Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Reexamination Certificate
2008-07-22
2008-07-22
Kwok, Helen C. (Department: 2856)
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
C073S504120
Reexamination Certificate
active
07401515
ABSTRACT:
Adaptive circuits and methods for reducing vibration-induced bias errors in inertial sensors. An adaptive circuit for reducing vibration or shock induced errors in an inertial sensor having a proof mass and sense electrode may include a sense bias voltage source, a charge amplifier, a device for detecting and/or anticipating an external vibration or shock on the inertial sensor, and a device for selectively dampening the proof masses and/or adjusting the gain sensitivity of the charge amplifier in response to an external vibration or shock on the inertial sensor. A dampening resistive element may be provided to dampen the proof mass motion in response to an external vibration or shock on the inertial sensor. Alternatively, or in addition, the gain sensitivity of the rate signal outputted by the charge amplifier can be adjusted in response to an external vibration or shock on the inertial sensor. During operation, the dampening and/or gain sensitivity can be adjusted to prevent signal saturation or clipping from occurring in the sense electronics, allowing the inertial sensor to continue functioning during periods of vibration or shock.
REFERENCES:
patent: 4694696 (1987-09-01), Hojo et al.
patent: 5463233 (1995-10-01), Norling
patent: 5672949 (1997-09-01), Ward
patent: 5892153 (1999-04-01), Weinberg et al.
patent: 6079272 (2000-06-01), Stell et al.
patent: 6114794 (2000-09-01), Dhuler et al.
patent: 6164134 (2000-12-01), Cargille
patent: 6262512 (2001-07-01), Mahadevan
patent: 6275320 (2001-08-01), Dhuler et al.
patent: 6307202 (2001-10-01), Manalis et al.
patent: 6327909 (2001-12-01), Hung et al.
patent: 6360601 (2002-03-01), Challoner et al.
patent: 6467346 (2002-10-01), Challoner et al.
patent: 6498996 (2002-12-01), Vallot
patent: 6598475 (2003-07-01), Pinson
patent: 6653239 (2003-11-01), Lebouitz
patent: 6768412 (2004-07-01), Becka et al.
patent: 6837108 (2005-01-01), Platt
patent: 6900702 (2005-05-01), Youngner et al.
patent: 2002/0135414 (2002-09-01), McCall et al.
patent: 2005/0104693 (2005-05-01), Youngner
patent: 2005/0133479 (2005-06-01), Youngner et al.
Honeywell International , Inc.
Kwok Helen C.
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