下,船舶液压推进因在操纵性、机动性及多工况匹配性能方面的优势,将有很大的实际应用价值。本文对一艘已知船型参数的拖网渔船进行了渔船阻力计算及螺旋桨初步设计,并为其确定了由双变量泵为单台变量马达供油来驱动螺旋桨的液压推进方案。在完成系统原理图设计后,对主要元件进行了选型计算,同时提出了功率匹配的概念,并对功率匹配控制策略进行了原理分析。为了对船舶液压推进系统功率匹配策略进行验证,建立了A4VSG变量泵、A6VM变量马达、变量泵控变量马达系统的数学模型和船桨数学模型,在AMESim环境下建立了液压推进系统仿真模型,在Matlab/Simulink环境下船桨负载及控制系统的仿真模型。并在不同工况下进行了两组联合仿真分析：直接起航与分级起航对比仿真分析,以及在功率匹配策略下船舶从设计工况转换到轻载工况与重载工况的仿真分析。通过仿真分析得出了如下结论,液压推进船舶起航需采用分级起航；液压推进系统功率匹配策略能够实现船舶在不同工况下的螺旋桨负载扭矩的马大排量自适应,使液压推进系统能工作在额定压力附近,同时可保证柴油机与变量泵的工作工况更接近额定工况点,使系统保持较高的工作效率。
[Abstract]:With high power mass ratio hydraulic transmission technology, overload safety, easy to realize stepless speed regulation and other characteristics, in the transportation engineering application is very extensive, including engineering vehicle, ship deck machinery is mostly used hydraulic drive, push device of ship side there is a part of the hydraulic drive, hydraulic drive in the ship yet the main propulsion device application did not promote. But with the development of marine economy, the traditional direct push method can not meet the various engineering operations of ship propulsion device performance requirements under the background of ship hydraulic propulsion for maneuverability, maneuverability and multi condition, performance advantages, will have great practical value. This paper trawl on a fishing ship parameters of fishing boats known resistance calculation and preliminary design for the propeller, and determined by the double variable pump for single variable motor oil to drive Dynamic propeller hydraulic propulsion scheme. The complete system design principle, the main components are calculated, and put forward the concept of power matching, the power matching and control strategy of the principle. In order to match the strategy for verification of ship hydraulic propulsion power system, established the A4VSG variable pump variable motor, A6VM, the mathematical model and the mathematical model of the variable paddle pump controlled variable motor system, in the AMESim environment to establish a system simulation model of hydraulic propulsion, the simulation model of the oar load in the Matlab/Simulink environment and control system. And analyzed two groups of CO simulation in different conditions: analysis and classification of simulation directly sail sail, and matching the ship under design condition from the strategy conversion to the simulation of light load condition and load condition analysis in power. Through simulation analysis and draws the following conclusion, hydraulic push The ship sailed into the grading sail; Martha displacement hydraulic propulsion system adaptive power matching strategy can realize the propeller under different working conditions of the ship load torque, the hydraulic propulsion system can work at the rated pressure near, at the same time ensuring the diesel engine and variable pump working condition is more close to the rated point, to keep higher work efficiency.

【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U664.3

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