试验机嵌入式测控系统的研究

【作者】 吕迅；

【导师】 李世伦；

【作者基本信息】 浙江大学 ， 机械电子工程， 2003， 硕士

【摘要】 串级控制系统是一种在工业控制中被广泛使用的控制方法。本文在分析了串级控制系统的基础上，着重叙述了嵌入式测控系统在试验机上的应用。文章的主要内容如下：第一章 说明了试验机的应用背景及现状，从而提出了用嵌入式系统对试验机的测控。第二章 研制了带阀芯位移的电液比例阀。分析试验机系统各部分的组成及工作原理，并且对各部分的动态响应进行了理论分析。从而提出了主环采用PID校正、副环采用P控制的串级控制方法。第三章 说明了试验机测控系统各器件的选用，以及它们的原理图。分析了布线时对系统的干扰源及解决办法。第四章 在完成了相关的硬件电路设计后，本章主要论述了用KEIL C51语言在嵌入式测控系统上的编程，实现试验机等加载速率测试的要求。第五章 本章讨论了嵌入式测控系统与上位机的通讯，定义了通讯协议。以及在嵌入式系统和上位机上通讯程序的开发。第六章 本章叙述了对试验机测控系统软硬件上的调试，以及对主副回路参数的整定，最后分析了试验结果。第七章 对以上所做的研究工作进行总结，提出不足点，以及将来的改进。本论文的特点是注重实用性，将工作机理与具体实现结合起来，用廉价的嵌入式系统实现对试验机的控制。更多还原

【Abstract】 Cascade control system is a common control system and is used in control process widely. Based on the comprehension of the conventional cascade control system, Embedded test control system application at the testing machine are researched in this paper, the content of this paper is:Chapter 1 Narrates the application background and current situation of the testingmachine system. Then puts forward the application of the embeddedsystem at the testing machines system. Chapter 2 Analyses the composition of every parts of the testing machine and itsoperation principle, and analyses the dynamic responses of themtheoretically. Put forwards the method which use PID in main loop and Pin subloop. Chapter 3 Narrates the selection of all parts of the test and control system of thetesting machines and their schematic diagram. Analyses the interferencesource and solution to the system while routing. Chapter 4 Mainly discusses programming with KEIL C51 at embedded systemafter accomplishing of hardware. This method meets the requirement ofconstant loading speed. Chapter 5 This chapter discusses the communication between the embedded systemand PC. And defined the protocol. Develop the communicationprocedure of the embedded system and PC. Chapter 6 This chapter discusses the debugging on the software and hardware ofthe testing machines system. Adjust the parameter of two loops.Analyzed the result of the test at last. Chapter 7 Summarizes what have done in the project development, and putsforward some deficient. And the improvement in the future.This paper’s characteristic is paying attention to practicability, uniting the theory and practice into integrity. Realize the control on the testing machine with the low-priced embedded system.更多还原