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外文翻译Theliquidlevelcontrolsystembasedondde\matlab\simulinkProcesscontrolisanimportantapplicationfieldofautomatictechnology,itistopointtothelevel,temperature,flowcontrolprocessvariables,suchasinmetallurgy,machinery,chemical,electricpower,etccanbewidelyused.Especiallyliquidlevelcontroltechnologyinreallife,playedanimportantroleinproduction,forexample,thewatersupply,civilwatertoweriflowwaterlevels,canaffectpeople'slivesinwater;Industrialenterpriseswithwater,ifthedrainagewaterdrainageorcontrolledproperlyornot,inrelationtotheworkshopofcondition;Boilerdrum,ifthecontrollevelboileristoolow,canmakelevelboileroverheating,possibleaccident;Jingflow,liquidlevelcontroltowercontrolaccuracyandlevelofthecraftcaninfluencethequalityoftheproductsandthecost,etc.Intheseproductionfield,arebasicallylaborstrengthortheoperationhascertainrisknatureofwork,extremelypronetoaccidentscausedbyoperatingerror,thelosses,killingmanufacturer.Visible,inactualproduction,liquidlevelcontrolaccuracyandcontroleffectsdirectlyaffectthefactoryproductioncostandeconomicbenefitofsafetycoefficient.EvenequipmentSo,inordertoensuresafety,convenientoperation,youhavetoresearchthedevelopmentofadvancedlevelcontrolmethodsandstrategies.Thegraduationdesigntopicistheliquidlevelcontrolsystembasedondde\matlab\simulink\forcecontrol,Amongthemwascontrolledobjectfortanklevel,CommunicationmodeforDDEcommunications,Matlabismainlyusedinthesimulationtest,Andforcecontrolsoftwareusedformodeling,Thissystemmainlythroughcombinationofhardwareandsoftwaredevicetoachieveprecisecontrolofliquidlevel,Inmodernindustrylevelcontrolofimportantcomponent,itinfluenceuponproductionnotallowtoignore,inordertoensuresafetyinproductionandtheproductqualityandquantity,thelevelandperformeffectivecontrolisverynecessary,Thefollowingisadescriptionofallaspects：一PIDcontrollerAproportional–integral–derivativecontroller(PIDcontroller)isageneric.controlloopfeedbackmechanismwidelyusedinindustrialcontrolsystems.APIDcontrollerattemptstocorrecttheerrorbetweenameasuredproce
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