Hello,
I am trying to add a passive aid walking device to a model to simulate the influence of the ankle device on gait and muscles involved in it (mainly gastrocnemius).
I am performing several trials with different parameters of stiffness, damping and transition but I do not understand the values of TRANSITION at all.
In a previous walkthrough I found the following explanation for TRANSITION: This term indicates the transition from zero to constant stifness as the coordinate exceeds its limit, in degrees.
Does it mean that transition * limit(degrees) = stiffness? I do not understand why in this case the value of TRANSITION is 2.0 meanwhile the values of the other parameteres are:
upper siffness: 30.0
upper limit: 5.0 degrees
damping: 0.01
Can anyone explain me the values for TRANSITION and the effect on passive device simulation?
Thank you in advance
Passive Devices (Spring Parameters)
-
Daniel Iordanov
- Posts: 6
- Joined: Mon Sep 03, 2018 7:17 am
-
Dimitar Stanev
- Posts: 1096
- Joined: Fri Jan 31, 2014 5:14 am
Re: Passive Devices (Spring Parameters)
In this case, you can have a look at the implementation to understand how the model works:
https://github.com/opensim-org/opensim- ... e.cpp#L259
https://github.com/opensim-org/opensim- ... e.cpp#L259