智能液位控制系统仿真研究.doc

内蒙古科技大学毕业设计说明书（毕业论文）题目：智能液位控制系统仿真研究智能液位控制系统仿真研究摘要随着工业的发展,液位控制在各种过程控制中的应用越来越广泛,为保证生产过程的安全,效益等对液位控制的精确要求,传统PID控制和模糊控制在液位控制中都有应用。根据不同情况下对液位控制的要求,选择最适合的控制方法,本文以单容、双容水箱的液位控制模型为研究对象,将传统的PID控制和模糊控制进行比较,观察到传统PID控制措施简便,但超调量大,趋于稳定状态所需时间长;模糊控制超调量小,趋于稳定状态所需时间短,但设置模糊控制规则所需时间长,模糊控制鲁棒性强。本文介绍了PI控制和模糊控制在单容水箱、双容水箱液位控制系统中的应用。首先介绍了P,I,D控制、模糊控制以及模糊控制的基本原理,建立了双容水箱液位控制系统数学模型,然后利用MATLAB/Simulink工具对控制对象进行了跟踪设定值、适应对象参数变化和抗扰动特性方面的仿真研究。仿真结果表明模糊控制算法与常规算法相比具有鲁棒性强和动态性能好等特点,该控制方法对于双容水箱系统控制是有效的。关键词：单容水箱系统；双容水箱系统；P,I,D控制；模糊控制；仿真。IntelligentControlSystemofLevelSimulationStudyAbstractWithindustrialdevelopment,levelcontrolinavarietyofprocessapplicationscontrolmoreandmorewidely.Inordertoensurethesafetyoftheproductionprocess,effectivenessoftheprecisionofliquidlevelcontrolrequirements,traditionalPIDcontrolandfuzzycontrolintheliquidlevelcontrolapplicationsinboth.casesaccordingtodifferentrequirementsoflevelcontrol,choosingthemostappropriatecontrolmethod,Inthispaper,aone-tanker、Two-tankerwatertanklevelcontrolmodelisStudy,traditionalPIDcontrolandfuzzycontroltocompareobservedthatthetraditionofsimplePIDcontrolmeasuresisSimple,However,overshootislarge,Thetimerequiredforstabilizingthestateislong;Fuzzycontrolofamountofovershootissmall,Thetimerequiredforstabilizingthestateisshort,However,fuzzycontrolrulerequireforalongtime,fuzzycontrolRobustnessisstrong.ThisessayintroducestheapplicationonfuzzycontrolandPIcontrolinone-tankandtwo-tankwaterlevelsystem.Firstly,P,I,Dcontrol,fuzzycontrolandthebasicprinciplesoffuzzycontrolandPIDcontrolareintroducedandthemathmeticmodeloftwo-tankwaterlevelcontrolsystemissetup.AndthenthecontrolsystemissetupbasedonMATLAB/Simulink..Afterthat,capabilitiesoffollowingset-Point,restrainingdisturbsandfittingchangesonProcessmodelarestudiedbysimulationinordertoshowtheircharacteristicandapplicability.TheresultsofsimulationshowthatthefuzzyPIDcontrollerhasimproveddynamicandstaticperformanceofcontrolsystemandhasobtainedgoodcontrolquality.Thatistosay,thiscontrolmethodiseffeetiveonsystemssu