基于PLC的风机控制系统设计

安徽工程大学毕业设计（论文）I摘要可编程控制器(PLC)是一种以微处理器为核心,综合了计算机技术、自动控制技术和网络通信技术的通用工业控制装置。它具有使用方便、维护容易、可靠性好、性能价格比高等特点,广泛应用于工业控制的众多领域。煤矿主通风机是煤矿生产的重要设备，通风机能否正常工作，直接影响煤矿的生产活动。因此对主通风机实现在线监控有很重要的意义。本文针对通风机的工作环境和运行特点，以PLC为主控设备，介绍了可编程序控制器（PLC）在煤矿通风系统中的应用；探讨了通风机实现自动控制系统的系统组成和设计；涉及硬件设备的选型与组态；编制了通风机实现自动控制梯形图；并简要介绍了PLC与其他智能装置及个人计算机联网，组成的控制系统。本系统提高了主通风机设备的自动化管理水平，有力地保证了主通风机设备的经济、可靠运行，为设备的管理和维修提供了可靠的科学依据。关键词：煤矿通风机；PLC；在线控制黄炜：基于PLC的风机控制系统设计IIDesignofFanControlSystemBasedonPLCAbstractTheprogrammablelogiccontroller(PLC)isamicroprocessorcore,acombinationofcomputertechnology,automaticcontroltechnologyandnetworkcommunicationtechnology,generalindustrialcontroldevices.Ithaseasytouse,easymaintenance,reliability,highcostperformancecharacteristics,widelyusedinmanyareasofindustrialcontrol.Theminevertilatorcoalproductionequipment,thefancanworkadirectimpactoncoalproductionactivities.Therefore,themainfantoachieveonlinemonitoringofveryimportantsignificance.Inthispaper,theworkingenvironmentandoperationalcharacteristicsoftheventilator,thePLCasthemasterdevicetointroduceaprogrammablelogiccontroller(PLC)inthemineventilationsystem;explorecompositionanddesignoffansystemtoachieveautomaticcontrolsystem;involvedinequipmentselectionandconfigurationofhardware;thepreparationoftheventilatortoachieveautomaticcontrolladder;andbrieflydescribesthePLCandotherintelligentdevicesandpersonalcomputersnetworkedcontrolsystemcomposedof.Thissystemimprovestheventilatorequipmentautomationmanagementlevel,toensurethemainventilatorequipment,economic,reliableoperation,andprovidesareliablescientificbasisforthemanagementandmaintenanceofequipment.Keywords:Coalmineventilator;PLC;Onlinemonitoring安徽工程大学毕业设计（论文）III目录引言............................................................................................................................1第1章绪论..........................................................................................................21.1课题的研究意义..................................................................................................21.2PLC及风机控制系统的发展状况......................................................................2第二章总体方案设计..................................................................................................52.1控制系统的要求.................................................................................................52.2系统构成及工作原理.........................................................................................52.3变频调速节能分.................................................................................................52.4变频调速的依据.................................................................................................62.5离心风机控制原理分析.....................................................................................6第3章系统硬件设计................................................................................................103.1温度传感器的选择...........................................................................................103.2PLC的选择........................................................................................................103.2.1FP0系列PLC的特点................................................................................103.2.2PLC控制系统设计流程............................................................................103.3变频器的选择...................................................................................................11第4章系统软件设计................................................................................................154.1PLC程序设计....................................................................................................154.1.1离心风机转换过程分析...........................................................................184.1.2系统工作状态...........................................................................................184.1.3状态转换过程的实现方法.......................................................................194.2程序设计的梯形图...........................................................................................19第5章系统可靠性设计及调试................................................................................235.1系统的可靠性设计................................................................................................235.2系统调试...............................................................................................................235.21软件系统的调试.............................................................................................235.22硬件系统的调试.............................................................................................235.23软硬件结合调试.............................................................................................23结论与展望..................................................................................................................25致谢............................................................................................................................26参考文献......................................................................................................................27附录A一篇引用的外文文献及其译文.....