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MODELLING AND CONTROL STRATEGY OF ROBOTIC YO-YO(2)

时间:2025-07-09   来源:未知    
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ABSTRACT- In the paper we address a problem of controlling an oscillating motion with a robot. As the object we have selected a yo-yo. Yo-yo is a toy made of two discs connected with a short thin axle, which can be moved up and down by moving a string tied

Figuresystem1:Elite

MeasurementofYo-yomotionwithopticalFigurestring2:3Dpositionsoftheyo-yoselfmotion–becauseisoftherigidlyvisionrestrainedsystemcould(thetrajectoriesnotarebrokenthetheverticalmarkersaxis)

duetotherotationoftracetheyo-yothepositionsaroundFigurewhenhuman3:Verticalisplayingpositionstheyo-yo.

oftheyo-yoandthehandattachedmeasuredtotheaxleoftheandtwoabya6-dimensionalyo-yo.force/torqueTheforcessensorhavebeenJR3aretheshownstringsPCcomputerinwhichFigs.differ(see.5andinFig.4).Wehavecompared6.theirWeelasticity.

canseeTheresultsratheryo-yoever,whensmallreachesthe(proportionalthebottompositionthethatforcesbeforeareyo-yoreachestothetheyo-yobottomweight).positionHow-an

Force sensor

Figure4:Experimentalsetupforforcemeasurement

Figurethestring5:Tensionisnotelastic.

inastringattachedtoyo-yoaxle—Figurethestring6:Tensionismoreelastic.

inastringattachedtoyo-yoaxle—impacttheoccurs.Aftertheimpactashortperiodwhenfree)string guresfollowedisnotbyunderasmallertensionimpact.happens(yo-yois yingforcetheiswegreatercanseewhenthattheamplitudeComparingoftheimpactbothtic.free yingperiodisthelongerstringwhenisnottheelasticandthatonlyAsterbythethemotionoftheyo-yocanstringbecontrollediselas-thethatthestringthemotionshouldstringofthetopendofthestring,itisbet-notisalwaysbeextensible.undertension.Therefore,MODELLINGOFYO-YO

Inbygeneralfreedomastringaattachedyo-yoistoait.freeActually, yingitobjectconstrainedofmotionayo-yo(DOF)isveryandcomplicated.acompletemathematicalhas6degrees-of-modelbalance.ofkineticenergyWhenyo-yoitisessentialHowever,toobservetothemodelenergytheisyo-yoconvertedisbouncingtopotentialupandanddown,vicever-

the

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