题目砂轮送料控制系统的设计摘要目前我国的大部分企业受到资金短缺，管理方面的限制，送料装置一般采用人工送料。但是人工送料劳动力大，效率低，而且容易造成事故。因此本文针对砂轮厂人工送料系统进行了自动化改造。本着降低成本，提高效率，保障安全的原则，设计了以PLC为核心的砂轮自动控制送料系统,利用变频器实现变速送料,称重传感器完成自动称重和物料入模。先根据控制要求，选择了系统的主要硬件并完成电气线路的搭建。然后设置了变频器的参数和PLC的程序。通过模拟调试,该系统具有操作方便,工作可靠,提高生产效率,大大减少劳动率的问题.从而实现工业送料自动化成为“无人值班，少人值守”的控制系统，具有很高的推广价值。关键词：PLC；变频器；砂轮送料；称重传感器AbstractAtpresent,mostenterprisesinChinaundertheshortageoffunds,managementrestrictions,feedingdevicegenerallyusestheartificialfeeding.Buttheartificialfeedinglabor,lowefficiency,andeasytocausetheaccident.Soaccordingtothegrindingwheelfactoryofartificialfeedingsystemfortheautomatictransformation.Withlowercosts,improveefficiency,safetyprinciples,designofthegrindingwheeltoPLCasthecoreoftheautomaticfeedingsystem,therealizationofvariablespeedfeedtheuseofinverter,theweighingsensorautomaticweighingandmaterialintothemold.Accordingtocontrolrequirements,selectthemainhardwaresystemandsetupcompleteelectricalcircuit.AndthensettheparameterandPLCprogram.Throughthesimulationanddebugging,thesystemhastheadvantagesofconvenientoperation,reliablework,improveproductionefficiency,reducelaborrate.Inordertoachieveindustrialfeedingautomationhasbecomea"unattended,controlsystemforunattendedoperation",hastheveryhighvalueofpopularization.Keywords:PLC;inverter;grindingwheelfeeding;theweighingsensor目录摘要................................................................................................................................IABSTRACT..................................................................................................................II目录............................................................................................................................III第一章绪论....................................................................................................................11.1概述........................................................................................................................11.2设计任务与总体方案的确定................................................................................21.2.1设计任务.........................................................................................................21.2.2控制要求.........................................................................................................2第二章PLC基础知识...................................................................................................22.1PLC的基本结构及部分作用...............................................................................32.2PLC的工作原理...................................................................................................52.3PLC控制系统的设计的原则...............................................................................62.4PLC控制系统的设计步骤...................................................................................82.5PLC的编程语言及编程.....................................................................................102.6西门子S7-200PLC....................................................
