Patent ID: 8820136
Filing Date: 2014-09-02
Classification: G01C,G01P

Abstract:
1. A microelectromechanical gyroscope comprising: a driving mass configured to be driven with a driving frequency during a normal operating state; a sensing mass, elastically coupled to the driving mass and movable with respect to the driving mass according to a degree of freedom in response to rotations of the gyroscope about a sensing axis, the sensing mass including: a continuous self-test actuator configured to produce a self-test signal during the normal operating state and during a rest state, the self-test actuator including: a sensing device that includes a second fixed electrode capacitively coupled to the second mobile electrode, the second fixed electrode being configured to sense transduction signals indicative of displacements of the sensing mass according to the degree of freedom, the sensing device being configured to discriminate, in the transduction signals, spectral components corresponding to the rotations of the gyroscope about the sensing axis from spectral components corresponding to the self-test actuation frequency, the spectral components being indicative of motion of the sensing mass caused by the self-test signal, the sensing device including: