Patent ID: 6841958
Filing Date: 2005-01-11
Classification: F16C,G01D,H02K,H03M

Abstract:
1. A device for controlling an electric motor of the electronic switching type comprising N pairs of poles and P phases, the said device comprising: a coder ( a fixed sensor ( a circuit for switching the currents in the phase windings of the motor which comprises 2*P*N switches; a circuit for controlling the switching circuit which is able: when a binary sequence is read, to determine the state of the switching logic of the currents in the phase windings which corresponds to the absolute angular position associated with the said binary sequence; according to the position signals (A, B) detected, to determine continuously the state of the switching logic which is adapted to the angular position of the rotor ( to supply the switching signals for the switches which correspond to the state of the logic determined by the revolution pip signal (C) or by the position signals (A, B).