Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Reexamination Certificate
2007-05-15
2007-05-15
Chapman, John E. (Department: 2856)
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
Reexamination Certificate
active
11188880
ABSTRACT:
A vibratory angular rate sensor comprises a vibrator having a vibrating element arranged to oscillate along a first direction, the element being arranged to further oscillate along a second direction perpendicular to the first direction when subjected to angular rate about a third direction perpendicular to the first and second directions. The vibrating element is caused to oscillate at a predetermined frequency along the first direction. An oscillation detector generates a voltage representing oscillations of the vibrating element along the second direction. A first synchronous detector synchronously detects a primary frequency component of the generated voltage using clock pulses of the predetermined frequency to produce an output signal. A second synchronous detector synchronously detects an odd-numbered harmonic of the generated voltage using clock pulses of the odd-numbered harmonic frequency. A residual odd-numbered harmonic component contained in the output signal of the first synchronous detector is cancelled with the detected odd-numbered harmonic.
REFERENCES:
patent: 5412204 (1995-05-01), Nakamura
patent: 5806364 (1998-09-01), Kato et al.
patent: 9-170927 (1997-06-01), None
patent: 10-93430 (1998-04-01), None
patent: 2002-139322 (2002-05-01), None
Ao Kenichi
Ito Hajime
Chapman John E.
Denso Corporation
Posz Law Group , PLC
LandOfFree
Vibratory angular rate sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vibratory angular rate sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vibratory angular rate sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3752906