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1、自动无人搬运车的发展ThedevelopmentofautomaticdriverlesscarsTheunmannedvehiclesystem,orAGVS,isaneffectivemeansoflogisticstransportationintoday'sflexiblemanufacturingsystem(FMS)andautomatedwarehousesystems・AGVsystemisthecoreequipmentofAGV(AGV),asakindofindustrialcarryingvehicles,unmarmedAGVtakenappl
2、icationinthe50s.Itisusedasadrivingforce,carryingweightfromafewkilogramstoahundredtons.Theworkplacecanbeanoffice,aworkshop,aportoradock・Modernagvsarecomputerizedandhavemicroprocessors・MostoftheAGVSisequippedwithasystemofcentralizedcontrolandmanagementofthecomputer,isusedtooptimizetheopera
3、tionprocessofAGV,handlinginstructions,transmit,componentsandcontrolAGVpathtracking・Agvguidewaysmainlyincludeelectromagneticinductionguidance,laserguidanceandthemagnetgyroguide,withtherapiddevelopmentoflaserguideway,buttheelectromagneticinductionandthemagnetgyroguidewayoccupylargerproport
4、ion.Electromagnetisminducestheelectricmagneticfieldandelectromagneticsensortoguidethedriverlesscartorun.Thebasicprincipleisthatwhenthealternatingcurrentflowsthroughthecable,thecloserthemagneticfieldisgeneratedbytheelectromagneticfieldaroundthecable,thestrongerthestrengthofthemagneticfiel
5、d,andtheweakmagneticfieldinthedistance・Thevoltageisproportionaltothestrengthofthefieldbysensingthevoltageatbothendsofthecoilbytheelectromagneticfieldoftheinductioncoil.Whenthecableisinthemiddleofthecoil,thevoltageoftheleftandrightcoilsisequal,andthesignaliszero.Wheneithersideoftheguideto
6、guidethecableantenna,ononesideofthecoilvoltagerise,ontheothersideofthevoltageisreduced,twopotentialdifferenceofinductioncoilistomanipulateAGVtosignal,tocontrolthedirectionofthesteeringmotortocorrectionofAGV.ThelaserguidesthelearningportersThiskindofcarrieroflaserseekercannotpeoplesupervi
7、sionundertheconditionofcompletehandlingoftheobject,aslongasthehandlingforthefirsttimeguidecarriertocompletealearning,thecarrierwillautomaticallyfinishtherestofthetask・Amovingcarisalaserbeamthatisfiredfromthelaunchheadandthenreceivesalaserbeamreflectingbackaroundit.Tocalcu
