Abstract
This paper presents a piezoelectric-ceramic vibratory gyroscope with a new structure. The vibrator of this vibratory gyroscope consists of a piezoelectric-ceramic circular cylinder and no adhesion process is necessary. On its outer cylindrical surface, six elongated electrodes are formed in parallel with each other along the central axis. These electrodes are used both for poling treatment and AC excitation as well as detection. Adjustment of resonant frequencies between each of the three terminals by trimming helps eliminate any compensations of circuit constants, so that simple circuitry can be obtained. Because of its small size and simple structure, this vibratory gyroscope is expected to be used in the shake sensor for cameras and hand-held video cameras.
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