Action Graph to Move Custom Robot Using ROS? How should the articulation controller be set up?

How should the articulation controller be set up?

It looks like you need to assign the articulation root to the node. does your robot have an articulation already?

Hi,
I have already resolved it,but I am a 4-wheel differential model and have encountered a new problem. What should I do to address the issue of spinning and slipping in place?

the spinning and slipping in place of what relative to what? you mean the wheel relative to the ground that should be handled by the friction coefficient on the materials in question. if you mean spinning and slipping in place of the differential axel then that’s a whole new model you need to write.