正负刚度并联扭转减振器电液伺服控制研究

正负刚度并联扭转减振器电液伺服控制研究正负刚度并联扭转减振器电液伺服控制研究

摘要：

在复杂的机械系统中，振动控制是一个重要的研究领域。减振器是一种有效的振动控制装置，特别是在工程机械、航空航天等领域中得到广泛应用。本文提出了一种基于电液伺服控制的正负刚度并联扭转减振器，旨在通过改善系统的刚度特性、结构设计和控制算法，实现系统的振动控制。首先，对振动控制研究的背景和现状进行了概述，然后介绍了减振器的结构和工作原理，包括其正负刚度的特性和并联结构，然后详细介绍了减振器的电液伺服控制系统，包括控制的硬件和软件部分，最后进行了相关试验，结果表明，该减振器可以有效地减少振动，并具有良好的控制性能。

关键词：减振器，正负刚度，并联结构，电液伺服控制，振动控制

Abstract:

Incomplexmechanicalsystems,vibrationcontrolisanimportantresearcharea.Vibrationdampersareaneffectivevibrationcontroldevice,especiallyinthefieldsofengineeringmachineryandaerospace.Thispaperproposesapositiveandnegativestiffnessparalleltwistvibrationdamperbasedonelectro-hydraulicservocontrol,aimingtoimprovethestiffnesscharacteristics,structuraldesign,andcontrolalgorithmofthesystemtoachievevibrationcontrol.First,thebackgroundandcurrentsituationofvibrationcontrolresearchareoutlined,andthenthestructureandworkingprincipleofthedamperareintroduced,includingitspositiveandnegativestiffnesscharacteristicsandparallelstructure.Then,theelectro-hydraulicservocontrolsystemofthedamperisdescribedindetail,includinghardwareandsoftwarecontrolparts.Finally,relevantexperimentsareconducted,andtheresultsshowthatthedampercaneffectivelyreducevibrationandhasgoodcontrolperformance.

Keywords:vibrationdamper,positiveandnegativestiffness,parallelstructure,electro-hydraulicservocontrol,vibrationcontroVibrationisacommonphenomenoninmechanicalsystems,whichcancausealotofproblemssuchasnoise,fatigue,andevendamagetothesystem.Vibrationdampersarewidelyusedtoaddressthisissue.Amongvarioustypesofdampers,apositiveandnegativestiffnessdamperwithaparallelstructurehasdrawnincreasingattentionduetoitsexcellentperformanceinreducingvibration.

Thepositiveandnegativestiffnesscharacteristicreferstothefactthatthedampercanprovidebothpositiveandnegativestiffness,whichmeansthatitcannotonlydampenvibrationsbutalsocontributetothestabilityofthesystem.Theparallelstructuremeansthatthedamperisconnectedinparallelwiththesystem,whichallowsittoabsorbenergyfromthesystemmoreefficiently.

Theelectro-hydraulicservocontrolsystemisthecoreofthedamper,whichconsistsofhardwareandsoftwarecontrolparts.Thehardwarecontrolpartincludesthecontrolvalve,pressuresensors,anddisplacementsensors,whichareresponsibleforadjustingthehydraulicpressureandmonitoringthesystem'sdisplacementandpressure.Thesoftwarecontrolpartincludesthecontrolalgorithmandcontrolsystem,whichprovidereal-timecontrolsignalstothehardwarecontrolpartbasedonthesystem'svibrationstatus.

Toverifytheeffectivenessofthedamper,relevantexperimentshavebeenconducted.Theresultsshowthatthedampercaneffectivelyreducevibrationinawidefrequencyrangeandhasgoodcontrolperformance.Inaddition,thedampercanbeoptimizedandcustomizedaccordingtothespecificneedsandcharacteristicsofthesystem,whichmakesitaflexibleandpracticalsolutionforvibrationcontrol.

Insummary,thepositiveandnegativestiffnessdamperwithparallelstructureandelectro-hydraulicservocontrolsystemisapromisingsolutionforvibrationcontrol.Itnotonlyprovideseffectivevibrationdampingbutalsoenhancesthestabilityandperformanceofthesystem.Withfurtherdevelopmentandoptimizations,thisdampercanbeappliedinvariousfieldsandindustriestoimprovethequalityandsafetyofmechanicalsystemsAdditionalInformation:

Oneoftheadvantagesofthepositiveandnegativestiffnessdamperwithaparallelstructureisitssimplicityandeaseofimplementation.Itcanbeeasilyintegratedintoexistingmechanicalsystemswithoutrequiringsignificantmodificationsorredesigns.Moreover,thedampercanbetailoredtomeetspecificrequirementsandconstraints,suchasspacelimitations,weightrestrictions,anddurabilityconcerns.

Anotherbenefitofthepositiveandnegativestiffnessdamperwithelectro-hydraulicservocontrolisitsadaptabilityandversatility.Thesystemcanbeadjustedandoptimizedtoaddressvarioustypesofvibrations,suchasharmonic,random,shock,andtransientvibrations.Itcanalsoaccommodatechangesinoperatingconditions,suchasloadvariations,temperaturefluctuations,andenvironmentaldisturbances.

Thepositiveandnegativestiffnessdamperwithelectro-hydraulicservocontroloffersseveralpotentialapplicationsinengineeringandtechnology.Someexamplesinclude:

1.Aerospaceandaviation:Thedampercanbeusedtoreducevibrationsinaircraftengines,wings,landinggear,andothercomponents,improvingsafety,comfort,andperformance.

2.Automotiveandtransportation:Thedampercanbeinstalledincars,trucks,trains,andothervehiclestominimizevibrationscausedbyroadconditions,engineandbrakingsystems,andpassengermovement.

3.Manufacturingandindustrialprocesses:Thedampercanbeutilizedinmachinery,robots,andproductionlinestopreventexcessivevibrationsthatcancausedamagetoequipment,reduceefficiency,andcompromiseproductquality.

4.Medicalandhealthcare:Thedampercanbeappliedinmedicaldevices,suchasMRImachines,ultrasoundequipment,andsurgicaltools,toreducevibrationsthatcanaffectaccuracyandreliability.

5.Sportsandentertainment:Thedampercanbeincorporatedintosportsequipment,suchasbicycles,skis,andtennisrackets,toimproveperformanceandreducefatigue.

Inconclusion,thepositiveandnegativestiffnessdamperwithparallelstructureandelectro-hydraulicservocontrolsystemisapromisingsolutionforvibrationcontrol.Itsuniquedesignandadaptivecapabilitiesmakeitsuitableforawiderangeofapplications,fromaerospaceandautomotiveindustriestomedicalandsportsfields.Withfurtherresearchanddevelopment,thisdamperhasthepotentialtorevolutionizethewaywedealwithvibrationsandenhancethesafety,comfort,andefficiencyofmechanicalsystemsTheadaptivestiffnessdamperwithparallelstructureandelectro-hydraulicservocontrolsystemisahighlysophisticatedtechnologythatcanefficientlycontroltheundesiredmechanicalvibrations.Theparallelstructureofthedamperunitallowsittogeneratehighlevelsofdampingforceswhilemaintaininglowhydraulicpressure.Theelectro-hydraulicservocontrolsystemwithitsfastandaccurateresponse,isresponsibleforcontrollingthedampingforceofthedamper,makingitsuitableforawiderangeofapplications.

Oneofthesignificantadvantagesofthisdamperisitsabilitytoadapttochangingvibrationconditions.Thedampercandynamicallyadjustitsstiffnessanddampingpropertiestoaccommodatedifferentfrequencies,amplitudes,andmodesofvibration,makingitidealforapplicationsthatexperiencemultiplevibrationsources.

Anotheradvantagecomesfromitslowpowerconsumption.Theparallelstructureofthedamperunitmakesiteasytomaintainlowhydraulicpressurewhilegeneratinghighdampingforces,resultinginamoreefficientuseofenergywhileminimizingheatgeneration.

Thedesignoftheadaptivestiffnessdamperalsomakesithighlyconfigurable,withtheabilitytotunethestiffnessanddampingbehaviortomeetspecificapplicationrequirements.Thisflexibilityallowsdesignerstooptimizethestructurefordifferentenvironments,suchasshockandvibrationdampinginaerospaceandautomotiveapplicationsorprecisionvibrationdampinginmedicalandsportsfields.

Despiteitsmanyadvantages,thecostofmanufacturingtheadaptivestiffnessdamperishigherthantraditionaldampingsystems.However,withadvancementsinmanufacturingtechniquesandeconomiesofscale,thecostofproductionisexpectedtocomedown,makingitmoreaccessibletoabroaderrangeofin