论文部分内容阅读
为了寻求永磁悬浮导轨磁力的简便算法,基于由磁荷法和虚位移法给出的永磁磁力数值积分公式,结合两块平行矩形截面永磁体及永磁导轨结构特点,推导出永磁悬浮导轨解析磁力模型;根据介质分界面为平面的电流镜像法,得到了永磁体在铁磁体中的镜像,分析了永磁导轨的悬浮磁力和导向磁力。模型分析表明:两块截面平行永磁体的磁力分别与永磁体剩磁的平方和永磁体的纵向长度成正比,磁力随永磁体的横截面增大而增大,随永磁体的间距增大而减小;永磁导轨悬浮磁力随永磁导轨倾斜度增大而减小,导向磁力随永磁导轨倾斜度增大而增大。该模型通过代数运算就可得到精度较高的磁力计算结果。经验证,模型计算值和实验值吻合。
In order to seek a simple and convenient algorithm of magnetism of permanent magnet suspension levitation rail, based on numerical formula of permanent magnet magnetic force given by magnetic charge method and imaginary displacement method, combined with the structural characteristics of two parallel rectangular section permanent magnets and permanent magnet guide rail, According to the current mirror method with flat interface, the mirror image of permanent magnet in ferromagnet was obtained, and the levitation magnetic force and guiding magnetic force of permanent magnet guide rail were analyzed. The model analysis shows that the magnetic forces of two parallel permanent magnets are respectively proportional to the square of permanent magnets and the longitudinal length of permanent magnets. The magnetic force increases with the increase of the cross section of permanent magnets. With the increase of the distance between permanent magnets Decrease; the magnetic force of suspension of permanent magnet guide decreases with the increase of the inclination of permanent magnet guide, and the guidance magnetic force increases with the increase of inclination of permanent magnet guide. The model can obtain the result of magnetic force calculation with high accuracy through algebraic operation. The calculated values agree well with the experimental values.