Rate sensitive blanking of a path length control circuit in a gyroscope
AssigneeHoneywell International Inc.
InventorsFrancis J. Judson, Alan Bruce Touchberry, Stephen M. Baker, Craig A. Galbrecht
Life of this patent
Estimating the term…
Abstract
A method and system for rate sensitive blanking in a path length control circuit of a gyroscope is provided. The method comprises determining an angular rate of the gyroscope, detecting a zero rate of the gyroscope where one or more single beam signals occur, and determining one or more blanker positions based on the zero rate. A blanker pulse is generated at the blanker positions such that the path length control circuit suspends operation when the one or more single beam signals occur.
Claims19
A method for rate sensitive blanking in a path length control circuit of a gyroscope, the method comprising:
- determining a dither rate and an inertial rate of the gyroscope;
- detecting a zero rate of the gyroscope where one or more single beam signals occur, wherein the zero rate occurs when the sum of the dither rate and the inertial rate is about zero;
- determining one or more blanker positions based on the zero rate;
- and
- generating a blanker pulse at the one or more blanker positions such that the path length control circuit suspends operation when the one or more single beam signals occur.
A system for rate sensitive blanking in a path length control circuit of gyroscope, the system comprising:
- at least one processor;
- and
- a computer readable medium having instructions stored thereon executable by the processor to perform a method for rate sensitive blanking, the method comprising:
- receiving a laser intensity monitor signal having one or more single beam signal components;
- receiving a dither pick-off signal representing the angle of dither displacement;
- calculating a dither rate from the dither pick-off signal;
- receiving an inertial sensor signal from the gyroscope;
- calculating an inertial rate from the dither rate and the inertial sensor signal;
- determining one or more blanker positions where the one or more single beam signal components occur using the inertial rate;
- and
- generating a blanker pulse at the blanker positions such that the path length control circuit suspends operation when the one or more single beam signal components occur.
Dependencies are inferred from the claim text.