Search found 48 matches

by Rudolf Klemetti
Mon Jan 08, 2018 8:51 am
Forum: OpenSim
Topic: MuscleMetabolicsProbe
Replies: 8
Views: 1812

Re: MuscleMetabolicsProbe

It is model subject01_simbody_adjusted from the example files of project metabolics_run.
by Rudolf Klemetti
Sun Jan 07, 2018 6:08 am
Forum: OpenSim
Topic: MuscleMetabolicsProbe
Replies: 8
Views: 1812

Re: MuscleMetabolicsProbe

I downloaded (one of the) models you used. Value 0.5 appeared to me. Also, when I analyze the same data, 0.5 produces the total metabolic power similar to data you reported (1 have not done detailed comparison), but value 1 does not. Maybe I have done something wrong, but that is what I got.
by Rudolf Klemetti
Sat Jan 06, 2018 5:11 am
Forum: OpenSim
Topic: MuscleMetabolicsProbe
Replies: 8
Views: 1812

Re: MuscleMetabolicsProbe

Thank you Christopher - I have been able to set up the probe and run the analysis. However, I have one question. What is the muscle effort scaling factor? I have not seen a description of it, yet it has a huge impact on results. By default it is 1, but it seems to me that Uchida et al. (2016) used v...
by Rudolf Klemetti
Wed Dec 20, 2017 9:29 pm
Forum: OpenSim
Topic: MuscleMetabolicsProbe
Replies: 8
Views: 1812

MuscleMetabolicsProbe

Hello - I have been struggling with MuscleMetabolicsProbe for a few days. I set up the probe in the GUI, and only get the basal rate. I have no idea how to set up the probe so that muscles would be included in the analysis. Tutorial 'Simulation-Based Design to Reduce Metabolic Cost' does provide no ...
by Rudolf Klemetti
Tue Apr 16, 2013 11:18 am
Forum: OpenSim
Topic: CMC changes kinematics
Replies: 1
Views: 492

Re: CMC changes kinematics

Hello,

Yes, that is expected; CMC didn't find muscle forces that would exactly produce your experimental kinematics. However, you should modify tracking tasks and/or control constraints, and re-run CMC to get better tracking of the experimental kinematics.

Rudi
by Rudolf Klemetti
Sun Apr 07, 2013 11:50 pm
Forum: OpenSim
Topic: Torque in ground reaction data
Replies: 4
Views: 1272

Re: Torque in ground reaction data

Yuma, I don't give you any equation for calculating torque, since such an equation depenends on how forces and moments are defined in your force plate. I am positive that if your force plate even has sufficient output measures for torque, its manual also describes how to calculate torque with that s...
by Rudolf Klemetti
Sun Apr 07, 2013 10:29 pm
Forum: OpenSim
Topic: Torque in ground reaction data
Replies: 4
Views: 1272

Re: Torque in ground reaction data

Hi Yuma,

Your force plate that you used to collect ground reaction force data should provide torque data as well - or you need to compute the torque data from moments, forces, and centers of pressure. That is, OpenSim does not calculate torque, you have to have it.

Hope this helps,

Rudi
by Rudolf Klemetti
Sun Feb 03, 2013 2:33 am
Forum: OpenSim
Topic: Reference frame in IA
Replies: 0
Views: 297

Reference frame in IA

Hello,

In what reference frame are output results of the induced acceleration analysis expressed? It seems to me that it is not possible to change that reference frame.

Thanks,

Rudi
by Rudolf Klemetti
Mon Oct 22, 2012 7:38 am
Forum: OpenSim
Topic: RRA
Replies: 3
Views: 513

Re: RRA

In 2.2.1, RRA is in CMC.

Rudi
by Rudolf Klemetti
Wed Aug 29, 2012 9:13 am
Forum: OpenSim
Topic: InvDyn w. GRF as external load - what is torque field?
Replies: 2
Views: 832

Re: InvDyn w. GRF as external load - what is torque field?

Hi Dr. Allen,

T_y is free vertical torque about COP exerted to the model. T_x and T_z are usually zeros.

Regards,

Rudi