RRA/CMC tool fails

[Aya Alwan]

Hello,

I have been struggling to get the RRA/CMC steps to work (OpenSim 4.5). I'm attaching all input files for reference. I have not changed the default xml files (tasks, actuators, and constraints) that are available within the installed OpenSim gait2354 folder. The CMC tool works without the external loads file but generates an error when I add it.

Time range: 10.9533-12.04

kinematics .mot file
https://buckeyemailosu-my.sharepoint.co ... w?e=TJakBI

GRF .mot file
https://buckeyemailosu-my.sharepoint.co ... Q?e=lZDXgM

GRF .xml file
https://buckeyemailosu-my.sharepoint.co ... A?e=3DFzXr

model .sto file
https://buckeyemailosu-my.sharepoint.co ... w?e=jI6tJT

The error I get is: Tool execution failed or canceled by user. Output files were not written.

CMC::computeControls, t = 10.9533
SimTK Exception thrown at InteriorPointOptimizer.cpp:265:
Optimizer failed: Ipopt: Infeasible problem detected (status 2)
OPTIMIZATION FAILED...
CMC::computeControls: Optimizer could not find a solution.
Unable to find a feasible solution at time = 10.9533.
Model cannot generate the forces necessary to achieve the target acceleration.
Possible issues: 1. not all model degrees-of-freedom are actuated,
2. there are tracking tasks for locked coordinates, and/or
3. there are unnecessary control constraints on reserve/residual actuators.

Thank you!

Aya

[Mohammadreza Rezaie]

Hi, the answer in this post may help: viewtopicPhpbb.php?f=91&t=18226&p=0&sta ... 2e47da2b71
Also, I noticed that your ground reaction forces are so noisy:

Screenshot 2024-06-12 011617.jpg (50.78 KiB) Viewed 221 times

You may want to apply some smoothing.
Hope this helps.