高温超导磁悬浮引纬结构悬浮稳定性分析OA

In response to the low energy utilization and limited width enhancement of existing electromagnetic let-off and take-up technologies,a method based on high-temperature superconducting(HTS)magnetic levitation for weft insertion has been proposed.Utilizing the Meissner effect of HTS,the shuttle of the weaving machine can achieve self-stabilizing levitation,and the shuttle can be driven by a traveling wave magnetic field generated by designed electromagnetic coil guides,thereby increasing the width of weft insertion of the weaving machine.Due to the mutual interference of magnetic fields between permanent magnet guides in the weft insertion structure,the magnetic field distribution generated by the guides is asymmetric.This results in unequal levitation forces on both sides of the HTS shuttle,preventing it from stable levitation above the guide.As a consequence,the subsequent weft insertion process cannot proceed.In order to ensure the stability of the shuttle levitation before weft insertion,finite element simulation software is employed to analyze the levitation forces acting on the HTS shuttle.Additionally,numerical calculations are used to solve the magnetic field of the permanent magnet guides,thereby studying the influence of magnetic field distribution on the stability of HTS shuttle levitation.Research has shown that the higher the symmetry of the magnetic field distribution above the guide,the greater the stability of the HTS shuttle levitation.Through numerical calculations,the distance between the permanent magnet guides is determined to be 30-40mm,which is the critical distance where magnetic field interference occurs between the permanent magnet guides.At this distance,the magnetic field distribution exhibits very strong symmetry,allowing the HTS shuttle to stably levitate above the permanent magnet guides.Moreover,this configuration minimizes the size of the HTS shuttle.