Novel vibration diagnosis technology for industrial gearboxes

Harish N. Chandra, Len Gelman, David Manning-Ohren, Mahesh Patel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Misalignment is a common source of vibrations in rotating machinery such as gearboxes. In this paper novel short-time higher order chirp-Fourier transform (STHOCFT) is applied for misalignment detection of multi-stage gearboxes. STHOCFT is an adaptive technique and is capable of handling non-linear polynomial variation of instantaneous frequency in time. The proposed technique is suitable for both constant and variable speeds of the gearbox. The technology for the misalignment detection is based on the analysis of magnitudes of the bicoherence components based on STHOCFT involving low shaft orders. Separation between the features corresponding to normal and misalignment condition are quantified by Fisher Criterion. Using the Weighted Majority Rule based decision making technique; the estimate of the total probability of correct diagnosis is 100% for the estimated features.

LanguageEnglish
Title of host publication24th International Congress on Sound and Vibration, ICSV 2017
PublisherInternational Institute of Acoustics and Vibration, IIAV
Publication statusPublished - 2017
Externally publishedYes
Event24th International Congress on Sound and Vibration - Park Plaza Westminster Bridge Hotel, London, United Kingdom
Duration: 23 Jul 201727 Jul 2017
Conference number: 24
http://www.icsv24.org/ (Link to Congress Website)

Conference

Conference24th International Congress on Sound and Vibration
Abbreviated titleICSV24
CountryUnited Kingdom
CityLondon
Period23/07/1727/07/17
Internet address

Fingerprint

transmissions (machine elements)
misalignment
chirp
vibration
machinery
decision making
polynomials
estimates

Cite this

Chandra, H. N., Gelman, L., Manning-Ohren, D., & Patel, M. (2017). Novel vibration diagnosis technology for industrial gearboxes. In 24th International Congress on Sound and Vibration, ICSV 2017 International Institute of Acoustics and Vibration, IIAV.
Chandra, Harish N. ; Gelman, Len ; Manning-Ohren, David ; Patel, Mahesh. / Novel vibration diagnosis technology for industrial gearboxes. 24th International Congress on Sound and Vibration, ICSV 2017. International Institute of Acoustics and Vibration, IIAV, 2017.
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title = "Novel vibration diagnosis technology for industrial gearboxes",
abstract = "Misalignment is a common source of vibrations in rotating machinery such as gearboxes. In this paper novel short-time higher order chirp-Fourier transform (STHOCFT) is applied for misalignment detection of multi-stage gearboxes. STHOCFT is an adaptive technique and is capable of handling non-linear polynomial variation of instantaneous frequency in time. The proposed technique is suitable for both constant and variable speeds of the gearbox. The technology for the misalignment detection is based on the analysis of magnitudes of the bicoherence components based on STHOCFT involving low shaft orders. Separation between the features corresponding to normal and misalignment condition are quantified by Fisher Criterion. Using the Weighted Majority Rule based decision making technique; the estimate of the total probability of correct diagnosis is 100{\%} for the estimated features.",
keywords = "Bicoherence, Fisher Criterion, Gearbox, Misalignment, STHOCFT",
author = "Chandra, {Harish N.} and Len Gelman and David Manning-Ohren and Mahesh Patel",
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Chandra, HN, Gelman, L, Manning-Ohren, D & Patel, M 2017, Novel vibration diagnosis technology for industrial gearboxes. in 24th International Congress on Sound and Vibration, ICSV 2017. International Institute of Acoustics and Vibration, IIAV, 24th International Congress on Sound and Vibration, London, United Kingdom, 23/07/17.

Novel vibration diagnosis technology for industrial gearboxes. / Chandra, Harish N.; Gelman, Len; Manning-Ohren, David; Patel, Mahesh.

24th International Congress on Sound and Vibration, ICSV 2017. International Institute of Acoustics and Vibration, IIAV, 2017.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Novel vibration diagnosis technology for industrial gearboxes

AU - Chandra, Harish N.

AU - Gelman, Len

AU - Manning-Ohren, David

AU - Patel, Mahesh

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N2 - Misalignment is a common source of vibrations in rotating machinery such as gearboxes. In this paper novel short-time higher order chirp-Fourier transform (STHOCFT) is applied for misalignment detection of multi-stage gearboxes. STHOCFT is an adaptive technique and is capable of handling non-linear polynomial variation of instantaneous frequency in time. The proposed technique is suitable for both constant and variable speeds of the gearbox. The technology for the misalignment detection is based on the analysis of magnitudes of the bicoherence components based on STHOCFT involving low shaft orders. Separation between the features corresponding to normal and misalignment condition are quantified by Fisher Criterion. Using the Weighted Majority Rule based decision making technique; the estimate of the total probability of correct diagnosis is 100% for the estimated features.

AB - Misalignment is a common source of vibrations in rotating machinery such as gearboxes. In this paper novel short-time higher order chirp-Fourier transform (STHOCFT) is applied for misalignment detection of multi-stage gearboxes. STHOCFT is an adaptive technique and is capable of handling non-linear polynomial variation of instantaneous frequency in time. The proposed technique is suitable for both constant and variable speeds of the gearbox. The technology for the misalignment detection is based on the analysis of magnitudes of the bicoherence components based on STHOCFT involving low shaft orders. Separation between the features corresponding to normal and misalignment condition are quantified by Fisher Criterion. Using the Weighted Majority Rule based decision making technique; the estimate of the total probability of correct diagnosis is 100% for the estimated features.

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KW - Misalignment

KW - STHOCFT

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M3 - Conference contribution

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ER -

Chandra HN, Gelman L, Manning-Ohren D, Patel M. Novel vibration diagnosis technology for industrial gearboxes. In 24th International Congress on Sound and Vibration, ICSV 2017. International Institute of Acoustics and Vibration, IIAV. 2017