Title:
VIBRATION GYRO DEVICE
Document Type and Number:
Japanese Patent JPH02266213
Kind Code:
A
Abstract:
PURPOSE:To correct a scale factor during use by providing a constant angle forcible rotating mechanism and comparing a rotation angle arithmetic result based upon a vibration gyro output with the actual angle of rotation of a vibration gyro. CONSTITUTION:When acceleration is applied to the vibration gyro 1, the Coriolis output of the gyro 1 is inputted to an angular velocity arithmetic circuit 3, which calculates the angular velocity by integral arithmetic operation to output the angular velocity output to external equipment, etc., and a correcting circuit 4 in parallel. Then when the scale factor is corrected, the circuit 4 confirms that no angular velocity is applied to a moving body by a stop decision part 4a according to the angular velocity from the circuit 3 and operates the constant angle forcible rotating mechanism 2 to rotate the gyro 1 by a constant angle by the mechanism 2. Then the arithmetic part and memory 3b of the circuit 4 compare the rotation angle found by the arithmetic part from the angular velocity output from the circuit 3 with the constant angle of rotation of the gyro 1 by the mechanism 2 and corrects the circuit constant of the circuit 3 into the actual angle found by the circuit 4 according to the difference.
Inventors:
HOSHINO TARO
FUJIMURA SEIICHI
FUJIMURA SEIICHI
Application Number:
JP8745989A
Publication Date:
October 31, 1990
Filing Date:
April 06, 1989
Export Citation:
Assignee:
NIPPON DENKI HOME ELECTRONICS
International Classes:
G01C19/00; G01C19/56; G01C19/5776; G01C25/00; (IPC1-7): G01C19/56; G01C25/00
Domestic Patent References:
| JPS61102513A | 1986-05-21 | |||
| JP62180714B |
Attorney, Agent or Firm:
Yasuhiko Kagawa
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