《2D数字溢流阀的设计及仿真》-毕业论文.doc

PAGE 浙江工业大学毕业论文 0 本科毕业设计(论文) 题目：2D数字溢流阀的设计及仿真分析 2D数字溢流阀的设计及仿真分析 学生姓名：xxxxx 指导教师：xxxxxxxxx 摘 要 溢流阀是任何一个液压传动系统必须使用的重要压力控制组件，在液压设备中主要起定压溢流和安全保护作用。为了提高溢流阀的稳态精度和动态稳定性，科研人员一方面从溢流阀的结构上进行改进，另一面从液压控制原理上加以创新。 本研究课题拟采用2D调压螺旋机构原理设计出一种2D数字溢流阀。先导阀采用双自由度的调压螺旋机构，这不但使先导阀的结构大大简化，同时对整个溢流阀的性能也有了很大的提高。本研究先对2D数字溢流阀进行结构设计，再在建立了2D数字溢流阀动态和静态的数学模型后，利用MATLAB对其进行数字化仿真，从而得到2D数字溢流阀的特性曲线，并且对影响特性的结构参数和工作参数进行详细的讨论。 关键词：2D数字溢流阀 结构设计 动态特性 静态特性 性能仿真分析 DESIGN AND SIMULATION OF 2D DIGITAL RELIEF VAVLE Student:Xuyi Lin Advisor:Dr.Jian Ruan Lecturer Faming Zhu College of Engineering Zhejiang University of Technology TOC \o 1-3 \h \z \u Abstract Relief valve is an important pressure control component in hydraulic drive system. Its main functions are adjusting and stabilizing the hydraulic system maximum pressure and preventing overload, ensuring the pressure safety. In order to improve the steady-state accuracy and dynamic stability of relief valve, the structure of relief valve was improved on the one hand and the hydraulic control method was innovated on the other hand. In this paper, a 2D adjusting pressure spiral was adopted to design a new digital relief valve. Piloted valve of 2D digital relief valve is designed with two motions of a single spool. It not only makes the construction of piloted valve simple, but also improves the performance of the relief valve. At the base of establishing dynamic and static mathematic models, the performance of it is numerically simulated with the help of MATLAB software. Structural and running parameters that influent the performance of the valve is deep discussed. Key words: 2D digital relief valve; structural design; dynamic performance; static performance; simulation 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc264116820 摘 要 PAGEREF _Toc264116820 \h I HYPERLINK \l _Toc264116821 Abstract PAGEREF _Toc264116821 \h II HYPERLINK \l _Toc264116822 第一章 绪论 PAGEREF _Toc264116822 \h 1 HYPERLINK \l _Toc264116823 1.1 液压传动技术的发展 PAGEREF