Search found 14 matches
- Thu Feb 15, 2024 12:49 pm
- Forum: OpenSim Moco
- Topic: Estimating GRFs while states tracking
- Replies: 8
- Views: 3508
Re: Estimating GRFs while states tracking
Hi all, thank you so much for your comments. I used the code you provided Nick, and the comments you gave Ross and I ended up getting the simulation working with a muscle driven model, state tracking, contact tracking and control tracking. For control references, I used only one single muscle activa...
- Wed Feb 07, 2024 7:49 am
- Forum: OpenSim Moco
- Topic: Estimating GRFs while states tracking
- Replies: 8
- Views: 3508
Re: Estimating GRFs while states tracking
Thanks Aaron for the response. That's what I tried to do, foot-contact model but just in 3D example, if you add six contacts per foot ( I used the paper mentioned in moco paper for this) and remove the GRFs, it takes forever to solve and that then using createExternalLoad to get GRFs, they are very ...
- Tue Feb 06, 2024 4:52 pm
- Forum: OpenSim Moco
- Topic: Estimating GRFs while states tracking
- Replies: 8
- Views: 3508
Re: Estimating GRFs while states tracking
Hi Aaron, Thanks for your reply. So I've looked at that 2D problem and tried to expand it to 3D. But still it takes years to solve and I just stop the optimization. That's why I started with 3D example in resources folder. My question is this: In the muscle driven states tracking of moco resources, ...
- Mon Feb 05, 2024 1:58 pm
- Forum: OpenSim Moco
- Topic: Estimating GRFs while states tracking
- Replies: 8
- Views: 3508
Estimating GRFs while states tracking
well hi again, After months of trying, I'm still having a hard time getting moco to work. :( Initially I had some data of stroke gait which included GRFs,IKs, and scaled models (gait 2392). I used these for many studies and then I decided to use moco on the same data, but have been facing some chall...
- Mon Dec 18, 2023 10:36 am
- Forum: OpenSim Moco
- Topic: Moco Track with Contact modeling
- Replies: 8
- Views: 804
Re: Moco Track with Contact modeling
Thank you so much Nick. This really helped ,cause I've been getting good results with Moco Track but not inverse when I have contact model. Thanks again.
- Thu Dec 14, 2023 12:18 pm
- Forum: OpenSim Moco
- Topic: Moco Track with Contact modeling
- Replies: 8
- Views: 804
Re: Moco Track with Contact modeling
Hi Nick, Doesn't moco track automatically add effort goal to any problem? with the above code my GRF look kinda similiar to the experimental data. I thought I can track the coordinates with track.setStatesReference(TableProcessor("s98_pre_1_coordinates_41_updated.mot")); track.set_allow_unused_refer...
- Mon Nov 27, 2023 11:32 am
- Forum: OpenSim Moco
- Topic: Moco Track with Contact modeling
- Replies: 8
- Views: 804
Re: Moco Track with Contact modeling
Hi Nick, I'm just doing a simple track with contact modeling to make sure that my simulation is close enough to the experimental data and then I'm planning to make some changes to my controls using the control tracking goal to create new motions. Here's the simple code I used to get a simulation of ...
- Thu Nov 23, 2023 3:25 pm
- Forum: OpenSim Moco
- Topic: Moco Track with Contact modeling
- Replies: 8
- Views: 804
Re: Moco Track with Contact modeling
Hey Nick, Thanks for your reply. I did use that and still my COP is 0. I have attached the GRF file. Also how can I get individual forces of each contact element? What I noticed is that when SmoothSphereHalfSpaceForce is used for force, it does not show in GUI under contact forces while Hunt-Crossle...
- Wed Nov 22, 2023 2:02 pm
- Forum: OpenSim Moco
- Topic: Moco Track with Contact modeling
- Replies: 8
- Views: 804
Moco Track with Contact modeling
I have recently tried to use spheres for foot ground contact modeling. I have all my mocap data including GRF. What I'm trying to do is to compare my contact results to experimental GRF to make sure my contact model is working so that I can do the ret of my research. I have 6 spheres per foot. In ad...
- Thu Jul 06, 2023 9:38 am
- Forum: OpenSim
- Topic: Moco Visualize erros
- Replies: 1
- Views: 510
Moco Visualize erros
Hey all, I have done some Moco inverse problem. I get the message that the solver succeeded and the solution is written but during visualization, I get a problem. When I run --> study.visualize(solution); <-- a window pops up but it's all white. It shows nothing and when I close the window I get thi...