Patent ID: 7304450

Claim:
An electric actuator comprising: at least one self-commutated brushless synchronous motor with P phases, where P is an integral number between 1 and 6, and N pairs of poles on a rotor of the motor, where N is an integral number greater than or equal to 1; a position transducer outputting a signal that controls an electronic circuit configured to provide sequential operation of a current of each of the phases, the rotor of the motor driving a speed-reducing gear of ratio R, a travel of an output shaft of the speed-reducing gear being less than 360°, wherein the position transducer is coupled to the output shaft of the speed-reducing gear to measure an absolute angular position of the output shaft of the speed-reducing gear, the electronic circuit ensuring automatic switching of sequences of supply of the phases of said at least one self-commutated brushless synchronous motor based on only the absolute angular position of the output shaft of the speed-reducing gear.