毕业设计 基于LabVIEW的控制系统分析与设计.doc

毕 业 论 文 题 目：基于LabVIEW的控制系统分析与设计 摘要 现代科技的发展日新月异在工业自动化和测试及测量领域，传统仪器功能固定且由厂商定义，已经不能适应时代发展的需要。虚拟仪器（Virtual Instrument，VI）由用户定义，彻底打破了传统仪器由厂家定义，用户无法改变的局面，引起仪器和自动化工业的一场革命。虚拟仪器具有传统仪器的功能，又有灵活性，它能够充分利用和发挥现有计算机先进技术，使仪器的测试和测量及自动化工业的系统测试和监控变得异常方便和快捷。Laboratory?Virtual?Instrument?Engineering?Workbench实验室虚拟仪器工程平台关键词： Abstract Traditional measurements and controllers’ function are defined by manufacturers, and it is hard for users to make any changes. With the rapid development of the modern technology, Virtual Instrument (VI for short) comes to application. Its function could be defined by users instead of manufacturers, more revolutionarily, it use software to realize hard-instrument’ function. Compare to traditional measurements, using Virtual Instruments is much more convenience. In virtue of computer science, Virtual Instrument is more and more popular in the industry application. LabVIEW (Laboratory Virtual Instrument Engineering Workbench) is a topping VI software. It has strong points such as outstanding man-machine interface, powerful data acquisition and graphical programming language, etc. On account of these good qualities, it is gaining an increasing number of engineers’ recognition. Based on the LabVIEW control design toolkit and simulation module, how to perform the control system design and simulation on the LabVIEW platform was discussed. Firstly, give a brief introduction of Virtual Instrument and LabVIEW; Then, discuss the developing and analyzing a mathematical model of the plant; Afterwards, discuss designing the controller, the emphasis is the method of tuning the PID controller ’ s parameters; At last, perform the dynamic system simulation, including the off-line simulation and on-line simulation. Key words: Virtual Instrument, LabVIEW, Control System Model, PID Control, Open-Loop System Analyze, Auto-adjusting, System Simulation 目 录 第一章 绪论 6 1.1 课题研究的背景、意义和目的 6 1.2 国内外研究现状 6 1.3 本论文的研究内容 7 第二章 LabVIEW应用基础 8 2.1 虚拟仪器概述 8 2.1.1 虚拟仪器的概念 8 2.1.2