Three-dimensional Magnetic Field Distribution Around a Rectangular Permanent Magnet

With increasing applications of permanent magnetic materials in magnetic levitation system,comprehensive understanding of the field around the permanent magnetic materials becomes more and more important.For the stationary magnetic field of rectangular permanent magnet,the paper gave the spacial distributions of it by experimental method and analyzed the distribution characteristics in three dimensions.The numeric distributions of ponderances in magnetization direction and in vertical direction of magnetization of single magnet along different coordination were given.Furthermore,the paper worked out spatial distribution statures and characteristics of all the ponderances of repultive magnets and attractive magnets,and testified the overlapping attribute of magnetic vactor in space.