Three kinds of magnetic pole were selected with the forms of round,level and awl shape separately,by the testing of magnetic field and data regression analysis,the magnetic field intensity and magnetic force were obtained different heights of air crack.

• 对所选的圆头磁极、平头磁极以及锥头磁极3种不同磁系结构,通过磁场测试和回归分析,得出了3种磁极磁系在不同气隙高度的磁场强度和磁场力。