液压伺服拉力试验机设计+CAD图纸
毕业论文关键词： 液压伺服；拉力试验机；测量装置
Hydraulic Servo Tensile Testing Machine Design
Abstract: Hydraulic servo tensile testing machine is mainly composed of mechanical parts, data acquisition, servo drive parts, data processing, etc, with the development of science and technology, mechanical tensile testing machine, tensile testing machine has experienced the electro-hydraulic servo type tensile testing machine, electronic micro control type tensile testing machine three main stages. Tensile testing machine abroad after one hundred years of development, the control of the tension tester, measure and record system, widely used in the electronic technology, computer technology, make the whole of the tensile testing machine performance is greatly improved. As well as the increasing development of the tensile testing machine, tensile testing machine accessories and auxiliary equipment are also constantly updated development, such as high temperature heating equipment, refrigeration equipment, high and low temperature fixture at low temperature, high low temperature, large deformation tracking extensometer measurement device and pneumatic and hydraulic power system and so on. Tensile testing machine test from load-deformation test to test the content of the micro cracks contain samples of mechanical properties, through the tensile testing machine tensile process reveal the sample internal micro cracks develop, expand, until the sample fracture process, through the industrial CT technology, photoelectric technology, the integrated use of computer technology and other high-tech, make from macro to micro tensile testing machine application and research.
Key Words: hydraulic servo; tensile testing machine；measuring device
目录
1 绪论 1
1.1 课题研究背景、目的及意义 1
1.2 课题国内外研究现状及趋势 1
2 方案论证 4
2.1 研究内容 4
2.2 设计思想及设计方案 4
2.3 控制系统 5
2.3.1可编程控制器（PLC） 5
2.3.2 单片机 5
2.4 液压伺服阀的分类及特点 5
2.4.1 滑阀式伺服阀： 5
2.4.2 喷嘴挡板式伺服阀： 6
2.4.3 射流管式伺服阀： 6
2.5 设计难点 6
3 电液伺服阀 8
3.1电液伺服阀概述 8
3.1.1 电液伺服阀的结构组成 8
3.1.2 电液伺服阀的分类 9
3.2 伺服阀的工作原理 9
3.2.1 力反馈式电液伺服阀 9
3.2.2 位置反馈式伺服阀 10
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