Digitally programmable bandwidth for vibratory rate gyroscope

Details Digitally programmable bandwidth for vibratory rate gyroscope Digitally programmable bandwidth for vibratory rate gyroscope

2005-03-10

2008-12-16

Chapman, John E (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

C702S145000

Reexamination Certificate

active

07464590

ABSTRACT:
A signal-processing circuit for a dual-axis vibratory rotation-rate sensor has a digitally programmable bandwidth. An analog-to-digital converter (ADC) converts analog sense signals to digital signals at a high sampling rate. The results of successive ADC conversions are accumulated for a user-programmable number of conversions. By accumulating a number of samples, the sense signals are averaged which improves the signal-to-noise ratio and smoothes the output signal. Alternatively, accumulating a smaller number of samples allows the user to improve the response time of the sensor, allowing the user to set the number of samples that are averaged enables the user to control the effective bandwidth of the sensor. The accumulated conversions are also are scaled by unit-specific calibration factors in order to accommodate for unit to unit variations, so that the rate output will be consistent across a number of sensors.

REFERENCES:
patent: 5237871 (1993-08-01), Henderson et al.
patent: 5987984 (1999-11-01), Artzner et al.
patent: 6276204 (2001-08-01), Townsend

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