Angular velocity detection circuit, method of detecting angular velocity and vibrating gyroscope

摘要

A method of detecting an angular velocity including generating a differential signal from a vibrator, the differential signal having a Coriolis force proportional to angular velocity if the vibrator is rotated; generating a timing signal based on the differential signal; and applying the differential signal to a voltage-time converter which, based on the timing signal, converts the differential signal to a pulse train having a duty cycle proportional to the angular velocity. The method is implemented in an angular velocity detector, such as a gyroscope.