Characteristics of the piezoelectric vibratory gyrosensor constructed using a trident tuning-fork resonator

The vibratory gyrosensor is an instrument that detects angular velocity by the measurement of the Coriolis force. The authors have developed a compact and reliable vibratory gyrosensor using a trident tuning-fork resonator, which has high performance characteristics. The construction of an ideal vibratory gyrosensor requires solutions to problems associated with external shock and vibrations as well as energy loss through the mounting. Therefore, we developed a new vibratory gyrosensor that uses a trident tuning-fork. In developing the vibratory gyrosensor, the dimensional conditions necessary for a stable mounting of the trident tuning-fork were clarified, and the temperature drift characteristics of the gyrosensor more minimized. The present paper describes in detail the characteristics of proposed gyrosensor for practical use. The proposed vibratory gyrosensor using a trident tuning-fork resonator achieved high-performance and was found to be more practical than the beam type or ordinary tuning-fork type gyrosensors