Patent ID: 7325451

Claim:
An oscillating, micro-mechanical sensor of angular velocity, said sensor comprising at least one seismic mass ( 1 ), ( 9 ), ( 10 ), ( 20 ), ( 30 ), ( 31 ), ( 45 ), ( 46 ) and associated movable electrode attached to a body of the sensor component at support areas such, that in the sensor of angular velocity, a primary motion, which has to be generated, is an angular oscillation of the at least one seismic mass ( 1 ), ( 9 ), ( 10 ), ( 20 ), ( 30 ), ( 31 ), ( 45 ), ( 46 ) and the associated movable electrode about an axis perpendicular to the plane of the disk formed by the masses, in addition to the primary motion, the seismic mass ( 1 ), ( 9 ), ( 10 ), ( 20 ), ( 30 ), ( 31 ), ( 45 ), ( 46 ) possesses a second degree of freedom in relation to a detection axis perpendicular to the primary motion, and that in association with at least one edge of the seismic mass ( 1 ), ( 9 ), ( 10 ), ( 20 ), ( 30 ), ( 31 ), ( 45 ), ( 46 ), at least one pair of electrodes is provided, which the pair of electrodes together with the surface of the mass ( 1 ), ( 9 ), ( 10 ), ( 20 ), ( 30 ), ( 31 ), ( 45 ), ( 46 ) forms two capacitances such, that, as a function of an angle of rotation of the primary motion of the mass ( 1 ), ( 9 ), ( 10 ), ( 20 ), ( 30 ), ( 31 ), ( 45 ), ( 46 ), the capacitance of one pair of electrodes will increase and the capacitance of the other pair of electrodes will decrease.