内高压成形液压机控制系统的研究与实施

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1、上海交通大学硕士学位论文内高压成形液压机控制系统的研究与实施姓名：王陈喜申请学位级别：硕士专业：机械电子工程指导教师：刘利20060201上海交通大学硕士学位论文摘要本文最后对液压机的控制方案进行了实验论证，实验结果分析表明上述系统控制方案合理可行。侧缸推力、位移和增压系统均能正常工作，并且能够使三个控制量之间协调工作；两侧缸的位置同步控制效果良好。该液压机成功完成了内高压胀形工艺过程，各项控制指标都达到用户要求。关键词：内高压成形，位置同步控制，高压密封控制量协调II上海交通大学硕士学位论文ABSTRACTRESEARCHANDIMPLEMENTOFTHECON

2、TROLSYSTEMOFINTERNALHIGH-PRESSUREFORMINGEQUIPMENTABSTRACTInternalHigh-pressureForming(IHF)isametalformingprocessthatusehydraulicpressuretoformtheparts.It'snotonlyourpurposetoreduceweight,savematerials,butoneofdevelopmenttrendsofmodernmanufacturetechnology.Inrecentyears,becauseofcostso

3、fthefuelandrawmaterialsandstrictrestrictofexhaustgasemissionbyenvironmentprotectionlaws,thelightweightofthecarsisincreasinglyimportant.Besidesusinglightmaterials,theotherimportantwaytoreduceweightistousehollowmaterialsinsteadofsolidmaterials,thatistosay,forthepartstoloadbendingandtors

4、ionload,itisnotonlytoreduceweightandsavematerial，butalsomakethebestoftheintensionandstiffnessofthematerials,Basedonthisbackground,wedevelopthenewprocesswithwidedevelopmentforegroundInternalHigh-pressureFormingprocesswhichcanreduceweightandsavematerialandenergy.Afterconsultingnumerousr

5、elatedliteraturesandreferencematerialsathomeandabroad,thedevelopmentandapplicationandcurrenttrendofdomesticandoverseaofIHFissummarizedinthispaper.Inthemeantime,principleandcompositionofIHFequipmentisintroducedandbrieflyaddressed.CharacteristicsofpressureintensifiersystemofIHFIII上海交通大学

6、硕士学位论文ABSTRACTequipmentareanalyzed.AndsummarizeautomaticcontrolsystemofIHFequipment,andelectro-hydraulicproportionalcontroltechnology.Themathematicalmodelofsynchronoussystemofhighaccuracypositionisbuiltinthispaper.Severalcontrolstrategiesareintroducedinthispapertoanalyzethecharacteris

7、ticsofthesystemincludingthePIDcontrolstrategiesandsomeotherreformativePIDstrategies.Bycontrast,thePIDcontrolstrategyisthemostsuitableforthesystemandfinallyadopted.Thepaperalsodesignsandanalyzesthehardware,introducethecontrolsoftwareusedbyVisualC++,whichhaverelativelyperfectfunctionand

8、arede