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Search found 32 matches
- Tue Jan 14, 2020 7:12 am
- Forum: OpenSim
- Topic: explanation of muscle-tendon element equation
- Replies: 2
- Views: 239
Re: explanation of muscle-tendon element equation
thank you very much! ![Smile :)](./images/smilies/icon_e_smile.gif)
![Smile :)](./images/smilies/icon_e_smile.gif)
- Mon Jan 13, 2020 5:11 am
- Forum: OpenSim
- Topic: explanation of muscle-tendon element equation
- Replies: 2
- Views: 239
explanation of muscle-tendon element equation
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What are exactly all the f's? I have some vague idea, but i don't understand everything
What are exactly all the f's? I have some vague idea, but i don't understand everything
- Wed Dec 18, 2019 10:43 am
- Forum: OpenSim
- Topic: RRA fails without any error communicate
- Replies: 2
- Views: 653
Re: RRA fails without any error communicate
ok, it works, thank you ![Smile :)](./images/smilies/icon_e_smile.gif)
![Smile :)](./images/smilies/icon_e_smile.gif)
- Wed Dec 18, 2019 10:03 am
- Forum: OpenSim
- Topic: RRA fails without any error communicate
- Replies: 2
- Views: 653
RRA fails without any error communicate
Hello again I have few c3d files with various gaits and runs from which I extracted markers and force data. Each file was recorded by the same person with the same equipment. Each of files work well, I've been able to succesfully calculate muscle and joint forces. Except for one file, that seems to ...
- Wed Dec 04, 2019 9:07 am
- Forum: OpenSim
- Topic: How are excitations calculated in CMC?
- Replies: 3
- Views: 314
Re: How are excitations calculated in CMC?
I was already reading this and still don't understand. What is exactly the function a(x)? Is is derived from those relations?
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- Wed Dec 04, 2019 4:31 am
- Forum: OpenSim
- Topic: Inverse Dynamics
- Replies: 1
- Views: 340
Re: Inverse Dynamics
if you have all the forceplate data in a single file (that is, Fx, Fy, Fz, Px, Py, Pz, Mx, My, Mz values for all force plates for the whole duration of simulation), you just have to assign each force plate data to a correctfoot (in gait 2932 - to calcn bodies)
- Wed Dec 04, 2019 4:23 am
- Forum: OpenSim
- Topic: How are excitations calculated in CMC?
- Replies: 3
- Views: 314
How are excitations calculated in CMC?
As in thread title, how exactly are excitation levels calculated during CMC? I don't entirely understand. In "how cmc works" it is said that they are calculated using static optimisation for all model actuators. But static optimisation calculates muscle activations (with known max isometric forces, ...
- Sat Nov 16, 2019 10:12 am
- Forum: OpenSim
- Topic: question regarding SO
- Replies: 4
- Views: 511
Re: question regarding SO
Yeah, I considered bad scaling/too little foot markers. I have problems with putting markers on feet in a way they behave more naturally during inverse kinematics. But I have no movie of subject during recording so I cant compare. Forces are measured on forceplates, they should be quite good. https:...
- Sat Nov 16, 2019 9:45 am
- Forum: OpenSim
- Topic: question regarding SO
- Replies: 4
- Views: 511
Re: question regarding SO
I have both filtered kinematics and I am using RRA states for kinematics. I tried increasing optimal forces on pelvis point and torque actuators and the jumps are smaller, but still occur. Also more residual forces equals less natural outputs. Or should I not care and just increase residuals even mo...
- Sat Nov 16, 2019 8:53 am
- Forum: OpenSim
- Topic: question regarding SO
- Replies: 4
- Views: 511
question regarding SO
Hello I am doing static optimization and the results have sudden jumps for all muscles at once. During computing there weren't any errors and constraint violations were very low all the time. Here are the results for glut_med1,2,3 muscles: http://prntscr.com/pxtuz5 This is for sum of muscle activati...