Magnetic force determining method for two permanent magnets with rectangular and right-angled triangular cross sections

The invention discloses a magnetic force determining method for two permanent magnets with the rectangular and right-angled triangular cross sections. A magnetic force analysis model applicable to four kinds of permanent magnets with the rectangular and right-angled triangular cross sections in different arrangement modes is built, and X-direction magnetic forces Fx of the two permanent magnets corresponding to the four kinds of structures are respectively obtained. The method provided by the invention solves the problems that only complicated numerical simulation algorithms can be used for the magnetic force calculation of the two permanent magnets with the rectangular and right-angled triangular cross sections, but no method convenient for engineering design calculation can be used for fast magnetic force determination; the method provided by the invention solves the problems that the work load of the existing permanent magnetic guide rail magnetic force calculation is too great, and the design and the optimization on permanent magnetic guide rails are inconvenient.