Simulation of One Handed Handstand - University of Tennessee

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Simulation of OneHanded Handstand Thibaut De Bock BME 599 BME 599 Spring 2012

Transcript of Simulation of One Handed Handstand - University of Tennessee

Page 1: Simulation of One Handed Handstand - University of Tennessee

Simulation of One‐HandedHandstand

Thibaut De Bock

BME 599BME 599

Spring 2012

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Motivated by difficulty of achieving ll d h d d da controlled one handed stand

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Center of mass must stay within ll b dsmall boundary

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Center of mass of entire body must i l d ll b dinclude all body segments

• 130 Bodies130 Bodies

• 53 DOF53 DOF

• 156 Muscles156 Muscles

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All Bodies need mass for forward d i d li i COMdynamics and realistic COM

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Finding center of mass f iof entire system

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Hand needs contact modelcontact model to interact with 

dground

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Arrange full body into handstand i iposition

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Arrange full body into handstand i iposition

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COM Over Hand inC l PlCoronal Plane

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COM Over Hand inS i l PlSagittal Plane

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Let body bounce to find settling i iposition

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Lock body as one and see balance i h f d d i lwith forward dynamics tool

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Use Static Optimization to find i l l loptimal muscle controls

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Results from Inverse Dynamics

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Results from Inverse Dynamics

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Results from Inverse Dynamics:S i PStatic Pose

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Limitations: Hand was not modeled i di id l f fias individual free fingers

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Limitations: Body segment masses i dwere estimated

Total body mass ~ 98kg~ 215lbs

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Limitations: Model was too weak to h ld f i i i ihold for static optimization

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Limitations:Limitations: Global Global

reference frame was at the hipat the hip not hand

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Future Directions

I t th f l• Increase strength of muscles

• Set body masses a bit lower

• Incorporate hand with more DOF

• Simplify some unnecessary parts

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QuestionsQuestions