Vibration signal model for fault diagnosis of sun gear in epicyclical gearboxes

Lun Zhang, Niaoqing Hu, Lei Hu, Fengshou Gu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Signal models of machinery components are helpful to understand influence and character of various fault modes without conducting costly and timeconsuming experiments; it also brings convenience to validate new fault diagnosis methods for scientist and engineers. Researchers have built models such as lumped parameter model and finite element model to study problem of interest. However, these models are time-consuming to simulate faults in epicyclical gearbox, some of them could not implant fault on specified gear tooth. In this paper, a simplified fault implantable signal model is established considering meshing regularity between given sun gear tooth and planet gear, as well as amplitude modulation effect caused by rotating of carrier. Theoretical derivations are validated through spectrum analysis of simulation signal, moreover, experimental data collected from fault-seeded and baseline experiments are analyzed to validate the model, computing time of new model and lumped parameter model are compared to show computational efficiency of the model. According to signal analysis and computing time comparison, the signal model proposed in this paper is effective and efficient.

LanguageEnglish
Pages13-18
Number of pages6
JournalInternational Journal of COMADEM
Volume20
Issue number3
Publication statusPublished - 1 Jul 2017

Fingerprint

Sun
Failure analysis
Gears
Gear teeth
Fault diagnosis
Vibration
Amplitude modulation
Signal analysis
Planets
Computational efficiency
Spectrum analysis
Machinery
Fault
Experiments
Engineers

Cite this

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title = "Vibration signal model for fault diagnosis of sun gear in epicyclical gearboxes",
abstract = "Signal models of machinery components are helpful to understand influence and character of various fault modes without conducting costly and timeconsuming experiments; it also brings convenience to validate new fault diagnosis methods for scientist and engineers. Researchers have built models such as lumped parameter model and finite element model to study problem of interest. However, these models are time-consuming to simulate faults in epicyclical gearbox, some of them could not implant fault on specified gear tooth. In this paper, a simplified fault implantable signal model is established considering meshing regularity between given sun gear tooth and planet gear, as well as amplitude modulation effect caused by rotating of carrier. Theoretical derivations are validated through spectrum analysis of simulation signal, moreover, experimental data collected from fault-seeded and baseline experiments are analyzed to validate the model, computing time of new model and lumped parameter model are compared to show computational efficiency of the model. According to signal analysis and computing time comparison, the signal model proposed in this paper is effective and efficient.",
keywords = "Epicyclical Gear, Fault Diagnosis, Signal Model, Sun Gear",
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Vibration signal model for fault diagnosis of sun gear in epicyclical gearboxes. / Zhang, Lun; Hu, Niaoqing; Hu, Lei; Gu, Fengshou.

In: International Journal of COMADEM, Vol. 20, No. 3, 01.07.2017, p. 13-18.

Research output: Contribution to journalArticle

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AU - Zhang, Lun

AU - Hu, Niaoqing

AU - Hu, Lei

AU - Gu, Fengshou

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AB - Signal models of machinery components are helpful to understand influence and character of various fault modes without conducting costly and timeconsuming experiments; it also brings convenience to validate new fault diagnosis methods for scientist and engineers. Researchers have built models such as lumped parameter model and finite element model to study problem of interest. However, these models are time-consuming to simulate faults in epicyclical gearbox, some of them could not implant fault on specified gear tooth. In this paper, a simplified fault implantable signal model is established considering meshing regularity between given sun gear tooth and planet gear, as well as amplitude modulation effect caused by rotating of carrier. Theoretical derivations are validated through spectrum analysis of simulation signal, moreover, experimental data collected from fault-seeded and baseline experiments are analyzed to validate the model, computing time of new model and lumped parameter model are compared to show computational efficiency of the model. According to signal analysis and computing time comparison, the signal model proposed in this paper is effective and efficient.

KW - Epicyclical Gear

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