Hello, I would like to run a forward dynamics simulation to confirm that a torque profile results in the expected motion. The torque magnitude and axis of application are both time-dependent. Using a TorqueActuator and Controller should allow me to obtain the correct time-dependent magnitude, but I ...

Hi Ana,
I'm having the same issue. Were you able to find a solution?

Thanks,
Melanie Hook

Hello, I am trying to use this plug-in (https://simtk.org/plugins/phpBB/indexPhpbb.php?group_id=1357&pluginname=phpBB) to add contact elements to the foot of the gait2392 model. I modified the code from the example files provided with the plug-in and appended it to the forces section by editing the ...

Hello, I am trying to add the ContactPointOnPlane elements to the foot of the gait2392 model but I keep getting this error message when trying to load the model into OpenSim. image (1).png The only change that I made to the original osim file was to add the code from the example file (see below) to ...

Hello,
I am also in need of a CMC setup file for the LFB model for my research. Is it available? I attempted to create one manually but the simulation keeps failing and I am not sure why.Thank you so much!

Melanie Hook
melaniehook@vt.edu

Hi everyone, I have been trying to run inverse dynamics without external loads using the Matlab API. I got it to successfully output the generalized forces/torques but I would like the body forces/torques instead. The documentation for the InverseDynamicsTool makes it seem like this is possible, but...

Hi Quinten, Thank you so much for your response! I am still confused by the coordinate system conventions. Could you please explain the difference between the forces/moments at the pelvis vs at the ground-pelvis joint? The variables that OpenSim inverse dynamics have been providing are pelvis_tx_for...

Hi everyone, Could someone please explain the coordinate system for the moments and forces computed by inverse dynamics? I'm trying to understand where the residuals at the pelvis are coming from. I think the forces (pelvis_tx_force, pelvis_ty_force, and pelvis_tz_force) are expressed in the global ...

Hello everyone, I have been trying to predict ground reaction forces and moments during walking gait using the zero moment point method described in this paper: https://www.sciencedirect.com/science/article/pii/S0021929015005278. In the paper, they run ID without ground reaction forces applied then ...