Research on early fault intelligent diagnosis for oil-impregnated cage in space ball bearing

Liao, Hui; Xie, Pengfei; Deng, Sier; Zhang, Wenhu; Shi, Lei; Zhao, Sen; Wang, Hengdi

doi:10.1016/j.eswa.2023.121952

Cited by 3 publications

(2 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the rolling bearing dynamics and finite element thermal analysis, Wang et al [24] studied the temperature distribution and its change rule of bearing assembly under different working conditions. Liao et al [25,26] conducted experimental research on the dynamic characteristics of a space ball bearing cage and analyzed the influence of the mass center trajectory of the cage on the dynamic friction torque of the bearing. The results show that the sudden change of the friction torque is caused by the fluctuation of the trajectory of the mass center, which is independent of the shape of the trajectory.…”

Section: Introductionmentioning

confidence: 99%

Research on the Relationship between Dynamic Characteristics and Friction Torque Fluctuation of CMGB under the Condition of Time-Varying Moment

Zhang,

Li,

Zhou

et al. 2023

Lubricants

Self Cite

View full text Add to dashboard Cite

In this paper, a dynamic simulation analysis model was established for CMGB (control moment gyroscope bearing) under the conditions of time-varying moment. The influences of the moment’s response time, axial preload, and working temperature on the dynamic characteristics and friction torque of CMGB were analyzed, and the relevant verification tests were conducted. The results show that the friction torque fluctuation of CMGB directly corresponds to the dynamic characteristics. The faster the response time of the time-varying moment, the larger the friction torque fluctuation of CMGB. The larger preload minimizes the difference in the ball’s loading state, which is the actual reason for reducing the friction torque fluctuation. Moreover, as the working temperature increases, the friction torque fluctuation of CMGB decreases.

show abstract

Section: Introductionmentioning

confidence: 99%

Research on the Relationship between Dynamic Characteristics and Friction Torque Fluctuation of CMGB under the Condition of Time-Varying Moment

Zhang,

Li,

Zhou

et al. 2023

Lubricants

Self Cite

View full text Add to dashboard Cite

show abstract

“…High-precision tapered roller bearings are widely used in aerospace, high-speed trains, precision machine tools, and other fields. They guarantee long-term high-precision, low vibration, and low noise operation of the industrial equipment [1][2][3]. The raceway surface of tapered roller bearings is the main working surface, which will bear the influence of high speed, high load, and high temperature during operation.…”

Section: Introductionmentioning

confidence: 99%

Study on Grinding-Affected Layer of Outer-Ring Inner Raceway of Tapered Roller Bearing

Cheng,

Jin,

Gao

et al. 2023

Materials

View full text Add to dashboard Cite

In the grinding of bearing raceways, the coupling effect between grinding force and heat in the contact area between the grinding wheel and the workpiece causes changes in the material structure and mechanical properties of the raceway surface layer, which can lead to the formation of a grinding-affected layer. The grinding-affected layer has a significant impact on the service performance and fatigue life of bearings. In order to improve the ground surface quality of the outer-ring inner raceway of tapered roller bearings and optimize the processing parameters, this paper presents a study on the grinding-affected layer. A finite element simulation model for grinding the outer-ring inner raceway of the tapered roller bearing was established. The grinding temperature field was simulated to predict the affected-layer thickness during raceway grinding. The correctness of the model was verified through grinding experiments using the current industrial process parameters of bearing raceway grinding. The research results indicate that the highest grinding temperature of the outer-ring inner raceway of the tapered roller bearing is located near the center of the grinding arc area on the thin end edge. As the workpiece speed and grinding depth decrease, the highest grinding temperature decreases, and the dark layer thickness of the grinding-affected layer decreases or even does not occur. The research results can provide theoretical guidance and experimental reference for grinding the raceway of tapered roller bearings.

show abstract

An approach to bearing fault diagnosis based on ensemble learning and case-based reasoning

Li,

Guo,

Dou

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

In response to the challenge of multiple fault types and complex diagnostic criteria in bearing fault diagnosis, a case reasoning method based on ensemble learning is proposed. The approach utilizes Case-Based Reasoning (CBR) to construct a case library for vibration-based features of rolling bearings and perform fault diagnosis. Moreover, addressing the issue of determining optimal feature weight ratios when retrieving similar cases in traditional case reasoning methods, a Random Forest algorithm combined with Bayesian Optimization is introduced. This integration allows for adaptive retrieval of similar cases, thereby enhancing the diagnostic capability for bearing faults. The effectiveness of this approach is validated through experimental analysis.

show abstract

Research on early fault intelligent diagnosis for oil-impregnated cage in space ball bearing

Cited by 3 publications

References 35 publications

Research on the Relationship between Dynamic Characteristics and Friction Torque Fluctuation of CMGB under the Condition of Time-Varying Moment

Research on the Relationship between Dynamic Characteristics and Friction Torque Fluctuation of CMGB under the Condition of Time-Varying Moment

Study on Grinding-Affected Layer of Outer-Ring Inner Raceway of Tapered Roller Bearing

An approach to bearing fault diagnosis based on ensemble learning and case-based reasoning

Contact Info

Product

Resources

About