gyroscope_-_wikipedia

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1、Gyroscope-Wikipedia,thefreeencyclopediaMakeadonationtoWikipediaandgivethegiftofknowledge!GyroscopeFromWikipedia,thefreeencyclopediaAgyroscopeisadeviceformeasuringormaintainingorientation,[1][2]basedontheprinciplesofangularmomentum.Thedeviceisaspinningwheelordiskwhoseaxleisfreetotakeanyorientation.T

2、hisorientationchangesmuchlessinresponsetoagivenexternaltorquethanitwouldwithoutthelargeangularmomentumassociatedwiththegyroscope'shighrateofspin.Sinceexternaltorqueisminimizedbymountingthedeviceingimbals,itsorientationremainsnearlyfixed,regardlessofanymotionoftheplatformonwhichitismounted.Agyroscop

3、eContents1Descriptionanddiagram2History3Properties4Gyrostat5U.S.Patents6Seealso7References8ExternalarticlesandfurtherreadingsDescriptionanddiagramWithinmechanicalsystemsordevices,aconventionalgyroscopeisamechanismcomprisingarotorjournaledtospinaboutoneaxis,thejournalsoftherotorbeingmountedinaninner

4、gimbalorring,theinnergimbalbeingjournaledforoscillationinanoutergimbalwhichinturnisjournaledforoscillationrelativetoasupport.Theoutergimbalorringismountedsoastopivotaboutanaxisinitsownplanedeterminedbythesupport.Theoutergimbalpossessesonedegreeofrotationalfreedomanditsaxispossessesnone.Theinnergimb

5、alismountedintheoutergimbalsoastopivotaboutanaxisinitsownplane,whichaxisisalwaysDiagramofagyrowheel.Reactionperpendiculartothepivotalaxisoftheoutergimbal.arrowsabouttheoutputaxis(blue)correspondtoforcesappliedaboutTheaxleofthespinningwheeldefinesthespinaxis.Theinnergimbaltheinputaxis(green),andvice

6、possessestwodegreesofrotationalfreedomanditsaxispossessesone.versa.Therotorisjournaledtospinaboutanaxiswhichisalwaysperpendiculartotheaxisoftheinnergimbal.So,therotorpossessesthreedegreesofrotationalfreedomanditsaxispossessestwo.Thewheelrespondstoaforceappliedabouttheinputaxisbyareactionforceaboutt

7、heoutputaxis.106/25/200812:01Gyroscope-Wikipedia,thefreeencyclopediaThebehaviourofagyroscopecanbemosteasilyappreciatedbyconsiderationofthefrontwheelofabicycle.Ifthewheelisleanedawayfromtheverticalsothatthet