Systems and methods for monitoring angle random walk
AssigneeHoneywell International Inc.
InventorsLee K. Strandjord, Norman Gerard Tarleton, Darryl G. Busch
Life of this patent
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Abstract
A gyroscope for determining an angular rate output. The gyroscope includes a first demodulator configured to demodulate an angular rate measurement at a first bias modulation frequency to determine the angular rate signal and a second demodulator configured to demodulate the angular rate measurement at a second bias modulation frequency to provide a signal with ARW information. The gyroscope further includes an ARW estimator that provides an output that is proportional to ARW that is then stored in a memory. The second bias modulation frequency is an even order harmonic of the first bias modulation frequency.
Claims18
A gyroscope for determining an angular rate signal, the gyroscope comprising:
- a first component configured to demodulate an angular rate measurement at a first modulation frequency to determine the angular rate signal;
- a second component configured to demodulate the angular rate measurement at a second modulation frequency to provide a signal with angle random walk (ARW) information;
- and
- a third component configured determine the angular rate signal based on the angular rate measurement demodulated by the first and second components.
A method for determining an angular rate signal of a gyroscope, the method comprising:
- demodulating an angular rate measurement at a first modulation frequency to determine the angular rate signal;
- demodulating the angular rate measurement at a second modulation frequency to provide a signal with angle random walk (ARW) information;
- and
- determining the angular rate signal based on the angular rate measurement demodulated using the first and second modulation frequencies.
A system for determining an angular rate signal of a gyroscope, the system comprising:
- means for demodulating an angular rate measurement at a first modulation frequency to determine the angular rate signal;
- means for demodulating the angular rate measurement at a second modulation frequency to provide a signal with angle random walk (ARW) information;
- and
- means for determining the angular rate signal based on the angular rate measurement demodulated using the first and second modulation frequencies.
Dependencies are inferred from the claim text.