Vibrating-type gyroscope element and angular velocity sensor including same

A vibrating-type gyroscope element 100 comprises a fixed part 10, a resonator 20 having a vibration mode of cosNθ (N is a natural number greater than or equal to 2), support parts 30, and electrodes 40. The electrodes 40 are respectively disposed in 4N orientations lying along the outer circumferent...

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Hauptverfasser: MORIGUCHI, Takafumi, UCHINO, Ryohei, OKIMOTO, Naoki
Format: Patent
Sprache:eng
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Zusammenfassung:A vibrating-type gyroscope element 100 comprises a fixed part 10, a resonator 20 having a vibration mode of cosNθ (N is a natural number greater than or equal to 2), support parts 30, and electrodes 40. The electrodes 40 are respectively disposed in 4N orientations lying along the outer circumferential direction of the resonator 20. The plurality of electrodes 40 include primary drive electrodes PD and secondary sensing electrodes SPO. The vibrating-type gyroscope element 100 satisfies the relationship U ≥ 1 or (S1 + S2 ) - 2 ≥ |S1 − S2|, where S1 is the number of cases in which the primary drive electrodes PD are disposed in the orientation adjacent to the secondary sensing electrodes SPO on the clockwise side, S2 is the number of cases in which the primary drive electrodes PD are disposed in the orientation adjacent to the secondary sensing electrodes SPO on the counterclockwise side, and U is the number of secondary sensing electrodes SPO having no primary drive electrodes PD disposed adjacent thereto.