METHOD OF SPECIFYNG COEFFICIENTS OF MICROMECHANICAL GYROSCOPE GIMBAL RIGIDITY AND DAMPING CROSSES AND MICROMECHANICAL GYROSCOPE WITH METHOD IMPLEMENTED Russian patent published in 2009 - IPC G01C19/56 G01P9/04 

FIELD: physics, measurement.

SUBSTANCE: invention relates to vibratory gyroscopes, in particular to micromechanical gyroscopes (MMG) with moving mass (MM). Method of specifying coefficients of MMG gimbal rigidity and damping crosses implies measurement of signals proportional to the MM deflection angles around the primary and secondary vibration axes and formation of a moment compensating the MM vibrations around the axis of secondary vibration on a fixed base, formation of a moment compensating the MM vibrations around the axis of secondary vibration on a fixed base by supplying a sum of two alternating voltages with different amplitudes to the power electrodes set along the secondary vibration axis. One of them is cophased to the signal proportional to the MM deflection angle around the primary vibration axis, the other one is orthogonal to the first one. Coefficients of gimbal rigidity and damping crosses are defined respectively by the relation of the moment value to the measured primary vibration amplitude and to the calculated velocity value of this vibration. MMG comprises MM, a plicated engine, a capacitive sensor of MM shift along the primary vibration axis with its output connected to a phase shifter input, a primary vibration exciting device connected between the capacitive sensors on the primary vibration axis and the plicated engine electrodes, two pairs of electrodes on the secondary vibration axis with one of them being power, the other one - measuring; its output is connected to sequentially set multiplier and low-pass filter; the second multiplier input is connected to the phase shifter output. A device for generating alternating voltage as a sum of voltages with different amplitudes and shifted by 90 degrees in respect to each other is mounted between the electrode pairs on the secondary vibration axis.

EFFECT: increasing MMG sensitivity.

3 cl, 2 dwg