造纸原料蒸煮过程装料微机控制

微型计算机控制技术课程设计造纸原料蒸煮过程装料微机控制系统设计报告学院：信息工程学院专业：自动化班级：1204班学生姓名：徐飞煜学号：2012001393设计时间：2015.06.29——2015.07.03成绩：微机原理课程设计-2-造纸原料蒸煮过程装料微机控制系统摘要本文对造纸原料蒸煮过程装料微机控制系统进行了研究，说明了造纸原料蒸煮过程装料微机控制系统实现所需要的步骤。蒸煮过程是制浆造纸生产中的关键工序之一，对于整个造纸生产过程中纸浆得率和纸的质量有很大影响。它要求根据原料的特点、纸浆的质量和生产设备的实际情况制定出合理的蒸煮工艺，确定装球量、用碱量、蒸煮温度和压力。硬件的选择，软件的设计，能够基本实现造纸原料蒸煮过程装料。过程中使用了MCS-51系列的8051单片机作为中央处理器，差压流量变送器，A/D转换器,D/A转换器。A/D转换使用的是ADC0809，D/A转换使用的是DAC0832。本系统采用非编码行列式键盘，LED显示块使用七段LED。本设计中为流量测量，则使用差压式流量测量。执行机构选择智能式电动执行机构。系统程序用C语言编写，达到对系统的控制。关键词：造纸原料、蒸煮、计算机、温度控制微机原理课程设计-3-DesignforTemperatureControlSystemofResistanceFurnaceAbstractThisarticlefedthemicrocomputercontrolsystemtothepapermakingrawmaterialsteamboilingprocesstoconducttheresearch.Explainedtheapermakingrawmaterialsteamboilingprocessfeedsthestepwhichthemicrocomputercontrolsystemrealizationneeds.Thesteamboilingprocessisoneofinsystemthickliquidpapermakingproductionessentialworkingprocedures.Thepaperpulprateandthepaperqualityhavetheverytremendousinfluenceregardingtheentirepapermakingproductionprocessin.Itrequestsaccordingtorawmaterialcharacteristic,thepaperpulpqualityandtheproductionequipmentactualsituationformulatesthereasonablesteamboilingcraft,determinedinstallstheballquantity,withthealkaliquantity,steamsthetemperatureandthepressure.Thehardwarechoice,thesoftwaredesign,canrealizethepapermakingrawmaterialsteamboilingprocesstofeedbasically.IntheprocessusedtheMCS-51series8051monolithicintegratedcircuitstotakethecentralprocessor,thedifferencepressedthecurrentcapacitytransmittinginstrument,theA/Dswitch,theD/Aswitch.TheA/DtransformationuseisADC0809,D/AtransformstheuseisDAC0832.Thissystemusesthenon-codedeterminantkeyboard,LEDdemonstratedtheblockusessevensectionofLED.Inthisdesignistheflowmeasurement,thenusedifferentialpressuretypeflowmeasurement.Implementingagencychoiceintelligencetypeelectricallyoperatedimplementingagency.ThesystemprogramwiththeClanguagecompilation,achievestothesystemthecontrol.微机原理课程设计-4-目录摘要.........................................................-2-Abstract.........................................................-3-第一章控制系统原理.....................................-5-1.1工艺描述...........................................................................................................................-5-1.2控制要求...........................................................................................................................-5-1.3要求实现系统基本功能..................................................................................................-6-1.4传感器选择......................................................................................................................-6-1.5执行机构的选择........................................................................................................-8-1.6差压变送器................................................................................................................-8-第二章详细设计.........................................-9-2.1硬件设计.................................................................................................................................-9-2.1.1选择计算机机型与现场总线......................................................................................-9-2.1.2流量变送及A/D电路...................................................................................................-9-2.1.3D/A转换及隔离输出电路...........................................................................................-11-2.1.4键盘显示接口与设计..................................................................................................-12-（1）键盘选择.....................................................................................................................-12-（2）LED显示器.................................................................................................................-13-（3）键盘接口电路.............................................................................................................-14-2.2软件设计.................................................................................................................................-15-2.2.1系统主程序流程图.....................................................................................................-15-2.2.2编写数字调节器软件模块；...............................................................................................-16-2.2.3编写A/D转换器处理程序模块；......................................................................................-17-2.2.4编写输出控制程序模块；...................................................................................................-19-第三章系统调试........................................-21-3.1差压式流量变送器量程调整..................................................................................................-21-3.2给定参数设定..........................................................................................................................-21-3.3采样周期的调整......................................................................................................................-21-3.4PID参数的整定.........................................................................