Checking Reserve Actuator Activity

[Ryan Chhiba]

This may be a dumb question, but from my understanding, you should be able to see the force of the reserve actuators in the force.sto file outputted during Static Optimization. Based on the headers there are muscle forces, offset forces, joint movements, and the external forces. How do you know which one refers to the reserve actuators?

[Mohammadreza Rezaie]

Hi, the names of the reserve actuators are specified in your actuator file, or in your model's forceset.
Here is an example of an actuators file in Rajagopal2016 model: https://github.com/opensim-org/opensim- ... rs.xml#L99
And this is the model's coordinate actuators:

Untitled.png (18.28 KiB) Viewed 234 times

Based on the headers there are muscle forces, offset forces, joint movements, and the external forces.

The StaticOptimization_force and _activity files do not contain joint movements, so they are likely your reserve actuators.

Hope this helps.