基于plc的挤出机控制系统的设计与研发

华中科技大学硕士学位论文基于PLC的挤出机控制系统的设计与研发姓名：陶思扬申请学位级别：硕士专业：材料加工工程指导教师：叶春生20060415IPLCPLC,,PLCPID,,[1]PID,3,,:PLC;PID:PLCPIDIIAbstractProducingaplasticssilkwithgoodfunction,notonlywanttherightusagerawmaterial,butalsoneedtheprocessequipmentsandthecraftparameterstochoosetouseverykey.Infact,theproduceissubjectedtothescrewstemelectricalmotor,thedegreeofhumidity,machinetubetemperature,thecharacteristicofthematerialprocess,exportthepressureetc.Becauseoftheinfluenceofmanyfactors,unsteadiesoftheplasticsproductexistsinthequantity.Whatthissystemadoptsisthemachinesystemofasinglescrewstemtoextrude.Inregardtoprocessequipmentsandparameterstochoose,thesinglescrewstemmachinetoextrudeissimplemost.Theparameterregulatealsoisthemostconvenienttoset,andsimpleandeasytoreform,iswideinadaptabilityofoperation,sotheequipmentwillgetthemostextensiveapplication.TheplasticsextrudingsystemisthecontrolsystemthattakesPLCastocontrolthecontrolsystemofthecore.AfterthecomparebetweenthePLCcontrolsystemandrelaycontrolsystem,computercontrolsystem,DCScontrolsystemdeeply,andaccordingtoactualrequest,thecontrolsystemisdecidedtoadopttotakethePLCascontrolcore,whichmakesthecontrolcentralizedmanagement,maintainandmaintenanceconvenience,andthepriceislower.Thesystem'stemperaturecontrolisadoptedthePIDfuzzycontrol.Duringproduceprocedure,thetimeconstantoftheplasticsextrudingisbig,puredelayislongandthecouplingisstrong.Thehighlynonlinearofthetemperaturecontrolprocess,dynamicstatemutability,multitimedimensions,informationcomplexities,thedispersionofsensingcomponentandexecutionunitandthelayeringdispersionofthedecisionagencydecideitishardtousetheprecisemathematicsmodeltokentocharacterize.TheadoptionofPIDthefuzzycontrolcanadjustcontrolledvariable,accordingtothepervioussettingcontrolregulation,withoutintermissionandautomatically,tomakecontrolsystemtotransittotheIIIsettingbalancedstateduringcontrolprocess.Thissystemsamplesfourpointstocontrolthetemperatureinheatprocess.Thecontrolaccuracyisin3,whichstrengthenthecredibilityandtheanti-interferenceabilitiesofthesystemandcansatisfythedemandoftheproductionnicely.Synthesizingabovecontents,thistextanalyzedcontrolsystemdesignandthedevelopmenttrendscurrentlyonthedomesticandinternationalsinglescrewstemextrudingmachine,andmadesurethesystemconstitute:takingPLCasthecore,tomaketemperatureandtheelectricalmotorspeedconcentratedcontrol;withthemutualmachineofthetouchpanelmonitoringtemperaturemotorspeed.ThetemperaturecontroladoptsthefuzzycalculatePID.Keywords:SinglescrewstemExtrudePLCPIDTouchPanelMonitorIII2006415______20064152006415111.1[2-3]PID80%PIDPID1.1.180%2000-250080-85%[4-6];1-1:21-1:[7-9],:1)2).3)31.1.22060-70YoungSanderSeeksLDPEKessler2080C.RauwendualK.WilxzynskLDPEPSK.WilxzynskB.Breolplater13%[10-11]3-59%-15%450%-20%8%200121000Kt12600Kt1000Kt[12]1.1.3)()11.22080PID++5(10)513[13]PID1,PID1[14-15][16]PLC1.3:1991863/CIMS(863-511-920-010):(1)FDMFDM,,,,.(2),,6(3),,:(1)FDM,,,,,,,,,,(3)FDM,,(2)FDM,,FDM,,,1.4,:(1),PLC,PLC,,,,,.(2),PID,PID,3,,(3)7,,,,,,,.:,.PLC,,PLC.,PIDPLC.82PLCPLCPLC[17-19]:1PLC2PLCI/O3PLC4PLC2.1PLCPLCPLCPLCPLCPLC2-192-1PLCPLC,,,,,.,,,,,,,,:PLCPLC2.2PLC2060PLCPLC(2-2)2-2PLCPLC,,,,,,,:BASIC,C,,SFC,,,,,10:PLC2070PLCPLCPLCPLCPLC:RCCPUPLCCPUCPUPLCPLCPLCPLCPLCPLCPLCPLCPLCPLCPLC:PLCPLCPLC2.3PLC2.3.1DCS115019752.3.2DCS2-1:Fnet(FieldNetwork)Cnet(ControlNetwork)Snet(SupervisionNetwork)Mnet(ManagementNetwork):4-20mA()()(4-20mA):12MnetSnetCnetFnet2-1:::132.3.3PLCDCSPLCPLCPLCPLCPIDPLCPCPLC(DCS)DCSDCSDCSPLC[20]PLCPLCPIDPLCPLC[21]PLCPLCDCSPLCPLCPLCPLCPLCPLC14PLCDCS2-32-3PLCDCSPLCDCS1066109848393831533.1PLCEM2313.1.1PLCPLCS7-226DC/DC/DC,S7-200.S7-200PLCWINDOWSSTEP7-WICRO/WIN32,PLC:(1)PID(2)S720010S7-200S7-200PROFIBUS-DP(3)STEP7-MICRO/WIN32WINDOWS[22-24]S7-226DC/DC/DC::190mmx80mmx62mm:14/10/:256/256/:32/32():4096:2560:7I/O:25616I/O:3AI/32AO:190h:6(30kHz):2(20kHz):2(8):14RS-485:2:13,11:8,8(DC)24VDCCPU/:150mA/1050mA240VACCPU/:40mA/160mA24VDC/:400mA/1.5mADC5V:1000Ma3.1.2EM231EM231.,,.+/-80mVA,15.EM231J,K,E,N,S,TR,DIP.EM231405ms(Pt10000700ms),0.05%.EM2314::71.2mmx80mmx62mm:183g():2WI/O:4:+5VDC(I/O):20mAL+:60mAL+,2DC:20.4V28.8VLED:24VDC,ON=,OFF=24VDC:,:-32000+32000,:032000:10M17:-3db@3.1kHz:30VDC:32mA:12A/D:4::():010V,05V():5V,2.5V:020mA:250uS:1.5ms95%:40dB,DC60Hz:(12V)EM231:DIP:SW1SW2SW3000J()001K010T011E100R101S110N111+/-80mVSW4SW5()=0(+3276.7)=1(-3276.8)SW6()=0=118SW7()=0=1SW8()=0=1MSBLSB1514320012000MSBLSB15430120003-1EM231ADC12030ADC1840ADC1163.1.3PLCPLCeViewMT-506LV4PC[25]PCPC193.1.4220V1.2KWMINASAMGDA303A1A220V600WMINASAMGDA063A1AABS3.2STEP7STEP7SIMATICPLCPASIMATICS7,SIMATICC7SIMATICWINAC:(1)(2)(S7-SCLS7-GRAPH)(3)STEP7PLC(S7-PLCSIM)PLCPLC(4)STEP7PLC(5)STEP7204PID4.1PIDPID.[26-30]PID[31][32]RajuGVS.[33]A.Gegov[34]Gupta[35]Gegov[36]J.HanV.M.Murray[37]S.J.WuC.T.Lin[38]K.Y.Tuden[39]Procyk[40]Scharf[41]P.G.Singer[42][43][44]PLCPID21eePIDKp,Ki,KdPID,KpKiKd:Kp,Kp,(),,,Kp,,,,Kp,,,KiKi,,Ki,,Ki,,Kd,,,,,,,Kd,,,,,,,22PIDPIDPIDPIDPID,:,,,,,,,PID,,,,4.2PIDPID[45]4-14-1PIDsp(t)pv(t)c(t)PID[46]dtdeKMedtKeKtMCinitialtCC×+++×=∫0)(1=+++M(t)e(t)=sp(t)-pv(t),init