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1、高级控制理论及应用ResearchOnTemperatureControlbasedOnFuzzy-PIDAlgorithm组员姓名张艺潇学号10120272任课教师宋永端提交日期2011年5月13日ABSTRACTABSTRACT:Withthedevelopmentofindustry,electricheatingfurnaceismoreandmorewidelyused.Temperatureisanimportantparameterofelectricheatingfurnace,andthedemandoftemperatu
2、recontrolisincreasing.Thetraditionalcontrolmethodusuallybaseonaprecisemathematicalmodel,fortheelectricheatingfurnacecontrolsystemwiththecharacteristicofdifficulttoestablishaprecisemathematicalmodel.Fromthedevelopmentofthetemperaturecontrolsystem,tothetemperature,therearema
3、nycontrolmethodtobeselected.ThefirstisPIDcontrolmethod,itissimpleandeasilyrealized.Ithastheadvantagetoeliminatethesteady-stateerror,butbecauseoftheconflictbetweenquicknessandthesmallovershoot,itcan’tmeetcontroldemand.Thenextisfuzzymethod.Ithastheadvantageofsmallovershoot,b
4、utitcan’tmeetcontroldemand.Thelastoneisfuzzy-PIDcontrolmethodwhoseparametersareadjustedbyfuzzycontrolrules.Itcangetgoodresultthatitcanmaketheregulatingtimeshort,theovershootzeroandthesteady-stateerrorverylittlecanbeobtained.Thispaperproposesamethodofelectricheatingfurnacec
5、ontrolsystembasingonfuzzy-PIDcontrol,andacomparisonoftheefficiencybetweenfuzzyPIDandConventionalPIDismadeaccordingtotheresultofsimulation.KEYWORDS:TemperatureControl;PIDControl;Fuzzy-PIDControl1.IntroductionOvertheyears,researchershavecontinuedtouseavarietyofnewmethodsandn
6、ewtechnologiestocontrolthetemperatureoftheelectricheatingfurnace,andgetalotofexperienceandsomeresults.Therapiddevelopmentofcomputerandintelligentcontroltheorymakestemperaturecontrolintoadigital,intelligentnewera[1].Inrecentyears,PIDControl,GeneticAlgorithm,NeuralNetwork,Fu
7、zzyControlandFuzzyControlcombinedwithNeuralNetworkareusedinthisfield.(1)PIDControlPIDControlisthemostsimpleandpracticalcontrolmethod,isoneoftheearliestdevelopedcontrolstrategy,whichhasPIDControlhascharacteristicsofsimplestructure,excellentrobustness,goodstability,etc[2].Th
8、erefore,sincethefortiesof19century,PIDcontrolisstillwidelyusedinindustrialprocess.Tempera
