《控制工程基础》第1章 控制工程简介 第2章 系统的数学模型-英文教学课件（非AI生成）.ppt

FundamentalsofControlEngineering1

Ch1IntroductiontoControlsystem1）BasicConceptofControlSystem2）HistoryandDevelopmentofAutomaticControl3）ThePrincipleofFeedbackControl4）BasicFormsofControlSystem5）BasicComponentsofClosed-loopsystem2

6）BasicRequirements(Performance)7）ClassificationofControlSystem8）ExamplesofModernControlSystem3

1.1BasicConceptofControlSystemAControlSystemisaninterconnectionofcomponentsformingasystemconfigurationthatwillprovideadesiredsystemresponse.Thebasisforsystemanalysisanddesignislinearsystemtheory.Processorplanttobecontrolledcanberepresentedasshown:processinputoutput4

Open-loopControlSystemAnopen-loopControlSystemutilizesanactuatingdevicetocontroltheprocessdirectlywithoutusingfeedback,asshowninthefollowingFigure.5

Closed-loopControlSystemAclosed-loopcontrolsystemusesameasurementoftheoutputandfeedbackofthissignaltocompareitwiththedesiredoutput(referenceorcommand),asshowninthefollowingFigure.6

1.2HistoryandDevelopmentofAutomaticControl

Theuseoffeedbacktocontrolasystemhashadafascinatinghistory,thefirstapplicationsoffeedbackcontrolappearedinthedevelopmentoffloatregulatormechanismandwaterclock.7

8

1)JamesWatt’sflyballgovernorin17692)J.C.MaxwellformulatesamathematicalmodelforagovernorcontrolofsteamEngine3)HenryFord’sassemblylineforautomobileproductionin19134)H.W.BodeanalyzesfeedbackamplifiersatBellTelephoneLabin1927SelectedHistoricalDevelopmentofAutomaticControl9

5)auto-pilots,gun-positioningsystems,radarantennacontrolsystemandothermilitarysystemsinWorldWarII6)State-variablemodelsandoptimalcontroldevelopedin1960-1970(spaceage)7)Robustcontrolwidelystudiedin19808)Intelligentcontrol10

1)cybernetics2)classiccontrolmoderncontrolcomplexsystemcontrolTransferfunction,SISOlinearsystem