Rotational accuracy of superconducting magnetic bearings

Hiromasa Fukuyama; Kazutoshi Seki; Takeshi Takizawa; Shigeru Endou; Masato Murakami; Hiroshi Takaichi

doi:10.1299/kikaic.62.270

Rotational accuracy of superconducting magnetic bearings

Hiromasa Fukuyama, Kazutoshi Seki, Takeshi Takizawa, Shigeru Endou, Masato Murakami, Hiroshi Takaichi

Research output: Contribution to journal › Article › peer-review

Abstract

Analytical and experimental study of rotational accuracy of superconducting magnetic bearings depending on the arrangements of permanent magnets is presented in this paper. With the aim of improving the rotational accuracy, the axial bearing magnet ring was divided into two rings in the radial direction and the radial bearing magnet sleeve was divided into three stacked rings in the axial direction. As a result, the magnetic flux density could be increased at the superconductor ring position, the static stiffness and the load capacity were increased, and hysteresis became large. Concerning the dynamic characteristics, the rotational accuracy of the shaft was improved remarkably and the shaft weighing 2.4 kg could rotate within 15μm peak to peak at 12 000 rpm.

Original language	English
Pages (from-to)	270-275
Number of pages	6
Journal	Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume	62
Issue number	593
DOIs	https://doi.org/10.1299/kikaic.62.270
Publication status	Published - 1996
Externally published	Yes

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

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title = "Rotational accuracy of superconducting magnetic bearings",

abstract = "Analytical and experimental study of rotational accuracy of superconducting magnetic bearings depending on the arrangements of permanent magnets is presented in this paper. With the aim of improving the rotational accuracy, the axial bearing magnet ring was divided into two rings in the radial direction and the radial bearing magnet sleeve was divided into three stacked rings in the axial direction. As a result, the magnetic flux density could be increased at the superconductor ring position, the static stiffness and the load capacity were increased, and hysteresis became large. Concerning the dynamic characteristics, the rotational accuracy of the shaft was improved remarkably and the shaft weighing 2.4 kg could rotate within 15μm peak to peak at 12 000 rpm.",

author = "Hiromasa Fukuyama and Kazutoshi Seki and Takeshi Takizawa and Shigeru Endou and Masato Murakami and Hiroshi Takaichi",

year = "1996",

doi = "10.1299/kikaic.62.270",

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journal = "Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C",

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TY - JOUR

T1 - Rotational accuracy of superconducting magnetic bearings

AU - Fukuyama, Hiromasa

AU - Seki, Kazutoshi

AU - Takizawa, Takeshi

AU - Endou, Shigeru

AU - Murakami, Masato

AU - Takaichi, Hiroshi

PY - 1996

Y1 - 1996

N2 - Analytical and experimental study of rotational accuracy of superconducting magnetic bearings depending on the arrangements of permanent magnets is presented in this paper. With the aim of improving the rotational accuracy, the axial bearing magnet ring was divided into two rings in the radial direction and the radial bearing magnet sleeve was divided into three stacked rings in the axial direction. As a result, the magnetic flux density could be increased at the superconductor ring position, the static stiffness and the load capacity were increased, and hysteresis became large. Concerning the dynamic characteristics, the rotational accuracy of the shaft was improved remarkably and the shaft weighing 2.4 kg could rotate within 15μm peak to peak at 12 000 rpm.

AB - Analytical and experimental study of rotational accuracy of superconducting magnetic bearings depending on the arrangements of permanent magnets is presented in this paper. With the aim of improving the rotational accuracy, the axial bearing magnet ring was divided into two rings in the radial direction and the radial bearing magnet sleeve was divided into three stacked rings in the axial direction. As a result, the magnetic flux density could be increased at the superconductor ring position, the static stiffness and the load capacity were increased, and hysteresis became large. Concerning the dynamic characteristics, the rotational accuracy of the shaft was improved remarkably and the shaft weighing 2.4 kg could rotate within 15μm peak to peak at 12 000 rpm.

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Rotational accuracy of superconducting magnetic bearings

Abstract

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