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黑龙江工程学院本科生毕业设计I摘要皮带输送机在许多企业中占有很重要的地位，但其控制单元种类繁多，都存在着性能和功能的差异。传统继电器控制的皮带传输机存在电路复杂、可靠性差、故障诊断与排除困难等缺点，为了取得企业的良好的经济效益和社会经济效益，提出了采用实用性强、操作方便的PLC梯形图（LADDERDIAGRAM）编程语言对皮带输送机控制系统进行设计。全文采用了三菱公司生产的FX2n系列微型可编程控制器在四段皮带输送机控制系统中的应用，给出了PLC控制皮带输送机系统的硬件组成和软件设计，其中包括PLC选型、I/O地址分配、I/O端子接线、程序设计和控制原理。该设计大大提高了设备的可靠性，减少了故障率，取得了成功。关键词PLC梯形图皮带输送机自动控制监控系统黑龙江工程学院本科生毕业设计IIABSTRACTTransmissionbeltmachinesoccupyaveryimportantpositioninmanybusinesses,butitscontrolunitisvariety,thereisadifferencebetweentheperformanceandfunctionality.Thetraditionalrelaycontrolofthetransmissionbelthascomplexcircuitsexist,poorreliability,faultdiagnosisandruleoutthedifficultiesshortcomings,inordertoachievetheeconomicbenefitsofgoodcorporateandsocialeconomicbenefits,byusinguserfriendly,practical,strongPLCladderLADDERDIAGRAMprogramminglanguageonthebelttransmissioncontrolsystemdesign.ThetopicisintroducedtheapplyforSeriesCOmronPLCinfourparagraphsbelttransmissionsystemofcontrol,itisgiventhehardwareandsoftwaredesignofthePLCcontrolbelttransmissionsystems,includingthePLCSelection,I/Oaddressassignment,I/Oterminalwiring,programmingandcontroltheory.Thedesignoftheequipmentimprovethereliabilityofequipmentandreducethefailurerate,ithasbeensuccessful.KeywordsPLCLadderTransmissionbeltmachineAutomaticcontrolSupervisoryequipment黑龙江工程学院本科生毕业设计目录摘要..................................................................................................................................ⅠAbstract................................................................................................................................Ⅱ第1章绪论...11.1研究现状和研究意义...11.1.1国内外皮带运输机的研究现状.....11.1.2国内外运皮带运输机的技术的差距......11.2课题的研究目的......................................................................................................31.3研究内容..................................................................................................................31.4技术路线...................................................................................................................4第2章PLC控制系统及程序的设计..............62.1PLC的结构及工作原理..........................................................................................62.1.1PLC的结构......62.1.2PLC的工作原理......8黑龙江工程学院本科生毕业设计2.2系统设计的基本要求...........................................................................................102.3系统设计的基本步骤............................................................................................112.4系统构成.................................................................................................................132.5工艺要求.................................................................................................................152.6本章小结................................................................................................................16第3章系统设备的选型...............................................................................................163.1可编程控制器的特点..173.2本设计采用的PLC....173.3电动机.......173.4皮带运输机...203.5其他....203.6本章小结.....27第4章系统控制方案.....284.1控制点的统计与描述.284.2程序过程说明....304.3系统整体运作介绍.....314.4本章小结......33结论......................................................................................................................................34参考文献.............................................................................................................................35致谢......................................................................................................................................37
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