Constraints, CMC

[Arash Mohammadzadeh Gonabadi]

Hello,

I have some question about the constraints in CMC:

- How can we find the best constraint which is convenient for CMC?
- Do we need to make the constraints according to the experimental EMG signals?
- If we do not have the EMG signals, how we can find the best constraints?

Thank you.

Best,
Arash

[Apoorva Rajagopal]

Hi Arash,

Control constraints are not necessary to run CMC. Sometimes, it might be helpful to include control constraints to specify when certain muscles are on/off (e.g., constrain the plantarflexors to be off in mid-swing in walking) to help shape the feasible solution space, and this can be done using . There are some examples included with the OpenSim installation that use control constraints that you can use as a reference. You could also browse the SimTK forum and other projects to find examples of how others have used control constraints in CMC (e.g., I believe Sam Hamner shared all of his data and setup files to generate his CMC running simulations on his SimTK project page).

Cheers,
Apoorva

[Arash Mohammadzadeh Gonabadi]

Hi Apoorva,

Thank you so much for your respond, and my apologies for responding late.

Best,
Arash