Prescribed coordinate speed during optimization.

[Hojin Song]

Hi,

I am working on the optimal control problem for predicting unmeasured motions and I came up with a couple of questions.

1) Is it possible to prescribe the speed of coordinates or at least make one relatively faster or slower than the other in OpenSim.

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2) Is there any way that I can force stop the coordinates once it reaches its min/max limits? I used CoordinateLimitForce with high stiffness but it makes counter motions when it reaches its limit (e.g. a clockwise motion turns to an anti-clockwise motion after reaching the coordinates' upper/lower limits)

Please share any thoughts or ideas with me.

Many Thanks,
Hojin