Search found 119 matches

by Karthick Ganesan
Tue Jul 09, 2024 5:12 am
Forum: OpenSim
Topic: Computing metabolic cost with static optimization
Replies: 1
Views: 711

Computing metabolic cost with static optimization

Dear All, I am wondering if it is possible to use a metabolic probe with static optimization. Or use the output of the static optimization, run an analysis using a metabolic probe, and compute the metabolic cost? Metabolic analysis requires states and controls to be specified. Static optimization on...
by Karthick Ganesan
Wed Oct 18, 2023 5:42 am
Forum: SCONE
Topic: Documentation for RaiseFallProfileFunction
Replies: 1
Views: 450

Documentation for RaiseFallProfileFunction

Dear Thomas,
The documentation for the RaiseFallProfileFunction doesn't contain its details and attributes. Can you please provide this information?
https://scone.software/doku.php?id=ref: ... e_function
Thanks,
Karthick.
by Karthick Ganesan
Thu Mar 02, 2023 5:40 am
Forum: OpenSim
Topic: static optimization failed at some instances
Replies: 1
Views: 857

static optimization failed at some instances

Dear All, As I was running a static optimization for loaded walking, optimizer failed at some instances with error messages similar to below. I have appended reserve actuators. This happened for about 2% of time steps. Is this OK? Any other suggestions? SimTK Exception thrown at InteriorPointOptimiz...
by Karthick Ganesan
Thu Aug 25, 2022 8:55 am
Forum: OpenSim Moco
Topic: Asymmetrical muscle activation in exampleMocoInverse
Replies: 3
Views: 952

Re: Asymmetrical muscle activation in exampleMocoInverse

Thanks Nick. I will try with larger weight. Originally I was doing MocoInverse in Matlab with the model and data from the Moco Paper (Prescribed walking example), For which, I got similar kind of full activations for gaslat, bfsh,sart, glmin, psoas and tfl. I am wondering if you also got similar act...
by Karthick Ganesan
Thu Aug 25, 2022 3:00 am
Forum: OpenSim Moco
Topic: Asymmetrical muscle activation in exampleMocoInverse
Replies: 3
Views: 952

Re: Asymmetrical muscle activation in exampleMocoInverse

The following seems to be the reason, as I saw in another post by Nick. "Without a periodicity goal or some sort of initial bound on the initial muscle activations, they are free to activate as much as they want at the initial time point. The activation state variable at the initial time is basicall...
by Karthick Ganesan
Sun Aug 21, 2022 8:58 am
Forum: OpenSim Moco
Topic: Asymmetrical muscle activation in exampleMocoInverse
Replies: 3
Views: 952

Asymmetrical muscle activation in exampleMocoInverse

Hi all,
When I ran the exampleMocoInverse code, I see some muscle activations are highly asymmetrical with full muscle activation (for example see the pic below). What is the reason for this and how to overcome this?
gaslat.png
gaslat.png (13.27 KiB) Viewed 952 times
Thanks,
Karthick.
by Karthick Ganesan
Tue Jul 26, 2022 11:12 pm
Forum: OpenSim Moco
Topic: Joint Reaction Analysis from Moco Solution
Replies: 1
Views: 384

Joint Reaction Analysis from Moco Solution

Hi All, I am performing a joint reaction analysis from Moco solution using the AnalyzeTool. I specify the controls file under control set, then a states file and grf file under external loads file. I don't specify forces file under JointReactionAnalysis. Is this right? I want to confirm. Thanks, Kar...
by Karthick Ganesan
Sat May 28, 2022 3:08 am
Forum: OpenSim
Topic: Error in Muscle Analysis
Replies: 1
Views: 577

Re: Error in Muscle Analysis

I couldn't resolve this issue still. I will be grateful, if anyone has some suggestion to overcome this issue.
Thanks,
Karthick.
by Karthick Ganesan
Wed May 04, 2022 6:22 am
Forum: OpenSim Moco
Topic: Accessing kinematic states when using inverse.initialize()
Replies: 1
Views: 420

Accessing kinematic states when using inverse.initialize()

Hi all, When we create a study using inverse.initialize() and solve, the solution file doesn't seem to contain the kinematic states in it (The solution of a MocoInverse has the kinematic states). If that is true, how to get a states/solution file which includes the kinematic states. I need them for ...
by Karthick Ganesan
Wed Dec 22, 2021 12:07 am
Forum: OpenSim
Topic: Error in Muscle Analysis
Replies: 1
Views: 577

Error in Muscle Analysis

Dear All, When I was doing a muscle analysis using the analyze tool with a setup file in Matlab , I got the following error. It was with 'DegrooteFregly2016Muscle'. I was able to do the muscle analysis with a different model with 'DegrooteFregly2016Muscle' earlier. WARNING- MuscleAnalysis::record() ...