Structural properties and classification on kinematic and dynamic models of wheeled mobile robots

The structure of the kinematic and dynamic models of wheeled mobile robots is analyzed. It is shown that, for a large class of possible configurations, they can be classified into five types, characterized by generic structures of the model equations. For each type of model the following questions are addressed: (ir)reducibility and (non)holonomity, mobility and controllability, configuration of the motorization, and feedback equivalence.