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1、AbstractAbstractSuchaspetrochemical,metallurgy,electricpower,nuclearpowerindustry'srapiddevelopment,peopleincreasinglyurgentrequirementforpneumaticcontrolvalveofthesmartcontrolofthecontrolvalvequalityputforwardhigherrequirements.Smartvalvepositioneristhebrainofapneumaticcontrolvalve,f
2、orthewholeoftheregulatorfunctionmayplayadecisiverole,theperformanceofthecontrolsystem.Inrecentyears,countriesaroundtheworldareracingtostudyFISHER,SIEMENS,SAMSONcompanyhassuccessivelyintroducedanewgenerationofsmartfaultdiagnosisfunctionofthesmartvalvepositioner,domesticbecausestartslat
3、e,thereisnothiskindofproduct,sothemarketiscompletelymonopoly,thehighpriceofimportedlocator.So,studydesigndomesticonlinediagnosissmartvalvepositionerisverybenecessary.Inthispaper,thesmartvalvepositioneronlinediagnosiswerestudied,themainworkincludes:(1)Intheresearchdesignonlinediagnosis
4、smartvalvepositioner,takingintofullconsiderationtheneedsofthedomesticmarketandthedomesticactualsituation,proposedthedesignaonlinediagnosisbasedonlowpowerconsumptionMCUsmartvalvepositioner.(2)4-20masignalinputpowerconsumptionduetothelimit,efficientDCDCpowersupplydesignmethodisproposed,
5、themethodimprovestheefficiencyofpowersupply,twowiresystemforonlinediagnosisofthedesignofthesmartvalvepositionerprovidesaguarantee.(3)Putforwardthefieldbuscommunicationfunctionofthedesignofthemodularapproach,themethodforonlinediagnosisoftheintelligentvalvepositioneronlinediagnosisfunct
6、ionprovidesthesupport.(4)Basedonpulseadjustablewidthcontrolmodeandswitch"five-stepmethod"isputforwardtheoptimizationofthelocatorspeedquantitativecontrolalgorithm,realizetheeasyswitchbetweenthealgorithm.(5)Mainlyaimsattheintegrationofthepressure,temperaturesensors,suchasapplications,th
7、evalvelimitworkingpositiondetectionandtransmission,thevalvestartingpointandendpoint,thecompensationfortheinitialmomentumafterrunningchange,theaboveparameters,effectivelyusedinthecontrolprocessofthemachine,toachievethepurposeofonlinediagnosis.Keywords:HighefficiencyDCDCpower;Modular;Op
8、timiz
