Patent ID: 6561028
Filing Date: 2003-05-13
Classification: G01C

Abstract:
A mechanical resonator, comprising:at least one resilient suspension; at least one anchor; a mass part layered predominantly in one plane and fixed by said resilient suspension to said at least one anchor for allowing rotary oscillations of said mass part about a rest position in said plane, said mass part having electrically conductive detection areas, said mass part to be rotated out of said plane about an axis running in said plane in said rest position, said axis being stationary relative to said at least one anchor, said mass part mirror image symmetrical in said plane about said axis when said mass part is in said rest position; said at least one resilient suspension aligned along said axis in said rest position; electrically conductive detection electrodes disposed opposite said detection areas in a direction perpendicular to said plane and immobile relative to said at least one anchor; and electrically conductive negative feedback electrodes disposed opposite said detection areas in said perpendicular direction, immobile relative to said at least one anchor, and disposed and dimensioned to compensate for a torque that acts on said mass part about said axis when electrical potentials are applied to said feedback electrodes.