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ID:14603384
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页数:4页
时间:2018-07-29
《磁流变阀控制应用程序的设计》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、发展和绩效评价的一个了磁流变阀控制应用程序的设计JariT.Kostamo工程设计与生产部门托大学医学院的科学和技术Espoo,02150FinlandEmail:jari.kostamo@tkk.fiEsaP.KostamoDepartmentofEngineeringDesignandProductionAaltoUniversitySchoolofScienceandTechnologyEspoo,02150FinlandEmail:esa.kostamo@tkk.fiJyrkiT.KajasteDepartmentofEngineeringDesi
2、gnandProductionAaltoUniversitySchoolofScienceandTechnologyEspoo,02150FinlandEmail:jyrki.kajaste@tkk.fiMattiT.PietolaDepartmentofEngineeringDesignandProductionAaltoUniversitySchoolofScienceandTechnologyEspoo,02150FinlandEmail:matti.pietola@tkk.fiABSTRACTMagnetorheologicalfluidsareof
3、tenproposedforapplica-tionsrequiringfastresponseandgoodcontrollabilitybutthedy-namiccharacteristicsoftheMRdevicesareseldomanalyzedindetail.Theaimofthisstudyistopresentamagnetorheologicalvalveoptimizedforfastdynamicalresponse.ThefundamentaldesigncriteriaforfastMRvalvesarediscusse
4、dandanexperi-mentalvalvedesignedforhighfrequencyactuationisanalyzed.ItisshowntheperformancefiguresgenerallyreportedforMRtechnologycanbesignificantlyimproved.Theresultsshowasteppressuredifferenceof7MPacanbecontrolledwithare-sponsetimeof0.7ms.Themaximumrateofchangeforcon-trollablepr
5、essurewasmeasuredtoachieve20.2MPainonemil-lisecond.INTRODUCTIONMagnetorheological(MR)fluidsbelongtothegroupofsmartmaterialswhoserheologicalpropertiescanbevariedbyinducingamagneticfieldtothefluid.MRfluidshaveprovenasapromisingtechnologyforsemiactivedampersandapplicationsinmotioncontr
6、olsystemshavebeenresearched.TheresponsetimeofmagnetorheologicaltechnologyiscommonlyconsideredfastandtheimportanceofgooddynamicpropertiesofMRde-vicesareemphasizedinvibrationcontrolapplications.[1–3]MRfluidsconsistofmagneticallysoftironparticlesmixedintocarrierfluidwhichcanbemineral
7、oil,forexample.Uponapplicationofamagneticfieldtheironparticlesformcolumnarstructuresalongthefieldlines.Theorientationandthemag-neticforcesbetweentheparticlescauseanincreasedapparentyieldstresstotheMRfluidandthefluidflowisresistedorre-stricted[4,5].Duetothiseffectauniquepropertytoacti
8、vefluidstechnologyisthatcontrollablevalvescanbei
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