机电液实验台自动化改造设计.doc

机电液实验台自动化改造设计


 目录
摘要................................................................................................................................................I
英文摘要...........................................................................................................................................II
第一章 绪论.................................................................................................1
1.1 课题来源......................................................1
1.2 机电液综合实验台的发展现状...................................2
1.3 本课题的意义.................................................2
1.3.1 实验教学的意义 .........................................2
1.3.2 现实意义和实际价值......................................3
1.4 本课题研究的内容..............................................4
第二章 实验台液压系统的总体方案.....................................6
2.1概述..................................................6
2.1.1 液压子系统.................................................6
2.1.2 计算机辅助控制系统.........................................6
2.2 本实验台的技术要求............................................7
2.2.1 实验台的改造及预期目标 ....................................7
2.2.2 实验台组合方式............................................7
2.2.3 实验台的特点..............................................8
2.3 液压系统回路设计...............................................8
2.3.1 确定主要参数，编制动作表...................................8
2.3.2 拟定液压系统原理图.........................................9
第三章液压回路设计方案.............................................11
3.1 液压回路的整体设计...........................................11
3.2 液压实验原理说明.............................................11
3.2.1 液压泵的性能特性试验......................................12
3.2.2 节流调速性能特性实验......................................13
第四章 液压系统硬件部分的设计......................................16
4.1 液压控制元件的选型............................................16
4.1.1 本实验台液压系统的性能参数...............................16
4.1.2 液压元件的选取...........................................16
4.2 底板的设计及说明.............................................19
第五章 控制部分.....................................................21
5.1 试验台的控制..................................................21
5.2 系统设计......................................................22
5.3 改造后的测试功能...............................................23
第六章 总结与展望...................................................28
6.1 总结..........................................................28
6.1.1 液压回路设计的关键........................................28
6.1.2 液压回路设计中存在的问题..................................28
6.1.3 改造后的创新之处..........................................28
6.2 技术展望......................................................29
致 谢...............................................................30
参 考 文 献.........................................................31
附录.......................................................32

摘要
液压技术已广泛的应用于国民生产的各个环节，液压元件、组件和系统性能的高低直接影响机器的质量，对元件、组件和系统的性能参数进行测试分析，以满足各种用途的需要，就成为不可缺少的重要环节。随着计算机软硬件技术和计算机辅助测试技术的发展，特别是虚拟仪器技术的出现，为开发通用的液压元件计算机辅助测试系统提供了便利条件。因此，将测试领域中的最新技术— 虚拟仪器技术应用于液压元件及系统性能的自动测试中，以提高测试的效率和精度，对于液压元件和系统的研发以及液压产品的推广应用具有重要作用。
为适应电液比例控制技术教学和科研的需要，我们进行了实验室的机电液实验台自动化改造。本文论述对机电液综合实验台液压测试回路的整合改造，提高了原实验台的技术性能，研制出一种多功能模块化的、先进的、可靠的液压泵、液压阀计算机辅助测试试验系统，能够自动按预先设定好的程序完成对各种泵、阀的性能测试。

关键词:多功能液压试验台 比例溢流阀 计算机辅助测试

 
Abstract
The technology of hydraulicp ressureh as been wdely used in every part of National Product. The performance of hydraulic component and hydraulic circuit can influence the quality of machine directly. So it is important to test and analyze the performance index of hydraulic component and circuit, in order to meet the needs of different purpose.The development of technology of computer software and hardware as well as the development of CAT (Computer Aided Test), especially the appearance of VI (Visual Instrument), provides convenience to develop multifunctional CAT system of hydraulic components.Thus,the study on CAT system based on the most new test technology of VI, may play a very important role in research of new hydraulic components and systems,also in extending application of hydraulic products.
In order to meet the needs of instruction and scientific research,we decided to develop to Automation of electro-hydraulic test-bed. This article discusses the electro-hydraulic integrated circuit of hydraulic test of the integration and enhance the original test-bed of technical performance, the development of a multi-functional modular, advanced and reliable hydraulic pumps,hydraulic valve computer-aided test Test System, can automatically at a pre-configured procedures of the various pumps, valves of the performance test.