基于MATLABPID控制器设计

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基于MATLAB的PID控制器设计

摘要

本论文以温度控制系统为研究对象设计一个PID控制器。PID控制是迄今为止最通用的控制方法大多数反馈回路用该方法或其较小的变形来控制。PID控制

(至今

在全世界过程控制中用的84%仍是纯PID90%)。在PID

PID

的MATLAB仿真系统。本设计就是借助此软件主要运用Relay-feedback法线上综合法和系统辨识法来研究PID

关键词：PID参数整定

,随着计算机技术的迅速

PID控制

器并通过MATLAB中的虚拟示波器观察系统完善后在阶跃信号下的输出波形。

PID控制器

MATLAB

Design of PID Controller based on

MATLAB

Abstract

This paper regards temperature control system as the research object to design a pid controller. Pid control is the most common control method up until now; the great majority feedback loop is controlled by this method or its small deformation. Pid controller (claim regulator also) and its second generation so become the most common controllers in the industry process control (so far, about 84% of the controller being used is the pure pid controller, it’ll exceed 90% if the second generation included). Pid parameter setting is most important in pid controller designing, and with the rapid development of the computer technology, it mostly recurs to some advanced software, for example, mat lab simulation software widely used now. this design is to apply that soft mainly use Relay feedback law and synthetic method on the line to study pid controller design method, design a pid controller of temperature control system and observe the output waveform while input step signal through virtual oscilloscope after system completed.

Keywords: PID parameter setting

PID controller MATLAB simulation

cooling machine

摘要.....................................................................................................................................I ABSTRACT ................................................................................................................................

.....

第1章绪

论 ........................................................................................................................... 1 1.1 课

题来源及PID控制简介...................................................................................................... 1

1.1.1

课

题

的

来

源

和

意

义 .................................................................................................................. 1

1.1.2 PID控制简介 ................................................................................................................... 1

1.2 国内外研究现状及MATLAB简

介 .................................................................................... 3

第2章控制系统及PI调节...........................................................................................

5 2.1

控制系统构

成 ............................................................................................................................ 5

2.2 PID控制 ...................................................................................................................................

5 2.2.1

比

例

、

积

分

、

微

分 .............................................................................................................. 6

2.2.2

PID

控

制 .............................................................................................................................. 6

第3章系统辨识 .....................................................................................................................

3.1 3.2 3.3

系

系统

系

统辨

统

特识

辨性方

识..................................................................................................................... 7 图 ............................................................................................................. 10 法.............................................................................................................................11

第4章 PID三参数变化对系统的影响......................................................................

4.1 比例

控制的影