Rotating machinery monitoring system
First Claim
Patent Images
1. A method for monitoring rotating component comprising:
- an electronic control unit (ECU) receiving a sensor signal from a sensor apparatus, wherein the sensor signal comprises a continuous waveform representative of a sensor output;
retaining the continuous waveform in a memory of the ECU; and
isolating at least one of at least one characteristic and at least one period of the waveform and analyzing the at least one of at least one characteristic and at least one period and thereby determining an occurrence of a blade strike event using the ECU by determining a similarity measure between a reference period and an isolated period of the continuous waveform, and determining if the similarity measure exceeds a threshold, the similarity measure including at least one of a vector-time domain distance, a spectral distance, and a correlation distance.
3 Assignments
0 Petitions
Accused Products
Abstract
A method for monitoring rotating component includes receiving a continuous waveform sensor signal from a sensor apparatus, retaining the continuous waveform in a memory, and isolating at least one characteristic and/or at least one period of the waveform. The isolated characteristic and/or period is analyzed thereby determining the presence of a waveform anomaly.
25 Citations
14 Claims
-
1. A method for monitoring rotating component comprising:
-
an electronic control unit (ECU) receiving a sensor signal from a sensor apparatus, wherein the sensor signal comprises a continuous waveform representative of a sensor output; retaining the continuous waveform in a memory of the ECU; and isolating at least one of at least one characteristic and at least one period of the waveform and analyzing the at least one of at least one characteristic and at least one period and thereby determining an occurrence of a blade strike event using the ECU by determining a similarity measure between a reference period and an isolated period of the continuous waveform, and determining if the similarity measure exceeds a threshold, the similarity measure including at least one of a vector-time domain distance, a spectral distance, and a correlation distance. - View Dependent Claims (2)
-
-
3. A method for monitoring rotor blades comprising:
-
an electronic control unit (ECU) receiving a sensor signal from a sensor apparatus, wherein the sensor signal comprises a continuous waveform representative of a sensor output; comparing a period of the received sensor signal to a reference period using the ECU and determining a similarity measure between the received period of the sensor signal and the reference period, the similarity measure including at least one of a vector-time domain distance, a spectral distance, and a correlation distance; and determining a presence of a blade strike based on a difference between the reference period and the received waveform. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A gas turbine engine comprising:
-
a compressor section; a combustor section fluidly connected to the compressor section; a turbine section fluidly connected to the combustor section; wherein each of the compressor section and the turbine section includes a plurality of rotors, each rotor having a plurality of radially outward protruding rotor blades; an engine case disposed about the compressor section, the combustor and the turbine section; at least one sensing system disposed within sensing distance of a rotor; and a controller connected to the sensing system and operable to receive a full waveform output from the sensing system; wherein the controller further includes a memory operable to cause the controller and the sensing system to perform the steps of receiving a sensor signal from the sensing system, wherein the sensor signal comprises a continuous waveform representative of a sensor output; comparing the received sensor signal to at least a reference period using the controller and determining a similarity measure between the received period of the sensor signal and the reference period, the similarity measure including at least one of a vector-time domain distance, a spectral distance, and a correlation distance; and determining a presence of a blade strike event based on a difference between the reference period and the received signal.
-
-
13. A gas turbine engine comprising:
-
a compressor section; a combustor section fluidly connected to the compressor section; a turbine section fluidly connected to the combustor section; wherein each of the compressor section and the turbine section includes a plurality of rotors, each rotor having a plurality of radially outward protruding rotor blades; an engine case disposed about the compressor section, the combustor and the turbine section; at least one sensing system disposed within sensing distance of a rotor; and a controller connected to the sensing system and operable to receive a full waveform output from the sensing system; wherein the controller further includes a memory operable to cause the controller and the sensing system to perform the steps of receiving a sensor signal from the sensing system, wherein the sensor signal comprises a continuous waveform representative of a sensor output; comparing the received sensor signal to at least a reference period, wherein the reference period is one of a static period stored in a memory, a received period from a previous rotation of a corresponding rotor, a combination of a received period from at least two previous rotations of a corresponding rotor, a received period from a future rotation of the corresponding rotor, a combination of received periods from at least two future rotations of the corresponding rotor, and a combination of a received period from at least one previous rotation of the corresponding rotor and a received period from at least one future rotation of the corresponding rotor; and determining a presence of a blade strike event based on a difference between the reference period and the received signal. - View Dependent Claims (14)
-
Specification