Passive Devices (Spring Parameters)
Posted: Mon Jan 14, 2019 5:06 am
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
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