Patent ID: 8104364

Claim:
A gyroscope with a vibrating structure, produced by micromachining in a thin wafer, said gyroscope comprising: a movable inertial assembly comprising at least one movable mass able to vibrate in a plane of the wafer along a drive axis x and along a sense axis y roughly perpendicular to the x-axis, an interdigital sensor comb, an interdigital drive comb, and at least one additional interdigital comb, defining a first quadrature-error compensation comb, connected to the mass and which has two asymmetric air gaps e and λe, λ being a positive real number, for subjecting the mass to an adjustable electrostatic stiffness due to coupling between the x-axis and the y-axis by applying a variable DC voltage V to the quadrature-error compensation comb, wherein, when the gyroscope has a quadrature error, the adjustable stiffness allows compensation for the quadrature error of the gyroscope.