基于PLC与DCS的步进式加热炉控制系统设计.doc

内蒙古科技大学毕业设计说明书（毕业论文）基于PLC与DCS的步进式加热炉控制系统摘要步进式加热炉是轧钢生产线上的关键设备之一，与轧制机组构成了轧制生产线的主体生产环节。为了提高步进式加热炉产品的质量，本文研究主要是从工业控制的角度出发，对步进式加热炉加热的过程控制系统作了研究和探讨。本文通过了解整个步进式加热炉的生产工艺及影响因素，确定了燃料燃烧控制系统、温度控制系统和炉膛压力控制系统的控制方案，并对其控制规律及参数进行选择。下位机采用PLC进行软件编程，上位机采用DCS软件进行画面监控显示，实现了加热炉温度和炉膛压力的自动控制功能。最终可达到加热炉安全、经济、高效的运行。关键词：步进式加热炉；自动控制系统；PID控制；PLC；DCSTheStep-typeOfTheHeatingFurnaceControlSystemBasedOnPLCAndDCSAbstractStep-typeoftheheatingfurnaceisoneofthekeyequipmentintheproductionlineofrollingsteel,itconstitutesthemainproductionprocessesoftherollingproductionlinewiththerollingunit.Inordertoimprovethequalityofproductsinthestep-typeoftheheatingfurnace,inthispaper,theresearchismainlyfromtheperspectiveofindustrialcontrol,itdesignsandexploresthecontrolsystemoftheheatingprocessaboutstep-typeoftheheatingfurnace.Thisarticledesignsthecontrolplanofthefuelburningcontrolsystem,thetemperaturecontrolsystemandthechamberpressurecontrolthesystemthroughunderstandingtheentirestep-typeheatingfurnace'stechniqueofproductionandinfluencingfactors，andchosesitscontrolruleandtheparameter.Next-bitmachineusesthesoftwareofPLCtoprogramthesoftware，thehostcomputerusesthesoftwareofMCGStomonitoranddisplayscreen，whichrealizestheautomaticcontrolfunctionofthetemperatureandpressureofthefurnace.Finallyitachievestheheatingfurnacemovementsafely,economically,thehighlyeffective.Keywords:step-typeoftheheatingfurnace;automaticcontrolsystem;PIDcontrolalgorithm;PLC;DCS目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc232568815"摘要PAGEREF_Toc232568815\hIHYPERLINK\l"_Toc232568816"AbstractPAGEREF_Toc232568816\hIIHYPERLINK\l"_Toc232568817"第一章引言PAGEREF_Toc232568817\h1HYPERLINK\l"_Toc232568818"第二章步进式加热炉工艺PAGEREF_Toc232568818\h3HYPERLINK\l"_Toc232568819"2.1步进式加热炉简介PAGEREF_Toc232568819\h3HYPERLINK\l"_Toc232568820"2.1.1步进式加热炉的概念PAGEREF_Toc232568820\h3HYPERLINK\l"_Toc232568821"2.1.2步进式炉的几种类型PAGEREF_Toc232568821\h3HYPERLINK\l"_Toc232568822"2.1.3步进式炉的优缺点PAGEREF_Toc232568822\h3HYPERLINK\l"_Toc232568823"2.2