Search found 32 matches

by Daniel Pina
Fri Aug 11, 2017 10:30 am
Forum: OpenSim
Topic: Large activation levels in gluteus medius/minimus and soleus during gait.
Replies: 9
Views: 1324

Re: Large activation levels in gluteus medius/minimus and soleus during gait.

Any possible follow up on this?

I understand it's August and there's a very high chance people are on vacation, but I'd really appreciate some help whenever it's convenient, since I'm still stuck on this...
by Daniel Pina
Thu Aug 10, 2017 3:33 am
Forum: OpenSim
Topic: Documentation website is down?
Replies: 1
Views: 88

Documentation website is down?

Greetings, I've been trying to reach the documentation website for the last couple of days but it seems to be down.. https://simtk-confluence.stanford.edu:8443/display/OpenSim/OpenSim+Documentation (note: I tried to change the port number in the web address e.g. to 8080 but without success) Is there...
by Daniel Pina
Fri Aug 04, 2017 7:52 am
Forum: OpenSim
Topic: Large activation levels in gluteus medius/minimus and soleus during gait.
Replies: 9
Views: 1324

Re: Large activation levels in gluteus medius/minimus and soleus during gait.

Reaction forces (Male vs Female) Female GRF Forces_Torques.png Male GRF Forces_Torques.png Note: Female weighs ~53Kg, Male weighs ~64Kg ID results for both All moments or only the ones related to the pelvis? Female ID.png Male ID.png What do you mean? The choice between using the point data or not ...
by Daniel Pina
Thu Aug 03, 2017 5:51 pm
Forum: OpenSim
Topic: Large activation levels in gluteus medius/minimus and soleus during gait.
Replies: 9
Views: 1324

Re: Large activation levels in gluteus medius/minimus and soleus during gait.

Hi and thank you for the response. I searched relentlessly for something out-of-place with the female's scaled model and I can't seem to find anything wrong. The female's Pelvis is proportionally larger (anatomically, the female's Pelvis is wider, but the lab converter only does x=y=z scaling), but ...
by Daniel Pina
Mon Jul 31, 2017 1:15 pm
Forum: OpenSim
Topic: Large activation levels in gluteus medius/minimus and soleus during gait.
Replies: 9
Views: 1324

Large activation levels in gluteus medius/minimus and soleus during gait.

Hello, I have a number of SO runs that originate from lab results from both a male and a female subject. During the SO runs, I generally see good results during the simulation (constraint violations under 1e-10 and performance numbers in the single digits). However, I noticed that in both subjects I...
by Daniel Pina
Fri Jul 28, 2017 10:05 am
Forum: OpenSim
Topic: Which kinematics file to use for external loads in SO/CMC after running RRA?
Replies: 5
Views: 825

Re: Which kinematics file to use for external loads in SO/CMC after running RRA?

That's precisely the info I was looking for, thank you! I'd never guess there was a recommendation to not use any kinematics file, because that sentence in the documentation is only present in the Inverse Dynamics' chapter . Since the field was there and it got red if I didn't choose any kinematics ...
by Daniel Pina
Thu Jul 27, 2017 11:30 am
Forum: OpenSim
Topic: High frequency noise in SO results after RRA.
Replies: 3
Views: 690

Re: High frequency noise in SO results after RRA.

A little update, but I'm still going around in circles so some help would be greatly appreciated. I went to check the SO force file and the "transformedP" GRF values are there. It seems OpenSIM not only upscales the frequency from the 200Hz initial value to RRA's matching 1000Hz, but it also seems t...
by Daniel Pina
Thu Jul 27, 2017 4:04 am
Forum: OpenSim
Topic: Which kinematics file to use for external loads in SO/CMC after running RRA?
Replies: 5
Views: 825

Re: Which kinematics file to use for external loads in SO/CMC after running RRA?

Thank you Tom. I'm aware of that part of the documentation and I'm following it by using RRA to retrieve the kinematics for the SO run (i.e. in the SO's main settings window). My question here is what kinematics I should use in the external loads configuration, not the SO run itself. So to further e...
by Daniel Pina
Wed Jul 26, 2017 12:39 pm
Forum: OpenSim
Topic: Which kinematics file to use for external loads in SO/CMC after running RRA?
Replies: 5
Views: 825

Which kinematics file to use for external loads in SO/CMC after running RRA?

Hello, I have a motion file originated from inverse kinematics (say "IK.mot"). I then run RRA and get "RRA_kinematics_q.sto", to use later in SO or CMC. Afterwards, I'm supposed to run SO using the "RRA_Kinematics_q.sto" in order to reduce the activation of residual actuators. However, when I'm edit...
by Daniel Pina
Wed Jul 26, 2017 8:58 am
Forum: OpenSim
Topic: High frequency noise in SO results after RRA.
Replies: 3
Views: 690

Re: High frequency noise in SO results after RRA.

A little update. After studying the documentation again, I noticed I hadn't locked the MTP and subtalar angles for RRA. After this procedure in Test01, I got somewhat cleaner results in SO: Gait_Test01_locked_mtp_subtalar.png However, there's still a lot of noise. Since all the motion results from R...