Hi
I have a simple model: a world frame and a body from the multibody library.
If I simulate it it works fine. But when I switch the “useQuaternions” option to false I get an error.
“Error: Internal error Fatal failure: failtrace”
Thanks in advance.
Hello Valentin,
It seems like the error is caused by a bug in SystemModeler. We are looking into this.
However if you would like to simulate it without using quaternions, you could make it work by connecting the body to a Modelica.Mechanics.MultiBody.Joints.FreeMotion and then the freeMotion to the world component. See my attached model.
I hope this helps!
Thanks,
Markus