Japan Aviation Electronics Industry, Limited

Nec Corporation

Mitsuhiro Nakajima

Takeshi Inoue

Atsushi Ochi

Mitsuru Yamamoto

Kenji Kuramoto

Hiroyuki Takahashi

Takashi Nakahara

Takeshi Hosokawa

A vibratory gyroscope including a vibrator () integrally having a plate-like body portion () spreading along a reference plane, three drive arms () extending in a first direction from the body portion along the reference plane, and two detection arms () extending in a second direction opposite to the first direction from the body portion along the reference plane. The three drive arms are composed of two exciting drive arms () that are excited in mutually opposite phases in the reference plane and a non-exciting drive arm () located between the two exciting drive arms. Each of the three drive arms has an arm width in a width direction along the reference plane and perpendicular to the first direction. Each of the two detection arms has an arm width greater than that of the drive arm in the width direction, thereby suppressing generation of vibrations along the reference plane.

Vibratory gyroscope

A six-legged type piezoelectric vibration gyroscope having a pair of exciting arms extending from a body () in a first direction (A) with a space therebetween, one non-exciting arm () extending in the first direction between the exciting arms from the body, a pair of detecting arms () extending from the body in a second direction (A) with a space therebetween, and one non-detecting arm () extending in the second direction between the detecting arms from the body. The exciting arms are coupled with a drive-side electrode. The detecting arms are coupled with a detection-side electrode. The exciting arms, non-exciting arm, detecting arms, and non-detecting arm respectively consist of a piezoelectric. The respective exciting arms differ in width size from the non-exciting arm. The respective exciting arms differ in width size from the respective detecting arms. The respective exciting arms differ in width size from the non-detecting arm.

Six-legged type piezoelectric vibration gyroscope

Growing community of inventors

Tokyo, Japan

Mitsuhiro Nakajima