Search found 7 matches

by Mathew Varre
Sun Aug 03, 2014 4:39 pm
Forum: OpenSim
Topic: ID giving vertical ground reaction force profile
Replies: 4
Views: 1588

Re: ID giving vertical ground reaction force profile

Hi Paige, I don't know if this would be of any help now. From my experience with running ID, I have noticed two things that would a huge make difference in the moments/force output. 1) If you're using directly IK without running RRA, filtering the data makes a huge difference in the output. 2) I hav...
by Mathew Varre
Thu Jul 31, 2014 9:13 am
Forum: OpenSim
Topic: Issues with opening UE Dynamic Model
Replies: 2
Views: 452

Re: Issues with opening UE Dynamic Model

Hi James,

Thank you for your response. I checked and it opens with v3.1. I was not able to post to the project page forum as it is not open to public or not setup yet perhaps.

Regards
Mathew
by Mathew Varre
Wed Jul 30, 2014 3:28 pm
Forum: OpenSim
Topic: Inverse Dynamics: Generalized Forces not being output
Replies: 4
Views: 516

Re: Inverse Dynamics: Generalized Forces not being output

Hi James, Thank you very much for your prompt and detailed response about the ID. This is very helpful to me. I do understand now that 'rotational coordinates' will provide 'rotational moments' at the joints and 'translational coordinates' would provide 'translational forces'. I was thinking I could...
by Mathew Varre
Wed Jul 30, 2014 10:42 am
Forum: OpenSim
Topic: Inverse Dynamics: Generalized Forces not being output
Replies: 4
Views: 516

Re: Inverse Dynamics: Generalized Forces not being output

Hi James, Thank you for your reply. I agree with your statement that ID gives generalized force at each generalized coordinate available in the model. But when I run ID, the .STO file output contains only the moments for these generalized coordinates but NOT the forces. I tried different .MOT header...
by Mathew Varre
Fri Jul 25, 2014 4:04 pm
Forum: OpenSim
Topic: Inverse Dynamics: Generalized Forces not being output
Replies: 4
Views: 516

Inverse Dynamics: Generalized Forces not being output

Hello All, I have been using inverse dynamics tool to compute the generalized forces and torques in an upper extremity model (Arm2013). I have input my reaction forces (N), Point of Force Application (m) and moments (N-m) into the ID setup file. The output .sto file has only moments at the shoulder,...
by Mathew Varre
Fri Jul 25, 2014 3:51 pm
Forum: OpenSim
Topic: Issues with opening UE Dynamic Model
Replies: 2
Views: 452

Issues with opening UE Dynamic Model

Hello All, I am having an issue with opening the new upper extremity model (MoBL_ARMS_Upper_Limb_OpenSim.osim). It pops out the following error message "Could not construct a model from C:\OpenSim 3.2\Models\OpenSim Model\MoBL_ARMS_Upper_Limb_Model_OpenSim.osim. Possible reasons: syntax error or uns...
by Mathew Varre
Thu Oct 24, 2013 10:53 am
Forum: OpenSim
Topic: Scale tool - Issue with reading in a .trc file
Replies: 0
Views: 196

Scale tool - Issue with reading in a .trc file

Hello All, I am having an issue with fixing an error in the .trc file to go forward with in the scaling process. The scale tool cannot read the files and I see "From File-NOT FOUND" in pink color for all the markers in the "StaticPose Weights". The names of the experimental and virtual markers match...