In this paper, new results are obtained for the global tracking of a class
of non-holonomic dynamic systems via state and output feedback. The trackin
g controllers are systematically constructed on the basis of a recursive te
chnique and a full exploitation of the system structure. When disturbances
occur in a non-holonomic chained system, it is shown how to modify the cont
roller design procedure to yield robust tracking control laws. The proposed
method is demonstrated and discussed by means of a benchmark non-holonomic
knife-edge mechanical system.