Design and Basic Characteristics of Multi-Consequent-Pole Bearingless Motor With Bi-Tooth Main Poles
Design and Basic Characteristics of Multi-Consequent-Pole Bearingless Motor With Bi-Tooth Main Poles
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DOI：
10.1109/tmag.2009.2018652
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发表时间：
2009-05
影响因子：
2.1
通讯作者：
H. Sugimoto;K. Kamiya;R. Nakamura;J. Asama;A. Chiba;T. Fukao
中科院分区：
文献类型：
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作者：
H. Sugimoto;K. Kamiya;R. Nakamura;J. Asama;A. Chiba;T. Fukao
提出了一种适用于低速旋转的多顺极无轴承电机。无轴承电机可用于特定条件下的摆动台（或平台）。在径向x-y方向上主动控制两个自由度（2DOF）。需要间隙传感器来控制每个DOF。虽然2DOF无轴承电机几乎具有扁平转子，使得转子的轴向长度很小，但是该装置需要间隙传感器及其目标。本文提出了一种新型的定子结构，并考虑了在定子上安装差距传感器的设计过程。进行了三维有限元分析。评价径向悬浮力相对于转子旋转角位置的振幅脉动和方向误差。两台机器与传统的定子和建议的定子进行了测试和比较。通过实验验证，表明该机器具有良好的性能。
A multi-consequent-pole bearingless motor which is adapted to low speed rotation is presented. The bearingless motor can be used in swinging stages (or platforms) under specific conditions. Two degrees of freedom (2DOF) are actively controlled in the radial x-y directions. A gap sensor is required to control each DOF. Although 2DOF bearingless motors almost have a flat rotor so that axial length of the rotor is small, the device needs gap sensors and its target. In this paper, a novel stator structure is proposed and a design procedure considers the installation of the gap sensors on the stator. Three dimensional finite element analyses are carried out. An amplitude pulsation and a direction error of the radial suspension force with respect to the rotor rotational angular position are evaluated. Two machines with a conventional stator and the proposed stator are tested and compared. It is shown the proposed machine has beneficial performance by experimental verification.