基于PLC及变频调速器的多电机控制研究

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1、大连交通大学硕士学位论文基于PLC及变频调速器的多电机控制研究姓名：魏蕾申请学位级别：硕士专业：控制理论与控制工程指导教师：郑士富20091220人连交通大学T学硕十学位论文AbstractWiththerapiddevelopmentoftheautomaticcontroltheory，thenetworksoftheindustrialcontrolandthetechnologyofthecomputer，communicationnetworkandSOon，Ontheoccasionsint

2、heindustrial．asinglemotorcontrolcannolongermeettheneedsoftheactualproductionprocess，moreandmoreoccasions，theneedforsimultaneouscontrolofmultiplemotorsisexisted，theproblemofthemulti-motorcontrolhasbecomeanimportantelementofthedevelopmentandresearchincontr

3、olindustry．Inthispaper，onthebasisofthedescribingV、，、，Ftechnology-relatedknowledge，andfunctionalanalysisofthePLC，basedonfullconsiderationofthecost，maintenancereliabilityandmanyotherfactors，amulti—motorcontrolsystemprogramisproposed，itisconstituteofamachin

4、efromthePC，SiemensPLC，frequencyconversiondevices，andasynchronousmotoretc．Wehavetheoveralldesignofthecontrolsystem，andhaveakeyanalysisfortheprincipleandcharacteristicsofmulti．motorsynchronouscontrol，identifysynchronouscontrolprogram，proposeacontrolstrateg

5、yformulti—motorsynchronousbasedonfuzzyPIDcompensator，andgivethedesignmethodoffuzzyPIDcompensator．UsingtheUSSprotocolbasedontheR$485interfacetocarryouttheserialcommunicationofthePLCandfrequencyconverter，anddiscussingtheUSSagreementhowtocontroltheinvertera

6、ndproceduresforthedesign．ThroughtheUSSprotocol，S7-200PLCcouldreadandsettheinverterparametersinreal-time．ItalsodetailstheserialportcommunicationconditionsbetweenHostComputerandthetypeofSiemensS7-200PLCaswellastheuseofhigh—levellanguagetocompiletheprincipl

7、eofcommunicationinterfacebetweenPLCandthePCmachine．TheUSeofPLC．free．portcommunicationcouldachievetheserialdatatransmissionbetweenPCandHostComputer，theinverter’Sinformationwillsendtotheuppermachineinreal—timethrou．ghS7．200．achievingthereal．timecommunicati

8、onsbetweenthecomputerandPLC．BytheuseofPLC’Sownlogicofoperationanddataprocessingcapabilitytoenableadesignofmonitoringsystem，andultimatelycarryoutthedevices’real—timemonitoringoftheworkingconditionswhichiSconnectedtothePLC．T