method of controlling a control device for coupling two jaw.

The invention relates to the field of the near pilot reports an integrated sequential gearbox, a synchronization mechanism, either within a traction chain vector, or within a hybrid powertrain including in addition engine one or more electric traction motors. The coupling device comprises two jaw rotating about a same axis and each formed of teeth, the jaw being adapted to engage under the action of a mechanism producing a force allowing the translational movement of one of the jaw movable relative to each other, the translation taking place along the axis of rotation of the jaw. The method comprises at least the following phases: - a first phase of approach without contact between the jaw, where a maximum stress (Umax) is applied to the translation of the movable claw; - a second phase in which the force applied (Uanticip) is reduced to detect the nature of contact between the teeth of the claws from at least the following three states: no contact, contact promoting the movement of the movable dog contact and opposing the movement of the movable dog - a phase of determination of a relative angular path (161, 162, 163) between the teeth, between an initial time t1 and end time of contact, - a phase computation and application of the force to be applied (U (t)) for follow the desired path (161, 162, 163) ..