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1、powerisrequiredfortheisolatortoperformitsfunction.Apassiveisolatorconsistsisolationsystemissaidtobeactiveorpassivedependingonwhetherornotexternalthesystemisachievedunderspecifiedconditionsofvibrationexcitation[4].Anmassandthesourceofvibrationsothatareductioninthedynamicrespon
2、seofinvolvestheinsertionofaresilientmembercalledanisolatorbetweenthevibratingVibrationisolationmethodsareusedtoreducetheundesiredeffectsofvibration.It4.2.1Isolators4.2Passivecontroledgeofhelicopterblades,etc.walls,(3)dampingoutvibrationsusingpiezoelectricdevicesinstalledonth
3、etrailingbyattenuatingthevibrationofthelargepanelsofthinmetalthatformthecabinbuildingswaycausedbywindandseismicwaves,(2)reducingaircraftcabinnoisehybridmassdamperstoapplyacontrolforcetoamovablemasssoastoreducetoperformitsfunction.Examplesofsomeactivevibrationcontrolinclude,(
4、1)usingchapter.isolators,andabsorbers.Someofthetechniqueswillbeintroducedbrieflyinthiscatingmachine,controlofnaturalfrequency,dampingandstiffnessmodification,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、fficienttolocate4.2.3Resonatorsfrequencies,adampeddynamicvibrationabsorberca
