造纸机的电气传动系统设计

辽宁科技大学本科生毕业设计（论文）第I页造纸机的电气传动系统设计摘要造纸术是我国古代四大发明之一，有着悠久的文明历史。随着日常生活对纸张品质要求的不断提高，造纸机也正向着大型、高速、高效的方向迅速发展，这就对造纸机的电气传动系统提出了更加严格的要求。面对日趋激烈的市场竞争，我国造纸业已经步入“质量效益主导型”的新阶段，其中造纸机的电气传动控制系统作为保障纸张质量的关键技术，已经引起了我国造纸企业的高度重视。首先，本文对造纸机电气传动系统的国内外发展现状做了简要的介绍，并介绍了造纸机的机械结构以及造纸的工艺流程。接着，详细的分析了速度链、负荷分配以及纸幅张力等影响电气传动控制系统的诸多因素，并给出了造纸机对电气传动控制系统的基本要求。通过对电气传动控制系统工艺的进一步分析，计算了影响电气传动品质的相关参数。同时给出了速度链、动态负荷、张力需求的计算公式以及电机电磁转矩的离散化方程。最后，根据交流变频调速系统的应用，给出了造纸机在实际应用中变频器的相关参数及变频器的选型并对造纸机电气传动控制系统进行了合理的设计。关键词：造纸机；电气传动控制；速度链；张力控制；交流变频调速;变频器辽宁科技大学本科生毕业设计（论文）第II页THEDESIGNOFPAPERMACHINEELECTRICALDRIVINGSYSTEMABSTRACTPaper-makingtechniqueisoneofancientChina'sfourgreatinventions,hasalonghistoryofcivilization.Withtheincreasingdemandforpaperquality,papermachinetowardsthedevelopmentoflarge-scale,high-speed,efficientdirection,whichalsoputforwardhigherrequirementsforpapermachinecontrolsystem.Withincreasinglyfiercemarketcompetition,Chinesepaperindustryhasstartedtoenterintoanewdevelopmentstageof“qualityandefficiency-oriented”.Andthepapermachineelectricaldrivingcontrolasthepaperqualityprotectiontechnology,hasbeenwidelyfavoredbythepapercompaniesathome.First,thearticlemadeapresentationonthepapermachinecontrolsystemdevelopmentintheworld.Atthesametime,introducesthemechanicalstructureandthetechnologicalprocessofpapermaking.Thenanalyzedthespeedchain,loaddistributionandpapertensiononthedrivingcontrolsystemandmanyfactorsoftheinfluenceoftheelectricaldrivecontrolsystem,andgivethebasicrequirementsoftheelectricdrivecontrolsystem.Inthisthesisanalyzedthetheoreticaltransmissionparametersofthedrivingsystem,calculatedalltherelevantfactorsaffectingthetransmissionqualitytoachieveagoodcontroleffect.Atthesametime,thespeedlink,thedynamicloadandthetensiondemandarecalculated,andtheelectromagnetictorqueofthemotorisdiscretized.Finally,accordingtotheapplicationofACvariablefrequencyspeedcontrolsystem,thecorrelationparametersoftheinverterandtheconverterselectionoftheinverterinpracticalapplicationaregiven.Andthepapermakesareasonabledesignfortheelectricdrivecontrolsystemofpapermachine.Keywords:Papermachine;Electricdrivecontrol;Speedchain;Tensioncontrol;ACfrequencyconverter;Frequencyconverter辽宁科技大学本科生毕业设计（论文）第I页目录摘要............................................................................................................................................IABSTRACT............................................................................................................................II1绪论.....................................................................................................................................11.1课题研究背景...........................................................................................................11.2造纸机电气传动控制系统国内外的研究现状及已有成果...................................21.3本文主要工作...........................................................................................................32造纸机机械结构及造纸工艺流程.............................................................................52.1造纸机机械结构.......................................................................................................52.1.1造纸机网部....................................................................................................62.1.2造纸机压榨部................................................................................................62.1.3造纸机压光部................................................................................................62.1.4造纸机干燥部和卷取部................................................................................62.2造纸工艺流程...........................................................................................................62.3本章小结...................................................................................................................73造纸机电气传动控制策略分析.................................................................................83.1造纸机电气传动概述...............................................................................................83.1.1造纸机电气传动控制系统的基本要求........................................................83.1.2造纸机传动功率计算....................................................................................83.1.3造纸机生产能力计算....................................................................................93.2造纸机电气传动系统控制策略分析.......................................................................93.2.1速度链控制....................................................................................................93.2.2负荷分配控制..............................................................................................103.2.3纸幅张力控制..............................................................................................113.3造纸机电气传动控制工作原理图.........................................................................123.4本章小结.................................................................................................................144造纸机电气传动控制系统参数分析......................................................................154.1纸辊电机电磁转矩计算....................................................