The motion of an omni-mobile vehicle on a horizontal plane is considered. The wheels are modelled by
absolutely rigid discs. Slippage in a certain direction, which makes a constant non- zero angle with the
plane of a disc, is possible at the contact point of a wheel and the plane, and the planes of the discs
are fixed with respect to the platform of the vehicle. The dynamic equations of motion are obtained for
vehicles of this type with an arbitrary number and arrangement of the wheels. A complete qualitative
description of the inertial motion of a vehicle is given (there are no control actions and it is assumed that
there is no friction in the axes). The result is presented in the form of a phase portrait of the system. The
motion of a vehicle is then considered in the case when control moments are applied to the axes of the
wheels. The stability and branching of a certain class of steady motions of the vehicle are investigated.
The domain of parameters is separated out where Andronov-Hopf bifurcation occurs with the formation
of unstable limit cycles.