毕业设计（论文）-一种基于LABVIEWPID控制器的设计方法.doc

一种基于LABVIEW的PID控制器的设计方法摘　　要利用虚拟仪器技术,采用LABVIEW图形编程环境,设计了一个PID程序,用于仿真PID控制规律。PID控制器是一种线性的控制器，具有原理简单、易于整定、使用方便和控制性能较强的优点，它能够对线性控制系统快速准确的确定P、I、D三个参数和阶跃响应曲线。同时，可以给出控制系统开环或者闭环的阶跃响应。通过改变P、I、D参数和设定值，观察不同情况下的控制曲线，或在同样参数情况下比较位置型PID与增量型PID的控制效果。通过对各种控制器作用下，对线性控制对象，阶跃输入的响应曲线分析，从而得到各个阶跃响应特性。证明该控制器设计正确，实用技术方法可行。并总结出PID调整Kp，Ki，Kd参数的一般顺序。该控制器为各个领域的过程控制系统提供了方便，节省了时间，大大的提高了生产效率。关键词：虚拟仪器；LABVIEW；PID控制 Base on LABVIEW for PID controller design methodABSTRACTUsing the technology of virtual instrument, using LABVIEW graphical programming environment, to design a PID program, used to control law simulation PID.PID controller is a linear controller，which has such advantages as simple principles,easy setting,convenient application and strong control performance. It can quickly and exactly define three parameter-P、I、D-for linear control system below three orders,and accurately determine the step response curve of the open loop systems.At the same time,may give the control system split-ring or the closed loop step response.By changing the P, I, D parameters and the set value, observation and control curve under different conditions, the control effect or in the same parameters under the condition of comparative position PID and increment type PID. Through a variety of controller function, linear control object of the order of, response curves of step input, resulting in each step response characteristic. Results show that the controller design is correct, practical and feasible technical method. And summed up the PID Kp, Ki, the general order of Kd parameters.Along with the computer technology, has provided the outstanding solution for the process control and the industrial automation application.Key words：virtual instrument；LABVIEW；PID control 目　　录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc357909735 １　引言 PAGEREF _Toc357909735 \h 1 HYPERLINK \l _Toc357909736 1.1　课题研究的来源及意义 PAGEREF _Toc357909736 \h 1 HYPERLINK \l _Toc357909737 1.2　国内外发展状况 PAGEREF _Toc357909737 \h 1 HYPERLINK \l _Toc357