Patent ID: 6397676
Filing Date: 2002-06-04
Classification: G01C

Abstract:
A piezoelectric oscillator to output an angular velocity proportional to a Coriolis force in a rotating system, said piezoelectric oscillator comprising:a plurality of vibration legs, each vibration leg having a rectangular cross section and a center axis; a pair of driving electrodes formed on a first surface of each vibration leg, each pair of driving electrodes having a spacing therebetween and extending in a direction of a length of the vibration leg in a plane extending in said driving direction; and a pair of output electrodes opposing said driving electrodes formed on a second surface of each vibration leg, the second surface opposing the first surface, each pair of output electrodes extending in the direction of the length of the vibration leg, each pair of output electrodes symmetrically disposed around and positioned as far as possible from the center axis of the vibration leg on which the pair of output electrodes is disposed, and all but one pair of output electrodes configured to receive an invariable potential.