Static optimization

[Gary Lu]

Dear all, I have a question about the Static optimization, not any technical problem, I just wonder why is this function named Static optimization since the process of the function didn't optimized anything but compute the muscle force. When I see the name Static Optimization at first, I assume that it's a process that can do something for example like tuning parameters of the muscle models or musculotendon models to better fit the experiment data or any other type of model adjustments. Just curious about this question. Hope someone could tell me the answer. Or if there's anything I missed with the Static Optimization please tell me.

[Thomas Uchida]

I just wonder why is this function named Static optimization since the process of the function didn't optimized anything but compute the muscle force.

In general, knowing net joint moments (from Inverse Dynamics) is not enough information to solve the "muscle redundancy problem" (or "muscle force-sharing problem"): there are infinitely many possible solutions. The objective function in the optimization problem provides the additional information necessary to solve the problem uniquely.

[Gary Lu]

The objective function in the optimization problem provides the additional information necessary to solve the problem uniquely.

Thomas, thanks a lot for your quick reply. I thinks I understand now.