Bearing Prognostics Method Based on Entropy Decrease at Specific Frequency

An, Dawn; Kim, Nam Ho; Choi, Jooh

doi:10.2514/6.2016-1678

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…Similarly, Pan et al [117] propose the spectral entropy as an index for performance degradation assessment of bearing. A method based on entropy changes at specific frequency is applied to predicting remaining cycle before maintenance [118], in which degradation feature is extracted from decomposed signals into frequency domain. The vibration intensity of bearing has both random non-stationary and long-range dependent characteristics when a weak fault occurs.…”

Section: Other Typical Entropy Theories Application On Bearingmentioning

confidence: 99%

Related Entropy Theories Application in Condition Monitoring of Rotating Machineries

Liu

Zhi

Zhang

et al. 2019

Entropy

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Rotating machinery plays an important role in various kinds of industrial engineering. How to assess their conditions is a key problem for operating safety and condition-based maintenance. The potential anomaly, fault and failure information can be obtained by analyzing the collected condition monitoring data of the previously deployed sensors in rotating machinery. Among the available methods of analyzing sensors data, entropy and its variants can provide quantitative information contained in these sensing data. For implementing fault detection, diagnosis, and prognostics, this information can be utilized for feature extraction and selecting appropriate training data for machine learning methods. This article aims to review the related entropy theories which have been applied for condition monitoring of rotating machinery. This review consists of typical entropy theories presentation, application, summary, and discussion.

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Section: Other Typical Entropy Theories Application On Bearingmentioning

confidence: 99%

Related Entropy Theories Application in Condition Monitoring of Rotating Machineries

Liu

Zhi

Zhang

et al. 2019

Entropy

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“…Recently, the authors have developed a new approach based on the entropy decrease at specific frequencies. While the details are given in (An 2016), the process is briefly summarized here for convenience. The steps are illustrated in Figure 4, and is summarized as follows.…”

Section: New Approach Using Entropymentioning

confidence: 99%

“…In order to overcome this problem, the authors (An et al, 2016) have recently proposed a new method using the entropy decrease which is more suitable for the purpose of prognostics. The idea is based on the observation that the entropy decreases at certain specific frequencies as the fault progresses.…”

Section: Introductionmentioning

confidence: 99%

A New Prognostics Approach for Bearing based on Entropy Decrease and Comparison with existing Methods

et al. 2016

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In this paper, a new method is proposed for the bearing prognosis based on the energy entropy, in which the normalized energy in the frequency spectrum is calculated over the cycles, frequency band is selected that shows greater decrease relative to the others, and entropy is computed as a trending feature. As opposed to the traditional features, which exhibit noisy fluctuation, non-monotonic change or only an abrupt increase near the end of life, the proposed energy entropy shows the smooth and constant decrease over the cycles which may represent the degree of fault progression. In order to illustrate the advantage, four traditional features - RMS, kurtosis, MAS kurtosis and envelope and the new feature - energy entropy are examined and compared using the three cases of bearing data named FEMTO, IMS and LOCAL, all from the bearing life test.

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A model to determining the remaining useful life of rotating equipment, based on a new approach to determining state of degradation

Ramezani

Moini

Riahi

et al. 2020

J. Cent. South Univ.

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Bearing Prognostics Method Based on Entropy Decrease at Specific Frequency

Cited by 6 publications

References 8 publications

Related Entropy Theories Application in Condition Monitoring of Rotating Machineries

Related Entropy Theories Application in Condition Monitoring of Rotating Machineries

A New Prognostics Approach for Bearing based on Entropy Decrease and Comparison with existing Methods

A model to determining the remaining useful life of rotating equipment, based on a new approach to determining state of degradation

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