A Novel Rotating Magnetic Field Generator for Driving Magnetic Micro-Machine

Author

Zhe, Wang ; Yang, Yu ; Qiuliang, Wang ; Tao, Song

Author_Institution

Dept. of Biomed. Eng., Chinese Acad. of Sci., Beijing

Volume

18

Issue

2

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

887

Lastpage

890

Abstract

In order to make magnetic micro-machine swim more flexibly, we designed a rotating magnetic field generator with tunable angular frequency and magnetic flux density in arbitrary spatial plane by computation and simulation. A device which consists of power supply and three pairs of Helmholtz coils which are pair-wise orthogonal would be applied. Triphase sinusoidal currents were chosen to obtain a rotating magnetic field with an arbitrary rotation axis. The magnetic flux density, angular frequency and rotation axis can be modulated by tuning the amplitude and frequency of each phase current. The device can achieve a rotating magnetic field with arbitrary rotation axis to drive magnetic micro-machine. And through driving experiments, the generator can rotate magnetic micro-machine and move.

Keywords

magnetic fields; micromechanical devices; permanent magnet machines; small electric machines; Helmholtz coils; arbitrary rotation axis; arbitrary spatial plane; magnetic flux density; magnetic micromachine; permanent magnet; phase current; power supply; rotating magnetic field generator; triphase sinusoidal currents; tunable angular frequency; Magnetic micro-machine; permanent magnet; rotating magnetic field;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2008.922243

Filename

4520006