Engineering and performance of a contactless linear slider based on superconducting magnetic levitation for precision positioning

Valiente–Blanco, Ignacio; Díez-Jiménez, Efrén; Pérez-Díaz, José-Luis

doi:10.1016/j.mechatronics.2013.07.011

Cited by 15 publications

(10 citation statements)

References 41 publications

(44 reference statements)

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“…The property tables obtained from the NIST database were used for G-10 fiberglass epoxy, 316 stainless steel, and 6061-T6 aluminum. The values were extrapolated using curve-fitting equations of the following form: log10 y = a + b(log10T) + c(log10T) 2 + d(log10T) 3 + e(log10T) 4 + f(log10T) 5 + g(log10T) 6 + h(log10T) 7 + i(log10T) 8 (1) where y represents the property, T is temperature in Kelvin, and the coefficients a, b, c, d, e, f, g, h, and i depend on each material and property. The coefficients used in the simulation are given in Table 2.…”

Section: Nonlinear Materials Properties: Cp and K Vs Temperaturementioning

confidence: 99%

“…The increased operational reliability and simplicity of cryogenic equipment has allowed their installation and successful operation onboard spacecraft. At the same time, the improved performance of cryogenic devices, such as sensors and cold electronics, has drastically expanded their use, thus creating new perspectives for space-based applications [1][2][3]. It is necessary to test all such components on the ground before launch, and accordingly, specific cold plates and cryostats need to be built and set-up.…”

Section: Introductionmentioning

confidence: 99%

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Design and Test of Cryogenic Cold Plate for Thermal-Vacuum Testing of Space Components

et al. 2019

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This paper proposes a novel cryogenic fluid cold plate designed for the testing of cryogenic space components. The cold plate is able to achieve cryogenic temperature operation down to −196 °C with a low liquid nitrogen (LN2) consumption. A good tradeoff between high rigidity and low thermal conduction is achieved thanks to a hexapod configuration, which is formed by six hinge–axle–hole articulations in which each linking rod bears only axial loads. Thus, there is not any stress concentration, which reduces the diameter of rod sections and reduces the rods’ thermal conduction. This novel design has a unique set of the following properties: Simple construction, low thermal conduction, high thermal inertia, lack of vibrational noise when cooling, isostatic structural behavior, high natural frequency response, adjustable position, vacuum-suitability, reliability, and non-magnetic. Additionally, the presented cold plate design is low-cost and can be easily replicated. Experimental tests showed that a temperature of at least −190 °C can be reached on the top surface of the cold plate with an LN2 consumption of 10 liters and a minimum vibration frequency of 115 Hz, which is high enough for most vibration tests of space components.

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Section: Nonlinear Materials Properties: Cp and K Vs Temperaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Test of Cryogenic Cold Plate for Thermal-Vacuum Testing of Space Components

et al. 2019

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“…Nevertheless, due to the intrinsic instability of permanent magnetic levitation [ 11 ], it is also necessary to apply auxiliary bearings to ensure the operation stability of the driven part, which would still cause the contamination of wear debris and cannot well fulfill the ultra-clean mixing of biomedical solutions. Fortunately, type-II high- T c superconducting levitation system can realize self-stable suspension in external inhomogeneous magnetic field [ 12 ]. Such type of superconductors has lots of microdefects and nonsuperconducting centers which allow the magnetic flux to enter in quantized packets surrounded by a supercurrent vortex and realize the flux pinning state [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Contactless Mechanical Power Transmission Through the High-Tc Superconducting Pinning Effect

Liu

et al. 2021

J Supercond Nov Magn

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Mechanical power transmission (MPT) components are almost indispensable for every engineering equipment with motions. In order to satisfy some rigorous requirements, such as contamination free and zero leakage in the mixing process of biomedical solutions, a contactless MPT mode was proposed in this study based on the high- T c superconducting flux pinning mechanism. It makes the stirring container with the driven part inside that can be totally isolated from the external environment. The physical principle of superconducting flux pinning effect was discussed firstly to explore a feasible structural scheme, which can completely restrain all the six degrees of freedom (DOFs) by the linkage of magnetic flux lines. Then, a measurement device was established to verify and investigate the proposed contactless MPT mode. The motion can be transferred synchronously from the superconducting driving part to the permanent magnet driven part since they are unified as an integrity through the pinned flux lines. The influence of driving speed, cooling clearance, and magnet arrangement on the transmitted torque was analyzed. The verified contactless MPT mode also has the advantages of self-stability and overload protection, which can avoid the drawbacks of traditional permanent magnetic transmission mode.

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“…In such environments, issues related to frictional surfaces in classical mechanisms are particularly important and drastically limit the equipment lifetime. Therefore, superconducting instruments are a very promising solution in fields like high-speed bearings [1][2][3][4], aerospace [5][6][7], space engineering [8,9], energy storage [10][11][12][13][14], wind turbines [15][16][17][18], systems or cryogenics [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Radial and axial stiffness of superconducting bearings based on YBCO single-domain bulks processed with artificial holes

Antončík

Lojka

Hlásek

et al. 2020

Supercond. Sci. Technol.

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Superconducting magnetic bearings are becoming more widespread, due to the unique properties they provide. Their efficiency is unparallel, there are no issues such as contact, friction, and wear. They require low or minimal maintenance, no lubrication and they work under extreme conditions (cryogenic temperatures, high vacuum). In this contribution, the influence of geometric properties of superconducting bulks on the performance of superconducting bearings was studied. The main focus was paid to load capacity, radial and axial stiffnesses. Two samples with a significantly higher aspect ratio compared to conventional bulks were prepared. One of these samples was synthesized with artificially created holes. The samples were prepared using top-seeded melt-growth process with an additional source of a liquid phase in the form of an underlaying pad. The original thickness of 16 mm of the samples with a diameter of 28 mm was repeatedly ground down. Levitation force and trapped field were measured after each grinding step. Using this approach, the dependence of properties of the bulks on their thickness, scaling of these properties with thickness and the influence that artificial holes can make on the properties of finished single domain bulks were studied. The maximum levitation force was greatly improved for bulks with thicknesses of 2-6 mm. Such data is of the utmost importance in the field of superconducting YBCO single domain bulk ceramics, as it allows for better understanding and further improvement of both the manufacturing process and real-world applications of these materials.

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Engineering and performance of a contactless linear slider based on superconducting magnetic levitation for precision positioning

Cited by 15 publications

References 41 publications

Design and Test of Cryogenic Cold Plate for Thermal-Vacuum Testing of Space Components

Design and Test of Cryogenic Cold Plate for Thermal-Vacuum Testing of Space Components

Contactless Mechanical Power Transmission Through the High-Tc Superconducting Pinning Effect

Radial and axial stiffness of superconducting bearings based on YBCO single-domain bulks processed with artificial holes

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