Title :
Three-dimensional magnetic field analysis of micromotor by fast Fourier transform
Author :
Zhang, Mingsheng ; Cai, Bingcu ; Zhao, Xiaolin ; Wang, Zongguang
Author_Institution :
Inf. Storage Res. Center, Shanghai Jiaotong Univ., China
fDate :
9/1/1999 12:00:00 AM
Abstract :
An analysis method based on FFT (Fast Fourier Transforms) for the three-dimensional magnetic field of a micromotor is presented. The magnetic field and the static magnetic force between stator and rotor of the micromotor can be calculated by using a pair of Fourier transforms and some spatial filtering. Analysis results show that the field and the static magnetic force drop off sharply with increasing gap between rotor and stator, and the static magnetic force is much larger than the weight of rotor
Keywords :
fast Fourier transforms; machine theory; magnetic fields; magnetic forces; micromotors; permanent magnet motors; rotors; stators; 3D magnetic field analysis; FFT; PM axial-field micromotor; fast Fourier transform; micromotor; rotor; spatial filtering; static magnetic force; stator; three-dimensional magnetic field; Fast Fourier transforms; Fourier transforms; Magnetic analysis; Magnetic fields; Magnetic flux; Magnetic forces; Micromotors; Permanent magnets; Soft magnetic materials; Stators;
Journal_Title :
Magnetics, IEEE Transactions on
