Hello, perhaps this is not the correct place to adress this question. If there is another place, please let me know.
I'm starting using mbsim software. It's an awesome piece of software and so it's very complex. I've studying the examples under examples/xml and I've made some progress.
Now I have a tricycle model, but to analyse specific stability problems I can not manage to configure the software.
For example, I would like to run a case in which the tricycle goes straight, then makes a constant radius turn (180º), and returns straight. This should be done with an almost constant velocity, and the model shall be stable.
I've defined the trajectory as a planar contour, and tried to establish a bilateral contact between one point in the tricycle and the trajectory. It does not work. I should also define the rotation of the direction following the curve, but I do not know how to make it.
I've experimented with kinetic excitations, imposing a moment in the steering, but when turning, if I make the moment null, then it goes inestable (no handling force acting).
If I could impose a time rotation between both parts then I would control the steering, but I have not been able to do it.
I've seen some very complex models in which sensors, signals, and controllers are used so the moment applied to the steering depends on the dynamics of the model, but I would prefer to skip all this complexity if possible.
I will send you my model to see if you can help me.
In any case, thanks for maintaining this amazing software, regards
modelo1.zip
.