The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2008
Filed:
Mar. 28, 2006
Mark W. Weber, Zimmerman, MN (US);
Mark W. Weber, Zimmerman, MN (US);
Honeywell International Inc., Morristown, NJ (US);
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.