I am currently using the MoBL ARMS Dynamic Model of the Upper Extremity in OpenSim v3.1 64-bit version. I am using the Inverse Dynamics Tool to calculate joint torques during a simple shoulder abduction Inverse Kinematics trial. The Inverse Dynamics torques are not matching my direct torque calculations. I checked and rechecked my calculation, but still cannot find an explanation so I am beginning to wonder if there are any known issues with the Inverse Dynamics Tool in OpenSim 3.1 or with the MoBL ARMS Dynamic Model.
Thank you,
-Tyler
OpenSim 3.1 64-bit Inverse Dynamics Check
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Tyler Richardson
- Posts: 1
- Joined: Tue Jul 12, 2011 11:39 am
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Dimitar Stanev
- Posts: 1096
- Joined: Fri Jan 31, 2014 5:14 am
Re: OpenSim 3.1 64-bit Inverse Dynamics Check
Hi,
How did you compute the torques for shoulder abduction? The shoulder joint is modeled differently in this model. Did you try to compute the moments with a simpler shoulder model (3DOF rotation)? Also, it is possible that the mass parameters are not specified correctly.
Regards
How did you compute the torques for shoulder abduction? The shoulder joint is modeled differently in this model. Did you try to compute the moments with a simpler shoulder model (3DOF rotation)? Also, it is possible that the mass parameters are not specified correctly.
Regards