Development of a polygon scanner motor using single-axis controlled repulsive type magnetic bearing system

Issue title: Special Volume: Proceedings of the eleventh International Symposium on Applied Electromagnetics and Mechanics ISEM-Versailles ISEM 03

Article type: Research Article

Authors: Ohji, Takahisa^{a; *} | Ikeno, Shigeyuki^a | Amei, Kenji^a | Sakui, Masaaki^a | Yamada, Sotoshi^b

Affiliations: [a] Faculty of Engineering, Toyama University, 3190 Gofuku, Toyama 930-8555, Japan | [b] Institute of Nature and Environmental Technology, Kanazawa University, 2-40-20 Kodatsuno, Kanazawa 920-8667, Japan

Correspondence: [*] Corresponding author. Tel.: +81 76 445 6983; Fax: +81 76 445 6983; E-mail: [email protected]

Abstract: This paper reports on the configuration and performance characteristics of a repulsive type magnetic bearing system, which contains a vertical shaft type inner rotor with polygon mirror facets. Generally, low cost, high-speed rotation, power saving and rotational accuracy are important factors for the polygon mirror system. The experimental model introduced in this paper has achieved the stable rotation without contact at 50,000 rpm and low power consumption for a motor drive under low vacuum condition.

Keywords: magnetic bearings, permanent magnet, stiffness, polygon mirror, high-speed rotation, power-saving

DOI: 10.3233/JAE-2004-550

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 19, no. 1-4, pp. 139-144, 2004