Vibrating mass gyroscope

The gyrometer has displacement engines (16, 17) exciting two orthogonal oscillation modes of a micro electro mechanical system (10) to cause alternately right or left circular movements of a suspended mass (11) of the system. A phase shift measuring circuit (21) and a frequency meter (22) measure phase and frequency of movements, respectively. A circuit (25) extracts gyrometric information using the measured phase and frequency.