用有限元法分析计算交流接触器磁系统的动态特性

Calculation and analysis of dynamic characteristics of magnetic system of AC contactor with finite element method

采用多元函数插值的算法，把磁场数值计算和交流磁系统动态微分方程组联系起来，不仅充分考虑了磁系统的非线性，并且在一次用非线性有限元方法建立ψ（ｘ，ｉ）和ｆ（ｘ，ｉ）数据网格后，就可计算出磁系统的动态特性。文章还对计算结果进行了试验验证。

With algorithm of many variables function interpolation,and by relating the numerical value calculation of magnetic field with dynamic differential equations of AC magnetic system,the paper not only considers non linear of magnetic system fully,but also calculates the dynamic characteristics of magnetic system after the data grids of ψ(x,i ) and f(x,i ) are set up with non linear finite element method once. Calculation results are verified by tests.