Search found 14 matches

by Azarang Asadi
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...
by Azarang Asadi
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 ...
by Azarang Asadi
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, ...
by Azarang Asadi
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...
by Azarang Asadi
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.
by Azarang Asadi
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...
by Azarang Asadi
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 ...
by Azarang Asadi
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...
by Azarang Asadi
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...
by Azarang Asadi
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...