基于磁流变液的插装式高速开关阀研究

发布时间：2017-12-30 21:04

本文关键词：基于磁流变液的插装式高速开关阀研究　出处：《昆明理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：高速开关阀作为液压控制技术中一个重要部分,其性能好坏将直接影响到液压控制系统的整体性能。随着液压控制技术在工程机械中的不断发展,液压控制技术对高速开关阀提出了智能化、大流量、高响应速度等技术要求,传统的高速开关阀不能实现智能化控制,也不能解决大流量和高响应速度间矛盾,显然不能满足上述要求。磁流变技术是一种基于磁流变液磁流变效应发展起来的新型控制技术,具有智能、低能耗、高效率、高稳定性等优点,可应用在机械、汽车等众多领域上。本文利用磁流变液磁流变机理设计一种磁流变高速开关阀实现液压控制领域中智能化和自动化控制,并在此基础上,对磁流变高速开关阀进行插装式设计,以满足高速开关阀的大流量、高响应速度等技术要求。本文概述了磁流变技术及高速开关阀的国内外研究现状,介绍了磁流变液的组成、三种工作模式、磁流变微观机理、性能影响因素及制备方法。利用ansys有限元分析软件对不同相对位置工作间隙的磁流变高速开关阀及单双线圈磁流变高速开关阀进行了磁场分析比较,分析表明了工作间隙内置及具有双线圈结构的磁流变高速开关阀在工作间隙处的磁感应强度较优。针对磁流变高速开关阀的在设计过程中面临的关键技术问题,通过对阀材料选择,电磁线圈、工作间隙、阀体、阀芯内径设计等步骤完成了磁流变高速开关阀的设计。为解决磁流变高速开关阀高响应速度和大流量间的矛盾,采用二级控制方式,磁流变高速开关阀为先导级,二通插装式锥阀作为主阀进行二级液压放大,设计出一种磁流变插装式高速开关阀。最后利用Matlab/Simulink软件建立磁流变插装式高速开关阀的仿真模型,并进行动态仿真分析及流量特性分析,结果表明设计的磁流变插装式高速开关阀性能满足设计要求。
[Abstract]:As an important part of hydraulic control technology, the performance of high speed switch valve will directly affect the overall performance of hydraulic control system. With the development of hydraulic control technology in construction machinery. Hydraulic control technology has put forward intelligent, large flow, high response speed and other technical requirements for the high speed switch valve. The traditional high speed switch valve can not achieve intelligent control, nor can it solve the contradiction between large flow rate and high response speed. It is clear that the above requirements cannot be met. Magnetorheological technology is a new control technology based on the magnetorheological effect. It has the advantages of intelligence, low energy consumption, high efficiency and high stability. It can be used in machinery. In many fields, such as automobile, this paper designs a kind of magnetorheological high speed switch valve to realize intelligent and automatic control in hydraulic control field by using magneto-rheological fluid magnetorheological mechanism, and on this basis. The magnetorheological high speed switch valve is designed to meet the requirements of high flow rate and high response speed. In this paper, the research status of magnetorheological technology and high speed switch valve at home and abroad is summarized, and the composition, three working modes and micro mechanism of MRF are introduced. Ansys finite element analysis software was used to analyze and compare the magnetic field of the high speed magnetorheological valve with different working gap and the single and double coil MRF high speed switch valve. The analysis shows that the magnetic induction intensity of the magnetorheological high speed switch valve with double coil structure and built-in working gap is better. The key technical problems in the design process of the high speed magnetorheological valve are pointed out. Through valve material selection, electromagnetic coil, working gap, valve body. In order to solve the contradiction between high response speed and large flow rate of MRF high speed switch valve, a two stage control method is adopted. The magneto-rheological high speed switch valve is the pilot stage, and the two-way insert cone valve is used as the main valve for secondary hydraulic amplification. A magneto-rheological plugging high speed switch valve is designed. Finally, the simulation model of the magnetorheological plug high speed switch valve is established by using Matlab/Simulink software. The dynamic simulation and flow characteristic analysis are carried out. The results show that the performance of the magnetorheological plugged high speed switch valve meets the design requirements.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH134

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