摘要本文首先介绍了可编程控制器（PLC）的结构和功能，以及全自动工业洗衣机的结构，然后分析和研究了全自动洗衣机控制系统的工作原理。在此基础上，结合工作需要，提出了以PLC为控制核心部件进行全自动洗衣机控制系统的设计。然后，从全自动洗衣机六个工作过程出发，对系统控制方案进行了可行性分析和论证，包括PLC以及外围设备选型、编程方式选择、各种抗干扰措施等。最后设计了以西门子S7-200系列PLC为控制核心的全自动工业洗衣机控制系统，包括了控制系统的I/O端口分配、PLC接线图及PLC程序设计，并详细分析了程序的控制过程，实现了洗衣机洗衣过程的自动化，具有智能化程度高、安全可靠、方便、灵活等特点。关键字：工业洗衣机，PLC，控制系统，设计ABSTRACTThispaperinitiallyintroducesthestructureandfunctionoftheprogrammablelogiccontroller(PLC),aswellasthestructureofautomaticindustrialwashingmachine.Thenitanalyzesandstudieshowtheautomaticwashingmachinecontrolsystemworks.Basedonitsworkingprinciple,itdesignstheautomaticwashingmachinecontrolsystemwithPLCasthecorecomponents.Then,inthelightofsixworkingprocessofautomaticwashingmachine,itenhancesitsfeasibilityofsystemcontrolprogramming,includingPLCandperipheralequipmentselection,programmingmodeselectionandvarietyofanti-interferencemeasures,byanalysisandinduction.Finally,itdesignsacontrolsystemofautomaticindustrialwashingmachinewithSiemensS7-200seriesPLC,containingtheI/Oportassignment,PLCwiringdiagramandPLCprogramming.Itaswellanalyzes,indetails,thecontrolprocessofprogrammingwhichachieveshighlevelofautomationforthewashingprocess,featuredbysubstantiallevelofintelligenceinaccordancewithsafety,reliability,convenienceandflexibility.Keywords:Industrialwashingmachine,PLC,controlsystem,design目录第一章绪论.........................................................11.1研究背景........................................................11.2国内外研究现状..................................................21.3研究意义........................................................51.4设计目标........................................................61.5研究内容........................................................71.6技术方案........................................................71.7论文结构........................................................9第二章工业洗衣机控制系统...........................................102.1洗衣机的发展...................................................102.2工业洗衣机工作原理.............................................112.3工业洗衣机特点.................................................132.4洗衣机控制系统.................................................13第三章系统硬件设计.................................................163.1控制器方案选择.................................................163.1.1微处理器控制...............................................163.1.2电动机控制.................................................173.1.3PLC控制...................................................183.2系统硬件电路设计...............................................193.3PLC控制电路设计...............................................203.4电动机选型.....................................................263.5光电耦合器选型.................................................273.6水位检测电路设计...............................................283.7键盘和显示电路设计.............................................293.8继电器选型.....................................................323.9电动机调速电路设计..........
