Patent ID: 7347097
Filing Date: 2008-03-25
Classification: G01P

Abstract:
1. A servo compensating accelerometer comprising: a housing that includes a top half and a bottom half, each half having an opening; top and bottom magnetic systems within the housing, the magnetic systems adjustably positioned in the openings for tuning of an output signal of a differential angular displacement sensor, wherein each magnetic system includes a magnetic conductor, a magnet inside the magnetic conductor, and a field concentrator; two movable coils mounted on a movable plate that is suspended using a metallic suspension, and magnetically coupled to the respective magnetic systems, the movable coils and the magnetic systems forming a momentum sensor; two toroidal excitation coils located on the respective magnets that, together with the magnetic systems and the movable coils, form the differential angular displacement sensor; and a feedback electrical circuit that generates an output signal based on an output of the momentum sensor and which is proportional to applied acceleration and provides a feedback signal to the movable coils to return the movable plate and the movable coils to a neutral position.