apply ground reaction force

Main Forum
1

Hi,

I am using “GaitLowerExtremity” to do gait simulation.

I noticed that ground reaction force is applied through “ForcePlateType2AutoDetection.any”.

I can see from the model view that the force applied to the foot moves approximately from the heel to the toe as the foot steps on the force plate. But I cannot understand how this movement of ground reaction force is realized in “ForcePlateType2AutoDetection.any”.

Please could Anybody explain this to me.

Another question:

If I choose not to use force plate. Instead, I want to use text file which contains the time, force(x,y,z), moment(x,y,z) and point location of force (x,y,z) to present ground reaction force directly. I know how to apply force to a point of a segment. But how to apply this kind of ‘moving’ forces to the foot?

Any help would be great appreciated :).

Many thanks.

Regards,
Jerry

2

Hi Jerry,

here are a couple remarks:

  1. there is a description in the Wiki about how to setup your own MoCap model, with a section describing ForcePlate Types:
    http://wiki.anyscript.org/index.php/How_to_setup_your_own_MoCap_driven_Model#What.27s_the_difference_between_the_ForcePlateType4AutoDetection.any_and_ForcePlateType4.any_files.3F

  2. The GaitVaughan Model in the repository uses txt files as Force Plate Data input. So, you might have a look there to get going