A platform with six degrees of freedom

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1、371APLATFORMWITHSIXDEGREESOFFREEDOMByD.Stewart*Thispaperdescribesamechanismwhichhassixdegreesoffreedom,controlledinanycombinationbysixmotors,eachhavingagroundabutment.Itisconsideredthatbyitsparticulararrangement,thismechanismmayformanelegantdesignforsimulatingflightconditi

2、onsinthetrainingofpilots.Unlikemostsimulators,ithasnofixedaxesrelativetotheground,andthereforewithinthelimitsofamplitudeofthedesignitcantrulysimulatetheconditionsofbankingbycarryingthesimulationofcontrolsurfacesintotheaxesofthenewattitude.Variationsincontrolarrangementsare

3、describedandtheirrespectivedesignmeritsconsidered.Otherpossibleusesforthismechanismarementioned,includingautomationofproduction.INTRODUCTIONInthispaperamechanismisdescribedwhichitisINTHESEARCHforasuitablemeansforsimulatingflightsuggestedmaybeused:conditionsforthesafetraini

4、ngofhelicopterpilots,the(a)Asavehicleforrepresentingabodyinspacedesignofamechanismhasbeenestablishedhavingallthesubjectedtoalltheforceswhichmaybemetwithinitsfreedomsofmotionwithinthedesignlimitationsofvoyage.amplitudeandcapableofbeingcontrolledinallofthem(6)Asrepresentinga

5、platformheldstationaryinsimultaneously.Aresultofthisexercisehasbeentoreleasespacemountedonavesselsuchasashipwhichistheimaginationtoconceivemanyotherusesforsuchasubjectedtotherandommovementsofthesea.mechanism.(c)AsaplatformforsimulatingtheactionsoftheModerndevelopmentsinpas

6、sengertransport,whetherhelicopterasdrivenbyitspilot,ortheyareinair,seaorspace,havesubjectedmantomixed(d)Asasupportforahelicopterwhichiscapableotaccelerationsbeyondanypreviouslyknown.Theeffectofbeingdrivenbythepilot,randomactionsbeingappliedspeedonthereactionsofahumanbeinga

7、renegligibletothesupportingplatformasprescribed.comparedwiththosecausedbythechangeofdirection(e)Asanyvehiclewhichissubjecttocontrolbyaorspeedandwhenahumancontrollinkisintroducedintohumanbeing.acontrolchain,theeffectofaccelerationuponhisactions(f)Asabasisofdesignforanewform

8、ofmachineisofgreatimportance.tool.Itisdangeroustoassumetheperformanceofacomplex(g)Asabasi