A study on magnetically-levitated micro PM motor using micro magnetic bearings

采用微型磁力轴承的磁悬浮微型永磁电机的研究

• 批准号: 09650324
• 负责人: KOMORI Mochimitsu
• 金额: $ 2.11万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650324/
• 关键词: Micro magnetic bearing; PM motor; Magnetic levitation; Micro Machine; Micro actuator; Position control; 磁気軸受; マイクロ軸受

We have developed a magnetically levitated micro PM motor with a millimeter-sized cylindrical rotor. Two types of electromagnets are applied to the micro PM motors. And the dynamic characteristics of the micro PM motors were investigated. From the experimental results, it is found that the driving current ranges of these micro PM motors are small in comparison to other normal-sized PM motors. The micro PM motor with horseshoe-shaped electromagnets increases up to speeds higher than 【approximately equal】30000 rpm, which is very fast and marvelous. The driving current range for the micro PM motor with cylindrical electromagnets is very small compared to that for the motor with horseshoe-shaped electromagnets. The magnetic friction for the micro PM motor with cylindrical electromagnets is very smaller than that for the motor with horseshoe-shaped electromagnets. From these results, it is found that for high speed rotations the micro PM motor with horseshoe-shaped electromagnets is better than that with cylindrical electromagnets. From the standpoint of electric power consumption, the micro PM motor with cylindrical electromagnets is better than that with horseshoe-shaped electromagnets because of the very small driving current range. For quick responses, the micro PM motor with horseshoe-shaped electromagnets is better than that with cylindrical electromagnets. Using this characteristic, it is shown that the rotor speed of the micro PM motor with horseshoe-shaped electromagnets can be controlled.The micro PM motor may be applied to micro gyroscopes, mechanical sensors, and other applications. It is regarded as promising for micro mechatronics.

研制了一种毫米级圆柱转子磁悬浮永磁微电机。两种类型的电磁铁应用于微型永磁电机。研究了微型永磁电机的动态特性。从实验结果中，它被发现，这些微型永磁电机的驱动电流范围是小的相比，其他正常大小的永磁电机。带有马蹄形电磁铁的微型永磁电机的速度可高达[约等于]30000 rpm，这是非常快和了不起的。与马蹄形电磁铁的电机相比，圆柱形电磁铁的微型永磁电机的驱动电流范围非常小。圆柱形电磁铁永磁微电机的磁摩擦比马蹄形电磁铁永磁微电机的磁摩擦小得多。从这些结果中，它被发现，对于高速旋转的微型永磁电动机与马蹄形的电磁铁是优于与圆柱形的电磁铁。从电力消耗的角度来看，微型永磁电机与圆柱形电磁铁是优于马蹄形电磁铁，因为非常小的驱动电流范围。对于快速响应，马蹄形电磁铁的微型永磁电动机比圆柱形电磁铁更好。利用这一特性，马蹄形电磁铁永磁微电机的转子转速可以实现可控，可应用于微陀螺仪、机械传感器等领域。它被认为是有前途的微机电一体化。

项目成果

M.Komori and T.Yamane: "Dynamic characteristics of a millimeter-sized magnetic bearing with a cylindrical rotor"6th International symposium on magnetic bearings (Massachusetts Institute of Technology, Cambridge, MA, USA, August 5-7, 1998). 6巻. 152-161 (19

M.Komori 和 T.Yamane：“带有圆柱形转子的毫米级磁力轴承的动态特性”第六届磁力轴承国际研讨会（美国马萨诸塞州剑桥麻省理工学院，1998 年 8 月 5-7 日）。第 152-161 卷 (19)

M.Komori and T.Yamane: "Dynamic characteristics of a millimeter-sized magnetic bearing with a cylindrical rotor"6th International symposium on magnetic bearings (Massachusetts Institute of Technoligy, Cambridge, MA, USA, August 5-7, 1998. 152-161

M.Komori 和 T.Yamane：“带有圆柱转子的毫米级磁力轴承的动态特性”第六届磁力轴承国际研讨会（麻省理工学院，剑桥，马萨诸塞州，1998 年 8 月 5-7 日。152-

M.Komori and T.Yamane: "A prototype of a levitation-type PM motor with a millimeter-sized rotor"IEEE Transactions on Magnetics. 35, No.5. 4007-4009 (1999)

M.Komori 和 T.Yamane：“带有毫米级转子的悬浮式永磁电机的原型”IEEE Transactions on Magnetics。

T.Yamane and M.Komori: "Study on magnetically Ievitated micro motor"Proceedings of 8th MAGDA Conference (Hiroshima University, Higashi-Hiroshima, April, 1999. 112-114

T.Yamane 和 M.Komori：“磁悬浮微型电机的研究”第 8 届 MAGDA 会议论文集（广岛大学，东广岛，1999 年 4 月。112-114

M.Komori and T.Yamane: "Dynamic characteristics of a millimeter-sized magnetic bearing with a cylindrical rotor" Proc.of 5th International symposium on magnetic bearings(MIT,Cambridge,MA,USA. (1998)

M.Komori 和 T.Yamane：“带有圆柱转子的毫米级磁力轴承的动态特性”第五届国际磁力轴承研讨会论文集（麻省理工学院，剑桥，马萨诸塞州，美国。（1998）