Title:
ROTATIONAL VIBRATION GYRO
Document Type and Number:
WIPO Patent Application WO/2010/016093
Kind Code:
A1
Abstract:
A rotational vibration gyro in which detection sensitivity in the direction of one detection axis is not affected by detection sensitivity in the direction of the other axis. The rotational vibration gyro has a drive weight (4), drive electrodes (3) for rotatinally vibrating the drive weight (4), a detection weight (5) composed of a pair of flat plate-like detection weights (5A) split along the X-axis and a pair of flat plate-like detection weights (5B) split along the Y-axis, the pairs of detection weights (5A, 5B) vibrating together with the drive weight (4) in response to Coriolis force, an anchor (6) for supporting the drive weight (4) and the detection weight (5), a pair of X-axis weight support springs (7A) and a pair of Y-axis weight support springs (7B), the pairs of support springs (7A, 7B) being arranged to straddle between the anchor (6) and the detection weight (5), a pair of X-axis weight connection springs (8A) and a pair of Y-axis weight connection springs (8B), the pairs of connection springs (8A, 8B) having a function to absorb rotational vibration and a function to transmit Coriolis force and interconnecting the drive weight (4) and the detection weight (5), a pair of X-axis detection electrodes (9A) for detecting displacement of the vibrating pair of detection weights (5A) split along the X-axis, and a pair of Y-axis detection electrodes (9B) for detecting displacement of the vibrating pair of detection weights (5B) split along the Y-axis.
Inventors:
SUGITA TETSURO (JP)
KOARAI MITSURU (JP)
YAMAMURA YUUICHI (JP)
KOARAI MITSURU (JP)
YAMAMURA YUUICHI (JP)
Application Number:
PCT/JP2008/002127
Publication Date:
February 11, 2010
Filing Date:
August 06, 2008
Export Citation:
Assignee:
PIONEER CORP (JP)
PIONEER MICRO TECHNOLOGY CORP (JP)
SUGITA TETSURO (JP)
KOARAI MITSURU (JP)
YAMAMURA YUUICHI (JP)
PIONEER MICRO TECHNOLOGY CORP (JP)
SUGITA TETSURO (JP)
KOARAI MITSURU (JP)
YAMAMURA YUUICHI (JP)
International Classes:
G01C19/56
Foreign References:
| JPH0791958A | 1995-04-07 | |||
| JP3342496B2 | 2002-11-11 | |||
| JP2007232710A | 2007-09-13 | |||
| JPH09325032A | 1997-12-16 | |||
| JPH11311521A | 1999-11-09 | |||
| JP2002515976A | 2002-05-28 | |||
| JP2000180177A | 2000-06-30 |
Attorney, Agent or Firm:
OCHIAI, MINORU (JP)
Minoru Ochiai (JP)
Minoru Ochiai (JP)
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