基于模糊控制的气动比例阀缸系统的位置控制

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1、苏州大学硕士学位论文基于模糊控制的气动比例阀缸系统的位置控制姓名：丁海波申请学位级别：硕士专业：机械工程指导教师：冯志华20090501ABSTRACTPneumatictechnologyiswidelyappliedinindustrymoreandmoreandisplayinginanimportantroleinautomationfieldowingtotheadvantagesofsimpleinstructure，reliableinwork，nopollutionetc．However，theinherentcharacteristicsofthep

2、neumaticsystem，suchasthecompressibilityoftheair，nonlinearofvalve，frictioncharacteristicofpneumaticcylinderandeasilyinfluencedbyenvironmentfactorsetc，greatlyincreasedthecontroldifficultyinadegree，andhardtoobtainsatisfiedperformanceofthepneumaticorientationcontrolsystem．Howtorealizepneuma

3、ticsystemrapidlyandaccuratelypositioncontrolbecomeimportantissueofPneumaticproportion／servocontroltechnology．111epresentPneumaticProportionalValveandCylinderSystemiScomposedof5／3ProportionalvalveMPYE一5-1／4—010-BandrodlesscylinderGP．25．400．PPV．A．BallmadebyFESTO．However，thepresentPneumati

4、cProportionalpositioncontrolSystemrespondsslowlyanddoesnotworksteadilyforsomecharactersofPneumaticsystem．OntheanalysisofthecharactersofProportionalValvesandRodlessCylinder．themathmodelofthesystemiSestablishedbasedontheanalysisofthecontr01systembythetheoriesofAerodynamics，continuityofmas

5、slawandNewton‘SSecondLaw．Theinfluenceofthechangingofthesystemstabilityisanalyzed．ThesystemusingtraditionalproportionandPIDcontrolisdifficulttoobtainfavorablecontroleffectsimulation．Consideringthecharacterssuchasnon—linear,timedependence，widerangeofparameterchange，thelargeouterloadinterf

6、erenceintheliquiditself,andcombiningtothecharactersandsuitableconditionsoffuzzycontrol，thePneumaticProportionalpositioncontroliscontrolledbyfuzzycontr01．W池thestudyoffuzzycontroltechnology，wedesignthewidelyusedandmatureintheoryplanarfuzzycontroller．WiththestudyofMATLABsimulate．thetraditi

7、onalcontroliScomparedtothefuzzycontr01．Finally，wefindthatthefuzzycontrolcouldachievethecontrolrequirement,andthefeasibilityandadvantageofthefuzzycontrolisexamed．Keywords：Pneumaticproportion／servocontrol，Proportionalvalve，mathmodel，fuzzycontrolIIWrittenbyHaiboDingSupervisedbyZhi