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ID:28465944
大小:585.55 KB
页数:26页
时间:2018-12-10
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1、外文资料与中文翻译外文资料:Programmabledesignedforelectro-pneumaticsystemscontrollerThisprojectdealswiththestudyofelectro-pneumaticsystemsandtheprogrammablecontrollerthatprovidesaneffectiveandeasywaytocontrolthesequenceofthepneumaticactuatorsmovementandthestatesofpneumaticsystem.Theproje
2、ctofaspecificcontrollerforpneumaticapplicationsjointhestudyofautomationdesignandthecontrolprocessingofpneumaticsystemswiththeelectronicdesignbasedonmicrocontrollerstoimplementtheresourcesofthecontroller.1IntroductionTheautomationsystemsthatuseelectro-pneumatictechnologyarefo
3、rmedmainlybythreekindsofelements:actuatorsormotors,sensorsorbuttonsandcontrolelementslikevalves.Nowadays,mostofthecontrolelementsusedtoexecutethelogicofthesystemweresubstitutedbytheProgrammableLogicController(PLC).Sensorsandswitchesarepluggedasinputsandthedirectcontrolvalves
4、fortheactuatorsarepluggedasoutputs.Aninternalprogramexecutesallthelogicnecessarytothesequenceofthemovements,simulatesothercomponentslikecounter,timerandcontrolthestatusofthesystem.WiththeuseofthePLC,theprojectwinsagility,becauseitispossibletocreateandsimulatethesystemasmanyt
5、imesasneeded.Therefore,timecanbesaved,riskofmistakesreducedandcomplexitycanbeincreasedusingthesameelements.AconventionalPLC,thatispossibletofindonthemarketfrommanycompanies,offersmanyresourcestocontrolnotonlypneumaticsystems,butallkindsofsystemthatuseselectricalcomponents.Th
6、ePLCcanbeveryversatileandrobusttobeappliedinmanykindsofapplicationintheindustryorevensecuritysystemandautomationofbuildings.Becauseofthosecharacteristics,insomeapplicationsthePLCofferstomuchresourcesthatarcnotevenusedtocontrolthesystem,electro-pneumaticsystemisoneofthiskindo
7、fapplication.TheuseofPLC,especiallyforsmallsizesystems,canbeveryexpensivefortheautomationproject.Analternativeinthiscaseistocreateaspecificcontrollerthatcanoffertheexactlysizeandresourcesthattheprojectneeds[3,4].Thiscanbemadeusingmicrocontrollersasthebaseofthiscontroller.The
8、controller,basedonmicrocontroller,canbeveryspecificandadaptedtoonlyonekindo
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