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US 11,536,706 B2Granted
Active oil debris monitor phase angle calculation and monitoring system
AssigneeRaytheon Technologies Corporation
InventorsSheridon Everette Haye, Edward Thomas Rocco
Life of this patent
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Abstract
A method for actively calculating and monitoring the oil debris monitor phase angle includes sensing a noise from an in-line oil debris monitor sensor in an oil flow path, generating a polar plot of an I and Q channel data from only the noise. Linear regression of noise is then utilized from the I and Q channel data for calculating a slope of regression form the linear regression and converting the slope to a phase angle.
Claims19
A method for actively calculating and monitoring oil debris monitor phase angle in an oil system, comprising:
- sensing a noise from an in-line oil debris monitor sensor in a flow of oil in an oil flow path of the oil system;
- generating a polar plot of an I and Q channel data from only the noise;
- identifying a multiple of noise peaks in the polar plot;
- determining a linear regression of the noise peaks;
- calculating a slope of regression from the linear regression;
- converting the slope to a calculated phase angle;
- and
- comparing the calculated phase angle to a known phase angle for the oil debris monitor sensor to determine if the calculated phase angle is stable and therefore that the oil system is functioning properly, or the calculated phase angle is unstable and the oil system needs maintenance.
5 more elements
An oil system for a gas turbine engine, comprising:
- an oil flow path;
- an in-line oil debris monitor sensor for sensing a noise in a flow of oil along the oil flow path;
- and
- a control system in communication with the in-line oil debris monitor sensor and configured to calculate a slope of a linear regression from the noise;
- convert the slope to a calculated phase angle;
- and compare the calculated phase angle to a known phase angle of the oil debris monitor sensor to determine if the calculated phase angle is stable and therefore that the oil system is functioning properly, or the calculated phase angle is unstable and the oil system needs maintenance.
3 more elements
Dependencies are inferred from the claim text.