System and method for rotor blade health monitoring
First Claim
Patent Images
1. A system comprising:
- time of arrival (TOA) sensors; and
a controller comprisinga sensor level fuser configured for obtaining TOA signals from one or more of the TOA sensors, wherein the TOA signals are indicative of times of arrival of rotating rotor blades and fusing the TOA signals for obtaining combined features;
a processor configured for obtaining TOA signals from the respective TOA sensors and for determining initial features from the TOA signals; and
a feature level fuser configured for fusing the initial features, the combined features, and operational parameters of the rotating rotor blades for use in evaluating the health of the rotating rotor blades.
2 Assignments
0 Petitions
Accused Products
Abstract
A system for rotor blade health monitoring include time of arrival (TOA) sensors and a controller comprising a processor configured for obtaining TOA signals indicative of times of arrival of rotating rotor blades from the respective TOA sensors and for determining initial features from the TOA signals; and a feature level fuser configured for fusing the initial features received from the processor for use in evaluating health of the rotating rotor blades.
-
Citations
11 Claims
-
1. A system comprising:
-
time of arrival (TOA) sensors; and a controller comprising a sensor level fuser configured for obtaining TOA signals from one or more of the TOA sensors, wherein the TOA signals are indicative of times of arrival of rotating rotor blades and fusing the TOA signals for obtaining combined features; a processor configured for obtaining TOA signals from the respective TOA sensors and for determining initial features from the TOA signals; and a feature level fuser configured for fusing the initial features, the combined features, and operational parameters of the rotating rotor blades for use in evaluating the health of the rotating rotor blades. - View Dependent Claims (2, 3, 4)
-
-
5. A system comprising:
-
time of arrival (TOA) sensors; and a controller comprising a processor for obtaining TOA signals indicative of times of arrival of rotating rotor blades from the respective TOA sensors and for determining, from the TOA signals, initial features for use in evaluating the health of the rotating rotor blades; a sensor level fuser for obtaining combined features by fusing data obtained from the TOA sensors, a feature level fuser for fusing the times of arrival signals from the time of arrival sensors and the combined features, a physics modeler for receiving the initial features from the processor and estimating data regarding rotor blade crack length and rotor blade crack propagation time, a reliability modeler for estimating data regarding probability of the rotor blade crack, and a decision level fuser for fusing data received from the feature level fuser, the physics modeler, and the reliability modeler, for determining the health of the rotating rotor blades from the fused data. - View Dependent Claims (6, 7, 8)
-
-
9. A method comprising:
-
using sensors for determining a time of arrival (TOA) of rotating rotor blades; using an onsite monitor for determining operational parameters of the rotating rotor blades; and using a processor for determining a delta TOA using the TOA and an expected TOA;
determining a corrected delta TOA by normalizing the delta TOA for variations in the operational parameters of the rotating rotor blades;
obtaining initial features by processing the corrected delta TOA; and
obtaining crack length and crack propagation time of the rotating rotor blades by fusing the initial features and the operational parameters by a physics model. - View Dependent Claims (10, 11)
-
Specification