SCONE is a software tool for predictive simulations of biomechanical movement. It uses OpenSim for modeling and simulation, and performs optimization using various control strategies, including feed-forward control, proprioceptic feedback control, and bal
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Adrián Schmedling
- Posts: 13
- Joined: Tue Dec 06, 2022 11:36 am
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by Adrián Schmedling » Sat Mar 25, 2023 7:00 pm
Hi, I'm trying to create a standing balance model, like the one in the tutorial 3, but with more complex model that I have found on OpenSim forums.
The problem happens when I optimize the scenario and the ankles bend up (see images attached). I tried to change the DoF of the model, reducing the free movements of the ankles; also I tried to add a point-on-line constraint on the toes or add a DoFMeasure to force the ankles to keep their original position, but nothing works.
Any idea why this happens or how to solve it?
- Captura de pantalla 2023-03-26 034752.png (139.35 KiB) Viewed 180 times
- Captura de pantalla 2023-03-26 034834.png (134.88 KiB) Viewed 180 times
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Thomas Geijtenbeek
- Posts: 428
- Joined: Wed Mar 12, 2014 8:08 am
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by Thomas Geijtenbeek » Fri Mar 31, 2023 1:18 am
Sorry for the late response!
It appears that there is no CoordinateLimitForce for the ankle coordinates. These are required to make sure they stay in the proper range.
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Adrián Schmedling
- Posts: 13
- Joined: Tue Dec 06, 2022 11:36 am
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by Adrián Schmedling » Fri Mar 31, 2023 8:48 am
Thanks it works fine now. I have other more complex model without the CoordinateLimitForce and it works, but I don't know why this more simple model needs it.