Search found 3 matches

by Levi Schilder
Fri Nov 12, 2021 4:40 am
Forum: OpenSim
Topic: Using a custom joint on a prosthetic leg - Forward Dynamics question
Replies: 0
Views: 430

Using a custom joint on a prosthetic leg - Forward Dynamics question

Hi Everyone, Currently, I am developing a plugin that creates a new custom joint. This joint is simply a torsional spring that replaces the ankle joint in a prosthetic leg. This spring should always pull the foot back to the zero position. The plugin is finished, and inserted in the ankle of a model...
by Levi Schilder
Wed Jun 09, 2021 2:10 am
Forum: OpenSim
Topic: Forward Dynamics Correction Controller - How to disable an actuator?
Replies: 1
Views: 466

Forward Dynamics Correction Controller - How to disable an actuator?

Hi team, Currently, I am developing a plugin using the OpenSim API that creates a new custom joint. This joint is simply a spring with non-linear stiffness. This plugin is used in the ankle of a prosthetic leg. The plugin takes the ankle angle, and applies a torque that should return the foot to the...
by Levi Schilder
Fri Feb 26, 2021 4:21 am
Forum: OpenSim
Topic: Simple Question: Non-linear torsional spring with CoordinateLimitForce?
Replies: 1
Views: 369

Simple Question: Non-linear torsional spring with CoordinateLimitForce?

Hi everyone, Currently, I am trying to create a model of a body with a prosthetic leg that has actuators in the knee and a spring in the ankle. The issue is: I need to implement a torsional spring in the prosthetic ankle. I used one of the basic tutorials of opensim to implement a CoordinateLimitFor...