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1、外文资料翻译WaterTowerWaterLevelControlSystemResearchAndDesignAbstract:ThewatertowerisawaterlevelcontrolsystemforresidentialquartersofChina'sextensiveuseofthewatersupplysystem,theexistenceofthetraditionalcontrolmethodstocontroltheaccuracyofthelowpowerconsumptionoftheshortcomingsoflarge,research-basedPLC
2、controlledmulti-pumpcyclefrequencyconstantpressurewatersupplysystem,usingprogrammablelogiccontroller,inverter,aswellasdevicessuchaspressuretransmitter,completelogiccontrol,speedcontrolanddatasamplingfrequencyandotherfunctions,allowingthesystemtoachieveautomaticcontrol,toachievethepurposeofenergyco
3、nservation,improvethequalityofthewatersupplysystem.Keywords:PLC,inverter,constantpressurewatersupply0IntroductionWatertowerwaterlevelcontrolsystemisthewideruseofresidentialquartersofChina'swatersupplysystem,watersupplysystemsinmostofthetraditionaluseofwatertowers,watertanks,orhighpressuretankpress
4、urizationequipmenttopumpwaterhigherthantheactualheightoftheheadto"upgrade"ofwater,thetheresultofincreasedwaterpumpshaftpowerandenergyconsumption.Researchanddesignofthetowersisthewaterlevelcontrolsystemusesa[1]constantpressurewatersupplysystem,steplessspeedpumps.Automaticallybasedonchangesinwater-c
5、onditioningsystemoperatingparameterstomaintainaconstantpressuretomeetthewaterrequirementsoftoday'sadvanced,energy-savingandreasonablewatersupplysystem[1].Pumpstarted,pidcontrollerpressuretransmittertothecontrolpointtoprovidethepressuresignal,whenthepressurepointisnotequaltosetvalue,pidcontrollerby
6、adjustingtheinverteroutputfrequencytochangethepumpspeedtoregulatethepipelinepressureconstitutesaclosed-loopfeedbackcontrolsystem,waterpressureregulatorsothatuserstimely,smallfluctuationsinresults.Andintheprocesscontrolsystemdesignedtotakefullaccountoftheprincipleofloadbalancing,totake"first-in-fir
7、stout"strategyofliningup,thewaytheimplementationoftherotatingfrequencytoensurethatthebasicbalanceofthewaterusage.1FrequencyControlConstantPressureWaterSupplyPrinciple FrequencyControlConstantPressureWaterSupplyS
