Hello all, I'm also struggling to run CMC in MoBL_ARMS_Upper_Limb_Model_OpenSim when I activate the fast optimization target, it keeps saying this: SimTK Exception thrown at interiorpointoptimizer.cpp:264: Optimizer failed: Ipopt: Not enough degrees of freedom (status -10) I've checked the model, th...

Perfect! That's exactly what I needed to know.

Thank you for all your help!

Alright, thank you!
How should I introduce the kinematics then? Running the CMC in the first place and then using the controls in a FD simulation?
If so, how do I specify it is a passive stretch in the CMC tool?

Thank you for your reply, it was really helpful. I was using a Thelen muscle but now I see why the Millard muscle model was more appropriate for my project and I already updated the whole model. However, I would recommend approaching the problem by having a motion in mind-- like elbow extension We a...

Dear community, I'm trying to perform a passive stretching in an elbow flexion. I haven't seen much information about passive stretching simulation, this is why I decided to open this topic. I have the .mot file with the forces, torques and points where the external load will be applied in every fra...

If you don't know the severity (for example, the amount each muscle contracts when it's stretched), then it seems like you could end up with a problem that cannot be solved. An analogy would be knowing the displacement of a rope in a tug-of-war but not knowing how many people are pulling each end. ...

Thank you for your reply! We don't have real data from the patients yet, but the project is meant to work with patients with spasticity and evaluate them. Our main goal is to represent the real behaviour of our subjects, in order to classify the severity of the disorder of each one and give that inf...

Hello Mr. Uchida, I've implemented a new C++ class to apply the spastic behaviour to our muscles. My intention is to use CMC to get excitation values from a real movement and my class should modify those excitations in the case the muscle is spastic. I was wondering which method should I call from m...

depending on your research question and what exactly you are trying to capture in the model For the moment we are just trying to get joint coordinates values (after the modification) to compare them with the ones detected in the real patient, that's why I first started working with Forward Dynamics...

Thank you for your replies, I really appreciate it! I already evaluate this project, it's really interesting, but as I saw, they implement the spastic effects using a controller, and in my project we were more interested in having this two processes (spastic transformation and dynamic analysis) sepa...