自軸承馬達搭配軸向磁力軸承之三軸磁懸浮控制系統研製

Development of a Three-axis Magnetic Suspension System with a Self-Bearing Motor and a Thrust Actuator

徐肇鴻(Chao-Hung Hsu)

指導教授 ： 楊勝明

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2014年)

https://doi.org/10.6841/NTUT.2014.00114

摘要

傳統的磁懸浮馬達系統，為了使轉子能穩定懸浮於氣隙中央，通常必須使用兩組徑向磁力軸承以控制轉子的X、Y方向位移，並搭配一軸向磁力軸承以控制轉子的Z方向位移。本文延續先前磁懸浮馬達系統之研究，使用一永磁交流自軸承馬達及一組被動式徑向磁力軸承以取代傳統之兩組徑向磁力軸承以達到轉子懸浮的目的，軸向磁力軸承部分則不變。除了維持原先馬達的功能之外，自軸承馬達亦可以產生一組主動之X、Y方向的徑向力以控制轉子一端之位移，而被動式徑向磁力軸承則提供簡易的徑向回復力將轉子之另一端維持於氣隙之中。相較於傳統的磁懸浮系統，本文之系統具有體積較小、成本降低以及控制較容易等優點。本文利用有限元素軟體設計被動式徑向磁力軸承，對系統啟動流程進行分析設計，建立系統的軟硬體，整合自軸承馬達、軸向磁力軸承以及被動式徑向磁力軸承等，使三個原本獨立的系統可以搭配運作，最後以實驗驗證此系統的可行性。

關鍵字

磁懸浮馬達 ； 自軸承馬達 ； 軸向磁力軸承 ； 被動式磁力軸承

並列摘要

In the traditional magnetic levitation system, in order to realize the non-contact magnetic suspension, the system needs two radial magnetic bearings to control the rotor’s direction of X and Y axis, and with one thrust magnetic bearing to control the direction of Z axis. This essay continued levitation system using one self-bearing motor and one passive radial magnetic bearing to replace two conventional sets of radial magnetic bearings, without changing the part of magnetic bearing. The self-bearing motor cause one active set of displacement direction of X and Y axis to control the rotor’s displacement of one side, and the other side will be keep in the air gap by simple radial force which provided by passive magnetic bearing. The system proposed by the essay has the advantages of compactness, low cost and easily control. This essay used finite element analysis software to design the passive radial magnetic bearing and the process of the start of system, integrate the self-bearing motor, a thrust magnetic bearing, and a passive radial magnetic bearing to make three independent systems work with each other, and eventually verified the feasibility of the magnetic levitation system.

並列關鍵字

Bearingless Motor ； Self-Bearing Motor ； Thrust Actuator ； Passive Magnetic Bearing

參考文獻

[18] 周家緯，表面磁鐵型永磁同步自軸承馬達控制策略改善及驗證，碩士論文，國立臺北科技大學電機工程研究所，台北，2011。

[17] 林金鵬，永磁交流自軸承馬達與軸向磁力軸承之系統整合研製，碩士論文，國立臺北科技大學電機工程研究所，台北，2012。

[19] 張景翔，軸向磁力軸承最佳化設計與驗證，碩士論文，國立臺北科技大學電機工程研究所，台北，2010。

[2] M. A. Casemore and L. S. Stephens, “Actuator gains for a toothless permanent-magnet Self-bearing motor,” IEEE Transactions on Magnetics, vol. 35, no. 6, Nov. 1999, pp. 4482-4489.

[3] A. chiba, D. T. Power and M. A. Rahman, “Chacteristic of a bearingless induction motor,” IEEE Transactions on Magnetics, vol. 27, no. 6, Nov. 1991, pp. 5199-5201.