Study on the rotational speed of bearing cage based on ultrasonic measurement

Liu, Zhixiang; Xu, Cong; Li, Meng; Wang, Qi; Liu, Heng

doi:10.1177/1464419317697855

Cited by 10 publications

(10 citation statements)

References 11 publications

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“…It shows that the roller speed is almost half of the rotation speed of inner raceway. The analyzed result is consistent with the theoretical analysis being presented in reference [12].…”

Section: Experiments Processsupporting

confidence: 91%

“…It illustrates that the cage speed is determined by the integration of revolution and rotation motion of roller. The reference [12] defined the cage slip:…”

Section: Measurement Methodsmentioning

confidence: 99%

“…However, the optical method can not work normally when the bearing is lubricated with the oil. Stress analysis [9], [10] and ultrasonic methods [11], [12] can detect cage slip. However, the stress analysis method needs to modify bearing structure.…”

Section: Introductionmentioning

confidence: 99%

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Development of a Novel Detection Method to Measure the Cage Slip of Rolling Bearing

Zhan¹,

Ma²,

Li³

et al. 2020

IEEE Access

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A novel, non-contacted method is proposed to determine the cage slip of rolling bearing. Findings show that the roller and inner raceway can generate weak magnetic field (WMF). The WMF detection technology is introduced into the measurement domain of cage slip. The feature frequency of a roller and inner raceway, which reflect the cage slip, can be extracted simultaneously by the WMF sensor output signal. Here, the roller shares the same feature frequency with the cage. Compared with the traditional optical detection method, the proposed method does not require any pre-processing for rolling bearing. The cage slip is detected under different work conditions. The cage slip, which is determined by the proposed method, is consistent with that of the traditional optical method. It shows that the proposed method can be used to detect cage slip of rolling bearing. INDEX TERMS Cage slip, feature frequency, optical method, rolling bearing, weak magnetic field.

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“…It shows that the roller speed is almost half of the rotation speed of inner raceway. The analyzed result is consistent with the theoretical analysis being presented in reference [12].…”

Section: Experiments Processsupporting

confidence: 91%

“…It illustrates that the cage speed is determined by the integration of revolution and rotation motion of roller. The reference [12] defined the cage slip:…”

Section: Measurement Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Development of a Novel Detection Method to Measure the Cage Slip of Rolling Bearing

Zhan¹,

Ma²,

Li³

et al. 2020

IEEE Access

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show abstract

“…Equation (10) indicates that if the frequency of some IMF is smaller than ðf r Á ZÞ=2, the index of the IMF is the threshold index k th . Then, the first k th modes are forced to be zero, and the remaining modes are reconstructed to obtain the de-noised signal.…”

Section: Filtered Methods Of Detection Signalmentioning

confidence: 99%

“…6 However, the method is not feasible when the tested bearing is the grease lubricated bearing. The stress analytical 7,8 and ultrasonic methods 9,10 are also developed to study the cage slip. However, the bearing structure has to be modified for the stress analytical method.…”

Section: Introductionmentioning

confidence: 99%

Study on the cage slip of rolling bearing using a non-contact method

Zhan

et al. 2020

Structural Health Monitoring

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In this article, a novel, non-contact method is proposed to detect cage slip of rolling bearing. The proposed method can obtain the speed signal of cage and inner raceway by the introduction of weak magnetic field detection technology simultaneously. Meanwhile, to enhance the identified accuracy of cage slip, an adaptive filtering method is developed to suppress noise in weak magnetic field sensor output signal. The method adopts complementary complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) to decompose the weak magnetic field sensor output signal into a set of intrinsic mode functions adaptively. The intrinsic mode functions contain noisy component of detection signal (noisy intrinsic mode functions) as well as corresponding signal component of the roller and inner raceway (signal intrinsic mode functions). The noisy- and signal intrinsic mode functions are identified by the development of reconstruction criterion. The criterion is determined based on upper boundary of rotational frequency of roller under pure rolling conditions. Then, the noisy intrinsic mode functions are forced to zero, and signal intrinsic mode functions are reconstructed to extract the speed information of roller and inner raceway. An experiment system is developed to verify the effectiveness of proposed method. The experiment result shows that the cage slip decreases with the increment in load under the given speed conditions and increases with the increment in speed under the given load conditions, as well as the cage slip is more serious under given no-load conditions. It shows that the weak magnetic field detection technology can be used to detect the cage slip of rolling bearing.

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Statistical and sensitivity analysis of ultrasound signals for effective condition monitoring of electro-motors using industrial approach

Mobki,

Nia,

Azizi

2024

Discov Appl Sci

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This paper researches the importance of ultrasound methodology for swiftly detecting faults in electric motors and rotating machines. The primary focus of this research is on the intricate signal processing of ultrasound signals from both faulty and fault-free electro-motors. The principal goal is to conduct a comprehensive statistical investigation into signal factors, examining the effects of defect progression on the factors associated with continuously operating faulty electro-motors. In addition to the statistical analysis, this study explores the envelope-frequency spectrum of the signal under both healthy and defective conditions, employing the envelope method alongside Hilbert transformation. The objective is to thoroughly scrutinize the dynamic changes in ultrasound waveform and envelope spectrum of defective states, considering diverse degrees of defect severity over an extended time span. Moreover, the paper meticulously tracks the trajectory of factor changes over a 40-day operational period of a defective electro-motor. Additionally, the study delves into the sensitivity of the ultrasound method to impulse-wise shocks, which are recurrently observed in ultrasound signals, leading to deviations in certain signal factors from their established healthy thresholds. In response to this challenge, this paper conducts a particular analysis of signal factor sensitivity to impulse-wise noises, identifying robust factors that serve as reliable tools for firm condition monitoring. These identified factors are then presented as invaluable contributors to ensuring the precision and reliability of condition monitoring, especially in the presence of disruptive impulse-wise noises.

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Study on the rotational speed of bearing cage based on ultrasonic measurement

Cited by 10 publications

References 11 publications

Development of a Novel Detection Method to Measure the Cage Slip of Rolling Bearing

Development of a Novel Detection Method to Measure the Cage Slip of Rolling Bearing

Study on the cage slip of rolling bearing using a non-contact method

Statistical and sensitivity analysis of ultrasound signals for effective condition monitoring of electro-motors using industrial approach

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