Merritt Sewing Machine Price List In Chennai

HIGH SPEED FLAT INDUSTRIAL SEWING MACHINE

Sewing machine with servodriver is so called computer controlled machine.Thecontrolsystemofproposedcomputercontrolledsewingmachineconsistofsewingmachinehead,DSPcontrolboard,servomotor,footinputanddisplay.Theservosystemuseshighperformancedigitalsignalprocessor(F2407aDSP)ascorecontrolchip.Recently,digitalimplementationofthecontrollershasbecomeatrendinindustrialdrivesystemareabecausehigh-speedprocessorssuchasDSPhavebeenfullydevelopedwhichallowhighaccuratecomputationwithina shortsamplingtime.WithDSP,mostofthecontrolfunctioncanberealizedbysoftwareinsteadofhardware,socanreducethecostofsewingmachine.DSPboardrealizeinput-outputfunctionandmotorcontrolfunction.Afull-digitaldesignmethodisadoptedtocarryouttheclose-loopcontrolofPMservomachine,includingcurrentloop,speedloopandposition Loop

Industrialsewingmachinesaremainequipmentingarmentindustry,whichhasalargenumber.Today’sscienceandtechnologychangewitheverypassingday.Inordertoachievehighperformanceandenergy-saving,nowadaysmoredesignerstendtodriveindustrialsewingmachinesbyPMSMservosystems[3,6].PMSMdriveshavebeenusedashighperformancevariablespeedsystemsinmanyindustrialapplicationsbecausethosemotorshaveseveralinherentadvantages,suchasruggedconstruction,easyformaintenance,highefficiency,hightorquetocurrentratio,lowinertia,andhighpowerfactor[1,2,7].Thispaperproposesanimprovedservosystemforhighspeedflatindustrialsewingmachines.Theservosystemcangethighperformancetorquecontrolofspecial-designedhighefficiencyraremetalPMSM.Modularizedsewingfunctionssoftwareonthissystemcanrealizehigh-precisionneedlestopposition,threadcut,threadshift,sewingcount,footraise-press,automaticthreadtrimmer,reverse-feedandpresserfootlift,etc.ofsewequipment.Sewingmachineswiththoseservosystemsareapplicablefordifferentmaterials,alsowiththeiradvancednoise-decreasingmotorsanddrivers,theycanremainreliabilityanddurabilityat thehighspeedof5000r/min

HIGH SPEED FLAT INDUSTRIAL SEWING MACHINE

experimentalresultcurveofsewingprocedureshowsthat:thesystem’saccelerating-decelerationtimefromORPMto5000RPMislessthan200ms,andthespeedfeedbackcanaccurately trackspeedreferenceattherangeof5-5000RPM,whichprooftheservocontrolsystemmeetpurposeofindustrialsewingmachineswell.Inordertoachievehighperformanceandenergy-saving,nowadaysmore designerstendtodriveindustrialsewingmachinesbyPMSMservosystem.Thispaperpresentsapermanentmagnetsynchronousmotor(PMSM)servodrivesystemforhighspeedflatindustrialsewingmachine.Inthisservosystemvoltagefeed-forwarddecouplingcontrolwasusedincurrentlooptoimprovespeed andpositioncontrolperformance.Variablegaincontrolisadoptedinsystemtocompensateincompletedecouplingcausedbydisturbanceandinaccuracyofparameter.PMSMusedinsystemisspeciallydesignedasconcentratedwindingandleanchargemagnetismbarrel-drainrotor,whichcanimprovemotoroperatingefficiencyandreducetorqueharmonicseffectually.https://www.vssewingmachine.in/

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