Patent ID: 6556114
Filing Date: 2003-04-29
Classification: G01V,H01F

Abstract:
Electromagnetic accelerometer comprising a movable mass suspended from a peripheral frame, an electromagnetic actuator configured to compensate for displacements of the movable mass with respect to a reference position, the actuator comprising a stationary stator element associated with a movable polar element securable to the movable mass, 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 the displacement of the movable polar element through electromagnetic induction phenomena, a position sensor detecting a position of the movable mass secured to the movable polar element, an adjustment polar element which cooperates with the stationary stator element so as to place the movable polar element in an adjusted position with respect to that of the stationary stator element, by deviating the magnetic field lines, placing the movable mass, in the absence of motion of the accelerometer, in the reference position.