Research and applications of active bearings: A state-of-the-art review

Breńkacz, Łukasz; Witanowski, Łukasz; Drosińska-Komor, Marta; Szewczuk-Krypa, Natalia

doi:10.1016/j.ymssp.2020.107423

Cited by 60 publications

(19 citation statements)

References 232 publications

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“…The life of sliding bearings will affect the life of the whole engine, and bearing wear is an important cause of bearing failure. The fluid characteristics of the bearing-lubricating oil film will affect the lubrication of the bearing and then influence the wear and life of the bearing [1][2][3][4][5]. In order to improve the reliability of the sliding bearings, it is necessary to fully grasp the relationship between the fluid characteristics of the bearing oil film and bearing wear, while also exploring the distribution of the lubricating oil film and the wear of the bearing under high-speed rotation.…”

Section: Introductionmentioning

confidence: 99%

Fluid Characteristics Analysis of the Lubricating Oil Film and the Wear Experiment Investigation of the Sliding Bearing

Du¹,

Chen

Zhang

2022

Coatings

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The sliding bearing is an important component in machines. The characteristics of the oil film fluid of the sliding bearing is the key factor affecting lubrication, which will affect the wear and reliability of the sliding bearing. Herein, the lubricating oil of the sliding bearing is studied, the oil film flow model considering the cavitation effect is established, the pressure and temperature distribution of the oil film under different rotational speeds is explored, and its influence on oil film pressure and temperature are analyzed. Furthermore, wear tests are carried out to measure the wear amount of the bearing bush under different rotational speeds, and the influence of the fluid characteristics of the lubricating oil film on bearing wear is explored. The simulation and experimental study in this paper can provide a reference for the design of sliding bearings.

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Section: Introductionmentioning

confidence: 99%

Fluid Characteristics Analysis of the Lubricating Oil Film and the Wear Experiment Investigation of the Sliding Bearing

Du¹,

Chen

Zhang

2022

Coatings

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“…Generally bearing control is very complicated due to the need for rapid changes of the system properties. Some scientific papers describing ways of controlling magnetic [53], hydrodynamic [23] and aerodynamic bearings [41] are available, but there is no literature [10] that would describe and comprehensively compare different types of optimization algorithms applied to determine the parameters of the PID controller operating in the control system of the active foil bearing. The issue addressed in the article paper utilizes various types of optimization algorithms, including stochastic, deterministic and hybrid ones, and shows what parameters of the PID controller have been determined with their use.…”

Section: Highlights Abstractmentioning

confidence: 99%

“…Using selected optimization methods, the best parameters of the PID controller were searched for. This process was based on predefined objective functions (6)- (9). In order to compare the applied optimization methods accurately and reliably, 10 simulations of the optimization of PID controller parameters for each algorithm were performed.…”

Section: Scheme Of Pid Controller Parameters Processmentioning

confidence: 99%

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Comparable analysis of PID controller settings in order to ensure reliable operation of active foil bearings

Witanowski¹,

Breńkacz²,

Szewczuk-Krypa³

et al. 2022

Eksploatacja i Niezawodność – Maintenance and Reliability

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In comparison to the traditional solutions, active bearings offer great operating flexibility, ensure better operating conditions over a wider range of rotational speeds and are safe to use. In order to ensure optimum bearing performance a bearing control system is used that adapts different geometries during device operation. The selection of optimal controller parameters requires the use of modern optimization methods that make it possible to quickly achieve the assumed parameters. This article presents the method that has been employed to select the parameters of a proportional integral derivative (PID) controller, in which both stochastic algorithms and hybrid methods have been compared. The results show that all of the used algorithms were able to reach the global optimum but only the hybrid algorithm was repeatable in all runs within a low value of the standard deviation. The best solution will be proposed in the future to control an active foil bearing. Analysing of this paper would help to prevent failures of active foil bearing used in the designed rotating machine.

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“…In addition, the modified contact conditions between the bumps and the sleeve and the use of additional springs change the stiffness and damping properties of the whole bearing [15,16]. In order to actively change the properties of foil bearings during their operation, more advanced designs are proposed, where smart materials, such as shape-memory materials, piezoelectric materials, or thermoelectric materials, are used [17][18][19]. Other structural modifications of GFBs have been presented in a number of papers [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

A Novel Measurement Approach to Experimentally Determine the Thermomechanical Properties of a Gas Foil Bearing Using a Specialized Sensing Foil Made of Inconel Alloy

et al. 2022

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Modern approaches dedicated to controlling the operation of gas foil bearings require advanced measurement techniques to comprehensively investigate the bearings’ thermal and thermomechanical properties. Their successful long-term maintenance with constant operational characteristics may be feasible only when the allowed thermal and mechanical regimes are rigorously kept. Hence, an adequate acquisition of experimental readings for the critical physical quantities should be conducted to track the actual condition of the bearing. The above-stated demand has motivated the authors of this present work to perform the thermomechanical characterization of the prototype installation of a gas foil bearing, applying a specialized sensing foil. This so-called top foil is a component of the structural part of the bearing’s supporting layer and composed of a superalloy, Inconel 625. The strain and temperature distributions were identified based on the readings from the strain gauges and integrated thermocouples mounted on the top foil. The measurements’ results were obtained for the experiments that represent the arbitrarily selected operational conditions of the tested bearing. Specifically, the considered measurement scenario relates to the operation at a nominal rotational speed, i.e., during the stable process, as well as to the run-up and run-out stages. The main objectives of the work are: (a) experimental proof for the described functionalities of the designed and manufactured specialized sensing foil that allow for the application of a novel approach to the bearing’s characterization, and (b) qualitative investigation of the relation between the mechanical and thermal properties of the tested bearing, using the measurements conducted with the newly proposed technical solution.

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Research and applications of active bearings: A state-of-the-art review

Cited by 60 publications

References 232 publications

Fluid Characteristics Analysis of the Lubricating Oil Film and the Wear Experiment Investigation of the Sliding Bearing

Fluid Characteristics Analysis of the Lubricating Oil Film and the Wear Experiment Investigation of the Sliding Bearing

Comparable analysis of PID controller settings in order to ensure reliable operation of active foil bearings

A Novel Measurement Approach to Experimentally Determine the Thermomechanical Properties of a Gas Foil Bearing Using a Specialized Sensing Foil Made of Inconel Alloy

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