步进电动机齿层磁参量数值计算的收敛性问题

Convergence Problem on the Numerical Calculation of Tooth Layer Magnetic Parameters of Step Motor

步进电动机 CAD 中,涉及到齿层磁参量的大量计算,其中最关键的是如何解决有限元法中非线性方程组求解时可能出现的不收敛问题。本文研究了采用牛顿—拉斐森法(N—R 法)时的不收敛问题及其解决的途径。

Step motor computer aided design(Step motor CAD)relates to a lot of calcul- ation of tooth layer magnetic parameters,of which the key work is to solve conver- gence problem when a group of non-linear equation in finite element method are solved.This paper studies the convergence problem of Newton—Raphaeson method (N—R method)and gives the ways to solve the problem.