Title:
VIBRATION GYROSCOPE
Document Type and Number:
Japanese Patent JPH0579843
Kind Code:
A
Abstract:
PURPOSE:To obtain a vibration gyroscope having the excellent characteristics by constituting the main body of a vibrator of a constant-elasticity insulator, and obtaining the main body of the vibrator having the high angle accuracy and the high size accuracy. CONSTITUTION:A main body 1 of a vibrator is vibrated in the direction of the (x) axis at its resonant frequency. For this purpose, a driving piezoelectric transducer 1x is stuck to the (x) surface. A detecting piezoelectric transducer 1y is stuck to the (y) surface in order to detect the vibration caused by Coriolis force generated in the direction of the (y) axis. Grounding electrodes 2x and 2y are formed on the (x) surface and the (y) surface by vapor deposition. Surface electrodes 3x and 3y are formed on the transducers 1x and 1y by vapor deposition. A driving signal is applied across the electrodes 2x and 3x. The main body is vibrated in the direction of the (x) axis of the main body 1 with the transducer 1x, and a speed is imparted. The signal in the direction of the (y) axis is detected with the transducerly. The vibration caused by the Coriolis force Fc generated in the direction of the (y) axis is detected. The output signal is taken out of the electrodes 2y and 3y. Since a constant- elasticity insulator is used for the main body 1 of the vibrator, the main body of the vibrator having the high angle accuracy and the high size accuracy is obtained, and the gyroscope having the excellent gyroscope characteristics is obtained.
Inventors:
SANO SHIGEKI
YOKOYAMA TAKEO
YOKOYAMA TAKEO
Application Number:
JP24152791A
Publication Date:
March 30, 1993
Filing Date:
September 20, 1991
Export Citation:
Assignee:
SHOWA ELECTRIC WIRE & CABLE CO
International Classes:
G01C19/56; G01C19/5642; (IPC1-7): G01C19/56
Attorney, Agent or Firm:
Moriya Kazuo
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