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《4 Modeling and Control of Vibration in Mechanical Systems文稿》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、powerisrequiredfortheisolatortoperformitsfunction.Apassiveisolatorconsistsisolationsystemissaidtobeactiveorpassivedependingonwhetherornotexternalthesystemisachievedunderspeci?edconditionsofvibrationexcitation[4].Anmassandthesourceofvibrationsothatareductioninthedynamicrespon
2、seofinvolvestheinsertionofaresilientmembercalledanisolatorbetweenthevibratingVibrationisolationmethodsareusedtoreducetheundesiredeffectsofvibration.It4.2.1Isolators4.2Passivecontroledgeofhelicopterblades,etc.walls,(3)dampingoutvibrationsusingpiezoelectricdevicesinstalledonth
3、etrailingbyattenuatingthevibrationofthelargepanelsofthinmetalthatformthecabinbuildingswaycausedbywindandseismicwaves,(2)reducingaircraftcabinnoisehybridmassdamperstoapplyacontrolforcetoamovablemasssoastoreducetoperformitsfunction.Examplesofsomeactivevibrationcontrolinclude,(
4、1)usingchapter.isolators,andabsorbers.Someofthetechniqueswillbeintroducedbrie?yinthiscatingmachine,controlofnaturalfrequency,dampingandstiffnessmodi?cation,vibrationreductionhavebeenpresented,suchasbalancingofrotatingandrecipro-facturingcost.Variousclassicaltechniquesofvibra
5、tioncontrolforthepurposeofacompromisebetweenanacceptableaminvolvedineliminatingvibration,reductionofvibrationispreferredsoastoachieveeliminatedtheoretically.However,duetothehighmanufacturingcostthatmaybetioningperformance,andhumanpainanddiscomfort.Vibrationscansometimesbemec
6、hanicalfailure,frequentandcostlymaintenanceofmachines,worseningposi-Thepresenceofvibrationoftenleadstoundesirableeffectssuchasstructuralor4.1IntroductionClassicalVibrationControl4Anactivevibrationcontrolisrequiredforasystemifitneedsanexternalpowerountofvibrationandareasonabl
7、emanu-63tuned.Theprincipleistousethekineticenergyintheresonantmasssystem,wheresourceofvibrationswhichwillcancelouttheoriginalvibrationifitiscorrectlyanti-vibrationsystemsnearthevibrationsource.ThemainideaistocreateanotherResonatorsareusedincertaincaseswhereitiseasierandmoree
8、f?cienttolocate4.2.3Resonatorsfrequencies,adampeddynamicvibrationabsorberca
