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ID:36788688
大小:2.90 MB
页数:50页
时间:2019-05-15
《基于PLC的七层电梯控制系统设计-毕业论》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、基于PLC的七层电梯控制系统设计摘要本次毕业设计是基于PLC的七层电梯控制系统,电梯是垂直方向的运输设备,是高层建筑中不可缺少的交通运输设备,它靠电力拖动一个可以载人或物的轿厢,在建筑的内导轨上做垂直升降运动,它在人们的日常生活中起着举足轻重的作用。该系统主要由PLC、逻辑控制电路组成。在硬件上以西门子公司的PLC做为控制中心,以及交流异步电动机、继电器、接触器、行程开关、按钮、发光指示器和PLCI/O接口组成为一体的控制系统,在软件上采用模块的设计法,包括楼层及轿厢内外呼叫请求、平层检测及开关门、控制电梯升
2、降、电梯运行状态指示控制等模块。整个系统通过PLC、逻辑控制电路对电梯的升降、加减速、平层、起动、制动等进行控制。其结构简单、运行率高、平层精度高。关键字:PLC,电梯,逻辑控制电路ISummaryThetextdescrribesacontrolsystemthatisdasedonPLC.Theelevatorisperpendiculardirectionaloftheconeyanceequipmentsbeindispensableinthehighbuildingoftransportatione
3、quipents.Itdependselectricpower,draggingalongtomoveacarthatcancarrypersonandlesdatrackinthebuildingofthewellwayupdoperpendicularitytoascendanddescendsport,thereisprominentfunctioninthepeople'slife.AndthecontrolelevatorcirculateofthePLCsystemslsohasmoreandmo
4、rehighrequest,requesttoattainthemovementpurposeof“steady,quasi-,quick”ofelevatormovement.ThatsystemmainlyfromPLC,logiccontroltheelectriccircuitconstitute.Inhardwareforsiemensplctothecontrolandanexchangsdifferencetotreadelectricmotoramongthem,afftertheelectr
5、icappliances,getintouchwithamachine,routeoftravelswitchandpressbutton,giveoutlighttheindicatorconstituteandPLCI/Oturnedaroundtheinterfaceforthecontrolsystemofintegralwhole,Inthesoftwaretodesignofthemodules,includingthefloorandthecarisoutsidethecallfortheflo
6、or,inspectionandcontroloftheelevatordoor,andthestateindicatesthatcontrol,addingmodules,ThewholesystempassesPLC.logiccontroltheelectricistotheriseandfallofelevator,Add,decelerate;Evenlayer;Start,maketomoveacontrol.Itsstruclueissimpleandcirculateaneffciency,e
7、venlayeraccuracyandwithgoodvalue.promote.Keywords:PLC;elevator;ThelogiccontrolselectriccircuitII目录1绪论.............................................................................................................................12电梯控制系统方案设计...................
8、..........................................................................22.1电梯的构造.........................................................................................................22.2电梯对控制信号的响
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