Electromagnetic actuator equipped with means for adjusting its mobile polar element

Process for adjusting a position of a movable polar element of an electromagnetic accelerometer, the movable polar element being securable to a movable mass, the accelerometer comprising a stationary stator element associated with the movable polar element, the stationary stator element and the movable polar element forming a magnetic circuit and defining between them at least two gaps, a magnet helping to create magnetic field lines in the magnetic circuit, a coil for controlling displacement of the movable polar element through electromagnetic induction phenomena, comprising the following steps:

• placement of the movable polar element in an initial position with respect to the stationary stator element,
• orientation of the electromagnetic actuator such that a displacement of the movable polar element can occur substantially perpendicularly to gravity,
• engagement into an opening of the stationary stator element of a polar element for adjusting a position of the movable polar element with respect to that of the stationary stator element, the engagement, by deviating the magnetic field lines, causing a displacement of the movable polar element until the movable polar element has reached a desired adjusted position, the desired adjusted position being detected by the strain gauges, the movable polar element being, in the initial position, nearer to the opening than in the desired adjusted position.