Patent ID: 8051698

Claim:
A micro-electro-mechanical gyroscope, comprising: a first mass structured to be oscillatable according to a first axis with respect to a fixed body; an inertial sensor, including a second mass, structured to be driven by the first mass and constrained so as to oscillate according to a second axis in response to a rotation of the gyroscope; a driving device coupled to the first mass and structured to form a feedback control loop and configured to maintain the first mass in oscillation at a resonance frequency; an open-loop reading device coupled to the inertial sensor and structured to detect displacements of the second mass according to the second axis, the reading device including a charge amplifier structured to receive charge packets from the inertial sensor and convert the charge packets into a charge-integration signal, and a low-pass filter structured to filter the charge-integration signal; and a calibration stage structured to modify a biasing voltage between the second mass and the fixed body so as to minimize a component 2ω R at a frequency twice the resonance frequency in the charge-integration signal.