毕业设计（论文）造纸厂配浆控制系统——控制程序设计专业年级学号姓名指导教师评阅人自动化2003级03051101赵海娜钱艳平袁晓玲二○○七年六月中国·南京摘要摘要造纸工业是一个与国民经济发展和社会文明建设息息相关的重要产业。配浆系统是整个造纸工艺流程的重要组成部分。为了达到配浆系统给定的工艺要求，保证纸浆的产量和质量，必须对配浆系统进行自动化改造。同时，该系统可以充分提供配浆系统的各种生产数据，为生产工艺的改进、管理水平的提高创造条件。本文研究了造纸工业中纸浆配比自动控制系统。整个系统结构可以分为监控程序、基于组态软件DDCRun的控制程序与硬件及接口程序三层结构，三者相对独立运行。本文着重研究配浆系统中控制程序的设计和实现。在分析了整个系统需求的基础上提出了系统的控制目标和策略，主要包括绝干量配比控制、浓度控制和液位及联锁控制等。同时，利用动态链接库技术，将上述控制策略分解为各种算法模块并采用VisualC++语言实现。基于自编的组态软件DDCRun，实现了纸浆配比系统中的控制程序。首先，利用算法添加程序将各种算法添加到组态软件中以组成算法库；其次，利用策略组态程序搭建了配浆系统的整个控制策略；最后，采用策略执行程序以运行配浆控制策略。最后，结合本次毕业设计过程讨论了存在的不足和体会。关键词：纸浆；绝干量；配比控制；动态链接库；软件组态；DDCRunIAbstractAbstractThepaperindustryistheimportantindustrywhichiscloselylinkedwiththenationaleconomydevelopmentandthesocialcivilizationconstruction.Proportioningsystemisanimportantconstituentportionoftheentirepapermakingtechnicalprocess.Inordertoachievethetechnologicalrequirementwhichtheproportioningsystemrequires,ensuretheoutputandthequalityofthepaperpulp,theproportioningsystemmustcarryontheautomatedtransformation.Meanwhilethissystemmayfullyprovideallkindsofproductiondataoftheproportioningsystem,creatingconditionsfortheimprovementofproductionprocess,andtheenhancementofthemanagementlevel.Thisarticlehasstudiedthepaperpulpproportioningautomaticcontrolsysteminthepaperindustry.Thewholesystem’ssoftwarestructuremaybedividedintothreestructureswhicharethemonitorroutine,basedontheconfigurationsoftwareDDCRuncontrolprocedureandthehardwareandtheinterfaceroutine.Thethreerelativeindependentlyoperates.Thisarticlehasemphaticallystudiesthecontrolprocedure’sdesignandrealizationintheproportioningsystem.Basedontheanalysisoftheneedsoftheentiresystem,proposesthesystem'scontrolobjectivesandstrategies,mainlyincludedthedrycomponentratiocontrol,densitycontrol,liquidlevelandinterlockcontrol,andsoon.Meanwhile,usingtheDynamic-LinkLibrarytechnology,dividestheabovecontrolstrategiesintovariousalgorithmmodulesandusesVisualC++torealizethesealgorithmmodules.Basedontheconfigurationsoftware,DDCRun,whichisdesignedoneself,achievesthecontrolprocedureinthepaperpulpproportioningsystem.Atfirst,usesalgorithmaccessionprogrammetoaddvariousalgorithmstotheconfigurationsoftware,composingalgorithm-base;Next,usesthestrategyconfigurationproceduretobuildupthewholecontrolstrategyoftheproportioningsystem;Atlast,usesthestrategyexecutiveroutinetoruntheproportioningsystem.Attheendofthearticle,discussestheexistentinsufficiencyandexperience,combiningwiththeprocessofgraduationproject.Keywords:paperpulp;drycomponent;ratio-control;softwareconfiguration;DDCRunII目录目录摘要............................................................................................................................................IAbstract..............................................................................................................
