共振制御装置、振動ジャイロ及び共振制御方法

Japanese Patent JP7292514

B2

A vibratory gyroscope (1) comprises a circular resonator (101), a plurality of actuators (102) for applying radial excitation force to the resonator (101), and a plurality of displacement sensors (103) for detecting the radial displacement of the resonator (101). A resonance control device (106) of the vibratory gyroscope (1) uses a reference signal having a reference signal frequency matching a resonant frequency of the resonator (101), which is calculated on the basis of the sensor signals output by the displacement sensors (103), and the amplitude and the antinode azimuth of resonant vibration that has been excited in the resonator (101), which are derived from the sensor signals, to generate an in-phase signal that is in phase with the reference signal and an antiphase signal that is in antiphase with the reference signal. The resonance control device (106) uses the in-phase signal and antiphase signal to drive the actuator (102) with alternating current and uses the amplitude and antinode azimuth of the in-phase signal and the amplitude and antinode azimuth of the antiphase signal to output an estimated angular velocity for the resonator (101).

WO/2001/053776	VIBRATORY SENSOR OPERATING AS A RATE GYRO ABOUT TWO AXES AND AS A RATE INTEGRATING GYRO ABOUT THE THIRD ONE
JP7456412	inertial sensor
WO/2008/090275	METHOD FOR CALIBRATING A SCALE FACTOR IN AN AXISYMMETRICAL VIBRATING GYROMETER

Yuri Kanai Summer
Kazuo Hattori

JP2022533304A

June 16, 2023

June 30, 2020

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Mitsubishi Electric Corporation

G01C19/5691

JP6241810A

WO2015107704A1

Mitsuru Kimura
Koji Yashima
Hideki Mie
Yukio Watanabe
Ryohei Miyawaki
Shiro Tatsutake

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