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ID:32145829
大小:2.06 MB
页数:61页
时间:2019-01-31
《基于变参数控制的离心泵变压运行节能策略分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、江苏大学硕士学位论文ABSTRACT舡thewatersupplyinfrastructureofagricultureandindustryproductionandliving,pumpsystem,whichismadeupofpumpassembly,pipes,valves,frequencyconverter,dataacquisitiondevicesandcontrolsystemandSOon,consumeslotsofenergyinoperating.Variable-pressurewatersupp
2、lywasprovedtobea900doperationmodetosaveenergybymanyresearchers.Buttherearestillsomeproblemsunsolvedinoperationandcontrolasfollows:(1)theclassicalPIDcontrollerislimitedincomplicatedsystem,whichmayresultinpressurefluctuationat呱沁rsideandtOOhi曲ortoolowpressureinwaterpip
3、elinewhenpumpconditionchanged;(2)modernintelligentcontrollerwhosealgorithmisintricateisdifficultincombining、ⅣitllfrequencyconversiontechnologySOthattheapplicationanddisseminationofvariable-pressureWasgreatlyrestrictedinproject.Thecontrollerisacrucialfactorforcontrol
4、performanceofpumpoperationandhowtodesignandapplyitisthedifficulty.Aimingattheproblemsexistinginpumpvariable-pressureoperation,thispapercarriedoncreativeresearchfocusingonthedesigningofvariable—parametercontrollerwiththepurposeofsavingenergyforpumpsystemasfollows.The
5、controlmodelofpumpvariable—pressureoperationWasconstructedbytheoreticalanalysisandstepresponseexperimentidentificationandacontrollerdesigningstrategyWasproposedaccordingtothemodelcharacteristic.First,theparameterandstructureofcontrolmodelWasanalyzedonthebasisofthefe
6、atureofwatersupplysystem.Andthenthetest-bedofstepresponseexperimentWasinstalledforvariable-speedoperationofwaterpumps,andtheexperimentschemethatdatawasacquiredwhentheopeningofvalveWas40%,50%,80%,100%Wasdesignedforsystemidentificationofconstant—pressureandvariable—pr
7、essureoperation.AndthenprocessmodelsareconstructedwithsystemidentificationtOOlboxofMATLABaccordingtOexperimentdata.Contrastingthetheoreticalandexperimentalmodels,variationamongdifferentprocessesisanalyzedfromverticalandhorizontalaspects.Acontrolstrategyofvariable-pa
8、rameterPIDisputforwardforvariable-pressureoperationofcentrifugalpump.(2)TheperformanceofPIDcontrollerinpumpvariable—pressureoperationWasan
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