《单线圈磁流变阀结构设计》-毕业论文（设计）.doc

摘要 单线圈磁流变阀结构设计 摘 要 传统液压控制元件存在响应时间慢、可靠性差、结构复杂等缺点。磁流变液作为一种智能流体，可在毫秒级的时间内实现液-固之间的转换，并且这种转换可逆、可控。利用磁流变液体这一特性，设计了一种新型磁流变流体控制元件，即单线圈磁流变阀。介绍了该阀的结构特点及工作原理、对其进行了磁场仿真、同时对其压降进行了分析。 本文的主要研究工作包括： 1. 提出并实现了具有圆环阻尼间隙的单线圈磁流变阀的原理与结构。研究了磁流变阀的结构特色、材料选择以及磁路设计与计算。 2．利用有限元软件Ansoft Maxwell 14，对本文提出并实现的阻尼间隙的单线圈磁流变阀的磁路进行了仿真，结果验证了磁流变阀结构的合理性与磁路的合理性。 3．对磁流变阀变化的影响因素进行了压降分析，分析了压力、流量与磁流变阀结构之间的关系。 关键词：单线圈磁流变阀；磁流变液；圆环阻尼间隙；压降 Design of maganetorheological valve with single coil ABSTRACT Traditional hydraulic control unit exists many disadvantages such as low response time, bad reliability, complex structure, etc . Magnetorheo logical fluid, as a intellectual fluid, can transform from liquid state t o solid state in several millisecond . The transform is controllable and reversible . Using the characteristic of magnetorheo logical fluid, a new kind of MR fluid control unit, MR servo valve was designed . Its structure characteristics and work principle were introduced . The major research works completed in this dissertation include: 1. The principles and structures of both the MR valve with annular damping gaps are proposed and realized. The characteristics, the material selections, and the design and calculation of the magnetic circuits of the newly proposed MR valves are also explored. 2. The magnetic circuits of the proposed gaps are simulated using Ansoft Maxwell 14. The rationality of the structures and the magnetic circuits of both MR valves are validated by the simulation results. 3. The mathematical models are established on the basis of the structural design and magnetic circuit simulation. Keywords：magnetorheological valve；Magetorheological fluid；annular damping gap；pressure drop 目 录TOC \o 1-3 \h \u HYPERLINK \l _Toc8410 第一章 绪 论 PAGEREF _Toc8410 6 HYPERLINK \l _Toc6099 1.1 课题研究的目的和意义 PAGEREF _Toc6099 6 HYPERLINK \l _Toc19319 1.2 磁流变液的组成和特性 PAGEREF _Toc19319 7 HYPERLINK \l _Toc1232 1.3 磁流变阀国内外研究现状 PAGEREF _Toc1232 8 HYPERLINK \l _Toc16939 1.4 本文的研究内容 PAGEREF _Toc16939 9 HY