CMC failed for large knee ROM
Posted: Tue Aug 30, 2011 12:31 am
Hi,
I was trying the CMC tool for squatting and sit to stand transfer tasks using the fast optimization target. For both movements no solution was found by the optimizer for knee flexion angle below approximately 60 degrees.
I tried several possible solutions: making muscles twice as strong and increase reserve forces. Yet this wasn't helpful.
Reserves and residuals both have high control values so they are able to generate sufficient force.
Does anyone knows an explanation of why the failure occurs at these particular poses? I will be glad with advise how to deal with the failure.
Thanks in advance!
Lydia
I was trying the CMC tool for squatting and sit to stand transfer tasks using the fast optimization target. For both movements no solution was found by the optimizer for knee flexion angle below approximately 60 degrees.
I tried several possible solutions: making muscles twice as strong and increase reserve forces. Yet this wasn't helpful.
Reserves and residuals both have high control values so they are able to generate sufficient force.
Does anyone knows an explanation of why the failure occurs at these particular poses? I will be glad with advise how to deal with the failure.
Thanks in advance!
Lydia