超大型减摇鳍双泵控制系统研究

发布时间：2018-03-09 15:09

本文选题：超大型减摇鳍　切入点：波浪　出处：《浙江大学》2015年硕士论文　论文类型：学位论文

【摘要】：减摇鳍已经在海洋船舶上得到广泛的应用,其可以减小船舶的横摇运动,改善船舶的适航性、安全性以及工作环境。我国减摇鳍技术在近四十年中发展非常迅速,现在已经可以自主生产研发各种规格以及类型的减摇鳍。本课题基于超大型减摇鳍项目,研制一台双电液比例泵控液压机组,对液压机组设计及调试过程中船舶减摇模型及负载模型、双电液比例泵控制及减摇鳍控制、泵控系统节能特性以及项目调试过程中出现的泵吸空问题进行了研究。论文的主要研究内容如下：第一章,首先对国内外减摇鳍的研究现状及发展趋势进行了介绍,接着介绍了国内外阀控系统及泵控系统的研究现状,最后对课题的研究意义及研究内容进行了阐述。第二章,对海上随机长峰波浪进行了建模,引入了波浪能量谱密度的概念。基于所建立的随机波浪模型,分析了波倾角与有义波高、浪向角的关系。根据船舶在海上的受力,建立了船舶的横摇模型以及减摇模型。第三章,对超大型减摇鳍液压随动伺服系统进行了数学建模,同时建立了减摇鳍联合仿真模型。液压随动伺服系统是超大型减摇鳍的动力源,其性能的好坏决定了船舶减摇效果的优劣。文中对液压系统进行了详细的建模,分别对比例阀、比例泵以及双电液比例泵控系统进行了建模。最后建立了超大型减摇鳍系统的联合仿真模型,对系统进行仿真,在系统设计的过程中起到辅助设计的作用。第四章,对液压系统中双泵控制问题以及减摇鳍控制问题展开研究。首先对双泵控制系统的问题进行分析,验证双泵控制器的必要性。系统中所设计的双泵协调控制器提高了系统的开环增益,增加了系统的响应以及系统的抗外负载干扰能力。最后超大型减摇鳍液压随动伺服系统的非线性以及时变性给减摇鳍的控制带来困难,由于采用传统的PID控制算法不能得到理想的控制效果,本文中设计了自适应Fuzzy-PID控制算法。第五章,对超大型减摇鳍液压系统的节能特性以及调试过程中出现变量泵吸空问题进行了研究。分析了几种超大型减摇鳍液压控制系统的方案,对比系统本身的优缺点以及节能特性。最后对本项目调试过程中遇到的泵吸空问题进行了深入的分析,得到泵进出口液压锁是导致泵吸空的原因。第六章,对以上章节的研究内容进行总结,并对下一步的研究内容做出展望。
[Abstract]:Fin stabilizer has been widely used in marine ships, which can reduce ship rolling motion, improve ship airworthiness, safety and working environment. Now we have been able to produce and develop fin stabilizers of various specifications and types. Based on the super large fin stabilizer project, we have developed a dual electro-hydraulic proportional pump control hydraulic press unit. The anti-rolling model and load model of ship in the process of design and debugging of hydraulic press group, the control of double electro-hydraulic proportional pump and fin stabilizer, The energy saving characteristics of pump control system and the problems of pump suction in the process of project commissioning are studied. The main contents of this paper are as follows: in chapter 1, the research status and development trend of fin stabilizer at home and abroad are introduced. Then the research status of valve control system and pump control system at home and abroad is introduced. In this paper, the concept of wave energy spectral density is introduced. Based on the stochastic wave model, the relationship between wave inclination angle and wave height and wave direction angle is analyzed. The rolling model and anti-rolling model of ship are established. Chapter 3, the mathematical model of the hydraulic servo system of super large fin stabilizer is established. At the same time, the joint simulation model of fin stabilizer is established. The hydraulic servo system is the power source of the super large fin stabilizer, and the performance of the servo system determines the anti-rolling effect of the ship. The model of proportional pump and double electro-hydraulic proportional pump control system is established. Finally, the joint simulation model of super large fin stabilizer system is established. The simulation of the system plays an auxiliary role in the process of system design. Chapter 4th, The control problem of double pump and fin stabilizer in hydraulic system is studied. Verify the necessity of dual pump controller. The dual pump coordination controller designed in the system improves the open loop gain of the system. The response of the system and the ability of the system to resist the external load interference are increased. Finally, the nonlinearity of the super large fin stabilizer hydraulic servo system makes it difficult to control the fin stabilizer in time. Because the traditional PID control algorithm can not get the ideal control effect, the adaptive Fuzzy-PID control algorithm is designed in this paper. Chapter 5th, In this paper, the energy saving characteristics of super large fin stabilizer hydraulic system and the problem of variable pump suction during debugging are studied, and several schemes of hydraulic control system for super large fin stabilizer are analyzed. The advantages and disadvantages of the system and its energy-saving characteristics are compared. Finally, the problems of pump suction encountered in the debugging process of this project are analyzed in depth, and the reasons of pump suction are obtained by hydraulic lock of pump inlet and outlet. Chapter 6th, The research content of the above chapters is summarized, and the future research content is prospected.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U664.72

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