文档介绍：学位论文的主要创新点本文针对原油输送提出了适合于非线性、纯滞后系统的温度控制方法一模糊一PID复合控制,该复合控制方法综合了模糊控制算法和PID控制算法各自的优点,与单纯采用这两种控制算法相比具有超调量小、调节时间快以及稳态误差小的优点。可以用于油田集散地对原油温度的稳定控制,实现了原油加热炉温度控制器的智能化与自动化。摘要近年来,随着自动控制技术水平的不断提高,企业对加热炉自动控制系统的精度要求也越来越高。加热炉温度控制系统作为原油集送设备中的重要部分,对原油的后续传输起到了关键性的作用。从技术角度来讲,方案的可行性以及自动控制能力是系统的关键所在,企业生产的重中之重是系统能够稳定、安全的运行。本论文以大港油田公司的原油加热炉项目为背景,在充分分析原油加热炉结构及其工作过程的基础上,提出了本系统的总体控制方案。本系统采用SIEMENS 公司PLC ,实现对原油出口温度信号的采集与控制。根据加热炉温度变化的特点,在分析比较PID控制、模糊控制的原理和优缺点基础上, ,并且在MATLAB环境中进行了仿真验证。利用 PLC开发工具SIMATIC STEP 。最后通过搭建测试平台,对原油加热炉温度控制系统的性能指标进行了实验室测试。测试结果表明,原油出口温度在15 s时进入稳定状态并且一直保持在设定值700C附近,进入稳态后的温度误差保持在±2e范围内,系统的超调量为 100C,达到了设计要求,实现对原油温度的稳定控制。关键词:加热炉;温度控制;PID控制;模糊控制;PLC Abstract Inrecent years,with thedevelopment oftechnology inautomatic control,the accuracy requirement of heating furnace isalso getting higher and higher for control system equipment is allimportant part in crude oil gathering and sending syetem,which plays akey roleinthefollow—up transmission of crude theview oftechnical point,the feasibility and automatic control capability is themost important thathow to ensure thesystem to run stably madsafely. Crude oilheater stoveproject provided thebackdrop for thethesisinDagang dissertationdesignessystem control scheme based on the work process and structureofcrude oilheater system takesSIEMENS PLC$7-400 ascontroller which collectsand controlscrude oilexport temperature. According to the temperature’S characteristics,the dissertationputs forward Fuzzy-pound control algorithm based parison ofPID controland fuzzy control’Sprinciple,advantages control strategiesare simulated InMATLAB/Simulink thesis designes software in SIM忪TIC STEP . Finally,The dissertation testsperformance indicators ofcrude oilfumace temperature control system through constructing testplatform experimental result,thesystem enters intogeady state at 5 Jand remains ne