SYSTEM AND METHOD FOR MONITORING VIBRATION DATA

• US 20150046059A1
• Filed: 08/07/2013
• Published: 02/12/2015
• Est. Priority Date: 08/07/2013
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Kim, Kyusung, Hickenbottom, Chris, Lilly, David Daniel
• Granted Patent: US 9,292,975 B2
• Time in Patent Office: Days
• US Class Current: 701/99
• CPC Class Codes: G01H 1/003 of rotating machines G01H1/10 takes precedence
• CPC Class Codes: G01M 15/12 by monitoring vibrations
• CPC Class Codes: G01N 19/08 Detecting presence of flaws or irregularities
• CPC Class Codes: G07C 5/00 Registering or indicating the working of vehicles

Abstract

A system and method are provided for monitoring vibration data. A vehicle, for example, may include at least one engine component, a sensor coupled to the at least one engine component and configured to monitor a vibration of the at least one engine component, and a processor communicatively coupled to the sensor, the processor configured to determine a plurality of envelope spectrums based upon vibration data from the sensor, determine fault frequencies for each of the at least one engine component based upon a rotating speed of each of the at least one components, and monitor each envelope spectrum for changes at the determined fault frequencies.

Claims

1. A vehicle, comprising:

at least one engine component;

a sensor coupled to the at least one engine component and configured to monitor a vibration of the at least one engine component; and

a processor communicatively coupled to the sensor, the processor configured to;

determine a plurality of envelope spectrums based upon vibration data from the sensor;

determine fault frequencies for each of the at least one engine component based upon a rotating speed of each of the at least one engine component; and

monitor each envelope spectrum for changes at the determined fault frequencies.

2. The vehicle of claim 1, wherein the processor is further configured to determine the plurality of envelope spectrums based upon a minimum resonant frequency of the vibration data, a maximum resonant frequency of the vibration data, a step size for variable resonant frequency, a minimum bandwidth for an envelope window, a maximum bandwidth for the envelope window, and a step size for variable length of bandwidth.

3. The vehicle of claim 1, wherein the processor is further configured to monitor each envelope spectrum for changes at the determined fault frequencies by monitoring each fault frequency in each envelope spectrum and comparing a currently monitored envelope spectrum with a baseline envelope spectrum.

4. The vehicle of claim 3, wherein the processor is further configured to compare the currently monitored envelope spectrum with a previously monitored envelope spectrum.

5. The vehicle of claim 1, wherein the processor is further configured to monitor each envelope spectrum for changes at the determined fault frequencies by determining a predetermined number of peaks in each currently monitored envelope spectrum and, when one of the predetermined peaks corresponds to one of the fault frequencies, comparing the corresponding peak from the currently monitored envelope spectrum to a baseline envelope spectrum.

6. The vehicle of claim 1, wherein the processor is further configured to compare the corresponding peak from a currently monitored envelope spectrum to a previously monitored envelope spectrum.

7. The vehicle of claim 1, wherein the at least one engine component includes a bearing.

8. The vehicle of claim 1, wherein the processor is further configured to monitor sideband frequencies corresponding to the determined fault frequencies.

9. A method for monitoring health of a vehicle, comprising:

receiving, by a processor, vibration data from a vibration sensor;

determining, by the processor, a plurality of envelope spectrums to be analyzed based upon the vibration data;

determining, by the processor, a plurality of fault frequencies based upon a rotational speed of at least one engine component of the vehicle; and

monitoring, by the processor, the plurality of fault frequencies within each of the plurality of envelope spectrums.

10. The method of claim 9, wherein the monitoring further comprises:

determining a predetermined number of peaks in each of the plurality of envelope spectrums; and

tracking at least one of the predetermined peaks when the at least one of the predetermined peeks corresponds to one of the plurality of fault frequencies.

11. The method of claim 10, wherein the tracking further comprises comparing the at least one of the predetermined peaks to one of a baseline envelope spectrum.

12. The method of claim 10, wherein the tracking further comprises comparing the at least one of the predetermined peaks a previously monitored envelope spectrum.

13. The method of claim 9, wherein the monitoring further comprises tracking, in each of the plurality of envelope spectrums, each of the plurality of fault frequencies within the envelope spectrum.

14. The method of claim 13, wherein the tracking further comprises comparing the at least one of the predetermined peaks to one of a baseline envelope spectrum.

15. The method of claim 13, wherein the tracking further comprises comparing the at least one of the predetermined peaks a previously monitored envelope spectrum.

16. The method of claim 9, wherein the determining, by the processor, the plurality of envelope spectrums to be analyzed based upon the vibration data based further comprises determining the plurality of envelope spectrums to be analyzed based upon the vibration data based further comprises determining the based upon a minimum resonant frequency of the vibration data, a maximum resonant frequency of the vibration data, a step size for variable resonant frequency, a minimum bandwidth for an envelope window, a maximum bandwidth for the envelope window, and a step size for variable length of bandwidth.

17. A computer-readable medium which when executed by a processor cause the processor to:

determine a plurality of envelope spectrums based upon vibration data from a sensor;

determine fault frequencies for at least one engine component based upon a rotating speed of each of the at least one engine component; and

monitor each envelope spectrum for changes at the determined fault frequencies.

18. The computer-readable medium of claim 17, which when executed by the processor further cause the processor to determine the plurality of envelope spectrums based upon a minimum resonant frequency of the vibration data, a maximum resonant frequency of the vibration data, a step size for variable resonant frequency, a minimum bandwidth for an envelope window, a maximum bandwidth for the envelope window, and a step size for variable length of bandwidth.

19. The computer-readable medium of claim 17, which when executed by the processor further cause the processor to monitor each envelope spectrum for changes at the determined fault frequencies by monitoring each fault frequency in each envelope spectrum and comparing a currently monitored envelope spectrum with a baseline envelope spectrum.

20. The computer-readable medium of claim 17, which when executed by the processor further cause the processor to monitor each envelope spectrum for changes at the determined fault frequencies by determining a predetermined number of peaks in each currently monitored envelope spectrum and, when one of the predetermined peaks corresponds to one of the fault frequencies, comparing the corresponding peak from the currently monitored envelope spectrum to a baseline envelope spectrum.