This method is for controlling an electrical motor, comprising a magnetic rotor comprising at least a couple of magnetic poles, and a stator comprising at least three coils rolled around teeth, said coils being fed in electrical current. The output torque of the motor is controlled by acting on the electrical current provided to the coils. Corrective harmonic currents (M c, i2c, i3c) are provided to the coils to obtain a constant output torque, and are computed on the basis of some characteristics of the electrical motor.