张紧器弹性测试的发展现状与趋势毕业论文设计.doc

(此文档为word格式，下载后您可任意编辑修改！) 摘　要 本文主要针对如何对汽车张紧器进行性能检测做了研究。随着PLC的出现及发展，PLC的应用越来越广泛，具有广阔的应用前景。本文提出了用PLC技术设计汽车张紧器静态试验机的系统的整体方案。 在这篇论文中结合张紧器系统工作的实际情况，应用PLC技术设计一个张紧器的静态试验机来检测张紧器中的柱塞弹簧的承载能力。主要完成了以下几个方面的工作： 首先对张紧器的工作原理进行了解，然后完成了张紧器静态试验系统的整体设计。在正确的器件选型及软硬件设计的基础上，完成了张紧器性能检测静态试验的各子系统工作研究。 张紧器性能检测的静态试验分为两个，一是检测塞柱弹出一定距离时的最大冲力和稳定后弹力；二是检测弹簧被压缩一定距离后产生的形变。本文以这两个试验内容为基础，应用PLC技术完成对张紧器静态性能检测的静态试验机的设计。 关键词：张紧器，试验机，柱塞弹簧，系统设计 Abstract This article focused on how the auto tensioner for performance testing. With the appearance and the development, the PLC application is more and more widespread, which has the broad application prospect. This paper presents the overall program PLC technical design about auto tensioner static testing machine system. This tensioner system to the actual situation, using PLC technology to design a tensioner in static testing machine to detect the tensioner plunger spring load capacity .This article has mainly completed following work: First, to understand the working principle of the tensioner, and then complete the overall design of the static test of the tensioner system. On the basis of the correct selection of devices and hardware and software design, complete tensioner performance testing study on the static testing of the subsystem. There are two tensioner performance tests of the static test .One is to test the plug column pop-up of the largest momentum and stability in elastic when a certain distance. The other test is to deformation detection of the spring compressed to a certain distance. In this paper based on these two test content, applications PLC technology to complete the design of the static test of the static performance testing of the tensioner. Key Words：tensioner，Testing machine，Plunger spring，System design 目 录 1 绪论 1 1.1 张紧器性能测试的发展现状与趋势 1 1.2 PLC在控制系统中应用现状与发展 2 1.3 系统主要研究内容 4 2 PLC控制张紧器的系统整体设计 6 2.1张紧器系统结构设计与工作原理 6 2.1.1 张紧器工作原理 6 2.1.2 张紧器静态试验系统结构设计 7 2.2 系统各部分实现方案 9 2.3 系统设计的主要器件选择 10 2.3.1 PLC的选型 10 2.3.2 称重传感器的选择 12 2.3.3 光栅尺的选择 14 2.3.