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导出相位角α与夹角为θ的两相交磁场合成的旋转磁场的一般关系式 ,得出提供两相交磁场的Π形电磁轭也能在工件中产生旋转磁场的结论。它的瞬间磁场B(t)是磁感应强度峰值Bm,α和θ的函数 ;而该电磁轭的提升力 F则是Bm 和磁轭铁心截面S的函数。因此 ,该电磁轭提升力的大小不能确切反映它所能提供的Bm 和合成磁场的磁感应强度B的大小
Deriving the general relationship between the rotating magnetic field synthesized by the two intersecting magnetic fields with the phase angle α and the angle θ, and concluding that the π-shaped electromagnetic yoke providing two intersecting magnetic fields can also generate the rotating magnetic field in the workpiece. Its instantaneous magnetic field B (t) is a function of peak magnetic flux density Bm, α and θ; and the lifting force F of the yoke is a function of Bm and the yoke core cross-section S. Therefore, the magnitude of the lifting force of the yoke can not accurately reflect the magnitude of the magnetic induction B that it can provide and the magnetic field of the resultant magnetic field