A multiphysics coupled model for active aerostatic thrust bearings

Aguirre, Gorka; Al‐Bender, Farid; Brussel, Hendrik Van

doi:10.1109/aim.2008.4601747

Cited by 14 publications

(8 citation statements)

References 2 publications

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“…Hybrid active compensation methods are a combination of the two previously discussed methods. According to author knowledge, the main contributors in designing such a hybrid systems were Al-Bender, Aguirre and Van Brussel from KU Leuven University [38][39][40].…”

Section: Active Compensation Methodsmentioning

confidence: 99%

A Historical Review of Gas Lubrication: From Reynolds to Active Compensations

Lentini¹,

Moradi²,

Colombo³

2018

Tribol. Ind.

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Friction and wear are tribological phenomena that have produced significant economic damage and environmental issues throughout our history. Different kinds of lubricants and coatings have been employed in the attempt of reducing friction losses. Because of their remarkable performance, gas lubricated systems are characterized by almost zero friction and wear. For this reason, they can be utilized in applications where rolling and fluid bearings cannot, e.g., metrology, medical equipment and tool machine. This paper reviews the evolution of gas lubrication through history. The topography of the subject is described from its origins to how it was shaped over the centuries, trying to preserve the logical cause and effect relationship of the events. For the sake of consistency, the review considers only the key past contributions which are strictly related to gas lubrication.

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Section: Active Compensation Methodsmentioning

confidence: 99%

A Historical Review of Gas Lubrication: From Reynolds to Active Compensations

Lentini¹,

Moradi²,

Colombo³

2018

Tribol. Ind.

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“…close to the resolution limit of the sensor, and the step response is completely free from overshoot. Currently, optimum design and construction of this type of active air bearing are being investigated with the aid of a multi-physics design environment, which is developed for this purpose [28,29]. This same principle has been employed for the design and con- struction of active journal bearings for use in high speed, precision, electro-spindles for machine tool applications [24].…”

Section: Test (3)mentioning

confidence: 99%

On the modelling of the dynamic characteristics of aerostatic bearing films: From stability analysis to active compensation

Al‐Bender

2009

Precision Engineering

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a b s t r a c tDetermination of the static characteristics of air bearings constitutes the necessary first phase in a design problem, which determines general feasibility. In order to realize a successful application, a good knowledge and assessment of the dynamic behaviour is needed to complement the previous step. In a conventional, passive bearing application, dynamically stable behaviour should be ensured by overcoming the occurrence of self-excited vibrations; the so-called "pneumatic hammering". In active bearing applications, on the other hand, the dynamic bearing force, induced by actuation of the gap geometry or supply pressure, provides for a means of enhancing bearing static and dynamic performance, when integrated in a mechatronics system context. This paper presents on the one hand an overview of the methods used to model the dynamic characteristics of aerostatic films, deducing that the method of harmonic perturbation is often sufficient in providing a good estimate of the dynamic stiffness. This is confirmed by comparing theoretical results with dynamic response experiments. On the other hand, the general problem of active dynamic compensation is outlined and an application example is provided to show the high levels of performance achievable by employing this method.

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“…The surface of active aerostatic bearing deforms into concave shape when the actuator extends. The deflection produces a change in air gap pressure, as a result, a change in bearing force [13,[15][16][17]. Active control for aerostatic journal bearing is proposed where compensation is achieved through sensor mounted on the sleeve of bearing [18].…”

Section: Introductionmentioning

confidence: 99%

A New Type of Aerostatic Thrust Bearing Controlled by High-speed Pneumatic Valve and a Novel Pressure Transducer

Rehman

Guiyun

Wang

et al. 2019

IJAME

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The current research work presents a low cost, efficient and innovative active aerostatic thrust bearing which is controlled through a combination of the Arduino board, feedback transducers and high-speed valves. The purpose is to make low cost, compact active aerostatic thrust bearing with overall small dimensions and compact size. A prototype design is done in solid works with small dimensions and components are produced with the help of the high precision machining process. There are two high-speed electropneumatic valves which are controlled through pulse width modulation techniques. These high-speed electro-pneumatic valves modify the supply pressure of aerostatic bearing to achieve desired air height gap. There are two novel pressure sensors which provide a feedback signal for control. The test bench to perform experiments has been explained. The performance of the proposed aerostatic bearing is checked both in open loop and closed loop configuration with respect to static and dynamic conditions.

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A multiphysics coupled model for active aerostatic thrust bearings

Cited by 14 publications

References 2 publications

A Historical Review of Gas Lubrication: From Reynolds to Active Compensations

A Historical Review of Gas Lubrication: From Reynolds to Active Compensations

On the modelling of the dynamic characteristics of aerostatic bearing films: From stability analysis to active compensation

A New Type of Aerostatic Thrust Bearing Controlled by High-speed Pneumatic Valve and a Novel Pressure Transducer

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