Patent ID: 6484576
Filing Date: 2002-11-26
Classification: G01C

Abstract:
A tuning-fork vibratory gyro having first and second arms and a base integrally connected to the first and second arms, said tuning-fork vibratory gyro comprising:drive electrodes used to generate tuning-fork vibrations due to a piezoelectric transversal effect, said drive electrodes being provided on at least one of first and second surfaces of each of the first and second arms opposite to each other; detection electrodes provided on at least one of the first and second surfaces of each of the first and second arms and used to output a detection voltage due to an angular velocity; and reference electrodes provided on at least one of the first and second surfaces of each of the first and second arms and connected to a reference potential, wherein the drive electrodes and the detection electrodes are located in the vicinity of root portion which are bifurcated from the base, and wherein the detection electrodes are provided next to the root portions and on the opposite side of the drive electrodes.