基于PLC的高速经编机电子送经控制系统

第26卷第9期2009年9月Mechanical&ElectricalEngineeringMagazineVo.l26No.9Sep.2009:2009-04-02:()(2007C11027):(1986-),,,.E-mai:[e-mail]:,,,.E-mai:[e-mail]基于PLC的高速经编机电子送经控制系统*杨薇,史伟民,张立朝(,310018):为了保证经编机在高速情况下的送经量恒定,通过分析传统机械式送经系统存在的缺陷,探讨了现代电子送经系统的优点,采用了欧姆龙CP1H可编程序控制器(PLC)作为核心控制单元,设计了一种基于PLC内置PID控制的电子送经控制系统,实现了高速经编机的稳定送经在YJKS3型高速经编机上的运行结果表明,该系统稳定可靠响应速度快经纱张力恒定,可以有效地提高织物质量和工作效率:经编机;工作原理;电子送经;闭环控制;可编程序控制器:TP273:A:1001-4551(2009)09-0087-03Electroniclet-offcontrolsystembasedonPLCofhigh-speedwarpknittingmachineYANGWe,iSHIWe-imin,ZHANGL-ichao(ZhejiangProvinceKeyLabofModernTextileMachinery&Technology,ZhejiangSci-TechUniversity,Hangzhou310018,China)Abstract:Inordertoensurehigh-speedwarpknittingmachinesentconstantlyinthehigh-speedcases,theadvantagesofmodernelectroniclet-offsystemwereexploredafteranalyzingthedefectsoftraditionalmechanicallet-offsystem,OmronCP1Hprogram-mablelogiccontroller(PLC)wasusedasacorecontrolunit,akindofelectroniclet-offcontrolsystembasedonthePLCbuilt-inPIDcontrolwasdesigned.Thestablelet-offinhigh-speedwarpknittingmachinewasrealized.TheresultsthatthissystemrunonYJKS3high-speedwarpknittingmachine,showthatthesystemisstableandreliable,responsefast,andhasconstantwarpten-sion,improvesthefabricqualityandworkefficiency.Keywords:warp-knittingmachine;workingprinciple;electroniclet-of;fclosed-loopcontro;lprogrammablelogiccontroller(PLC)0引言,,,,,,,,,,,,,,[1-3],,PLC,,,[4-5],,PLC,YJKS3PLC,,1电子送经控制系统框图及工作原理,[6],,3,311:,(),PLC,,,CP1HPLC,,PID,CP1HPLC,,,,,,[7]:(1):N1=(F/480)@N2@z/Li(r/min)(1)F),mm/rack,480;N2),r/min;z);Li),mm(2):Li=L2-(L2-L1)@Zi/Z(mm)(2)L2),mm;L1),mm;Z);Zi)(3):N1=(F1/10000)@60@Z1(r/min)(3)F1),10000;Z1)2系统硬件设计,CP1HPLC,4,50kHz,4,100kHz,4,PLC;PLC,,PID,,,,,,,1.5kW,,,,,,,11kW;,,;1024;10.4,3系统软件设计,/PID,OMRONCP1HPLCPID3.1PIDPID(P)(I)(D),PID2#88#262PIDR)设定的期望值;Y)控制变量;S)实际输出值;e)控制偏差值(e=R-S)S,e,,Y,D/A,,SR3.2PIDPIDR(t)S(t)e(t)(P)(I)(D),[8]PID:S(t)=Kpe(t)+1T1Qt0e(t)dt+Tdde(t)dt(4),:SK=SK-1+Kp$ek+KIek+Kd($ek-$ek-1)(5)SK)K,;SK-1);eK);$eK)K,$eK=eK-eK-1;$eK-1)K-1,$eK-1=eK-1-eK-2;Kp,KI,Kd),KI=KpTI,Kd=KpTdKp,KI,Kd,,,PLC,12ms3.3:,,,PID,,334结束语YJKS3,,PLC,,3,1500r/min,(References):[1],.[J].,2002(4):14-18.[2]TheIndiaTextileJournalGroup.Electroniclet-off&take-up[J].TheIndianTextileJournal,2003,113(4):90.[3]MAYERK.TextilmaschinenfabrikGmbH.Risingabovetheconventional[J].KettenwirkPraxis,2003(3):3-5.[4],,,.PLC[J].,2006,27(10):102-104.[5].PLC[J].,2007,9(3):84-88.[6].[J].,2006(4):3-5.[7].()[J].,2005,33(5):35-37.[8].PID[J].,2005,32(4):367-370.[:]#89#9,:PLC