基于伸缩缸的甲板升降平台电液控制系统研究

发布时间：2018-05-06 05:00

本文选题：伸缩缸 + 电液控制系统　；参考：《浙江大学》2012年硕士论文

【摘要】：甲板升降平台是一种用于滚装船甲板顶升作业的移动设备。由于甲板顶升机需要在甲板与甲板之间进行爬坡行走,以及甲板顶升行程较长,导致采用加有定位导轨的单级缸同步控制方式变为不可能,所以必须采取执行元件为伸缩缸的同步控制方式。但是,由于伸缩缸存在作用面积突变、弱刚度特性以及系统结构耦合等问题,限制了基于伸缩缸的电液同步控制系统的应用与发展,因此,深入分析伸缩缸电液控制系统的内部控制特性,改善同步控制系统的性能,具有非常重要的意义。本课题从组成电液控制系统的各个控制元件出发,研究其对伸缩缸位移的影响,包括阀控缸模型、分流阀模型以及伸缩缸模型,在此基础上,利用仿真软件对理论分析结果进行初步对比,继而制造出甲板升降机对其进行现场实验,验证了系统设计的合理性和可靠性,为类似这种伸缩缸同步系统的设计提供了参考。第一章介绍了伸缩缸同步控制系统的研究现状,对本课题的研究背景、意义以及主要研究内容作了阐述。第二章提出了甲板升降平台的工作要求和目标性能,据此设计了升降平台的各个系统,并介绍和分析了升降平台的各个组成系统及其工作原理。第三章建立了甲板升降平台液压控制系统的数学模型,包括阀控缸模型,分流阀模型和伸缩缸模型,并据此分析了各个液压元件对伸缩缸位移的影响。第四章针对单缸模型、双缸模型以及四缸模型,利用AMESim软件和ADAMS软件进行仿真分析,将得出的仿真结果与理论分析结果进行比较。第五章针对不同负载下的甲板平台升降控制情况和不同的控制方式进行了比较实验,介绍了爬行现象及其危害,并提出了相应的解决措施。第六章总结了本课题所做的一些工作及其不足,对伸缩缸平台升降电液控制系统未来需要进行的研究进行了展望。
[Abstract]:Deck lifting platform is a kind of mobile equipment used for ro-ro ship deck lifting. Due to the need for the deck hoist to climb the slope between the decks and the longer lift stroke of the deck, it is not possible to adopt the single-stage cylinder synchronous control mode with positioning guide rail. So we must adopt the synchronous control mode of the telescopic cylinder. However, the application and development of electro-hydraulic synchronous control system based on telescopic cylinder are limited by the problems of sudden change of action area, weak stiffness and coupling of system structure. It is of great significance to analyze the internal control characteristics of the electro-hydraulic control system of the telescopic cylinder and to improve the performance of the synchronous control system. In this paper, the effect of each control element of electro-hydraulic control system on displacement of telescopic cylinder is studied, including valve-controlled cylinder model, shunt valve model and telescopic cylinder model. The simulation software is used to make a preliminary comparison of the theoretical analysis results, and then a deck lift is manufactured to carry out field experiments to verify the rationality and reliability of the system design, which provides a reference for the design of the synchronous system similar to this kind of telescopic cylinder. The first chapter introduces the research status of synchronous control system of telescopic cylinder, and describes the research background, significance and main research content of this subject. In the second chapter, the working requirements and the target performance of the deck platform are put forward. Based on this, each system of the platform is designed, and the composing system and the working principle of the platform are introduced and analyzed. In the third chapter, the mathematical models of hydraulic control system of deck lifting platform are established, including valve control cylinder model, shunt valve model and telescopic cylinder model, and the influence of each hydraulic element on the displacement of telescopic cylinder is analyzed. In chapter 4, the simulation results of single cylinder model, two-cylinder model and four-cylinder model are analyzed by AMESim software and ADAMS software, and the simulation results are compared with the theoretical analysis results. In the fifth chapter, the control situation of deck platform under different loads and different control methods are compared, the crawling phenomenon and its harm are introduced, and the corresponding solutions are put forward. In the sixth chapter, some works and their shortcomings are summarized, and the future research on the electro-hydraulic control system of telescopic cylinder platform is prospected.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137

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