Based on three dimensional finite element analyses of magnetic fields, the cogging torque of a prototype motor is calculated using the virtual work and Maxwell stress tensor methods.

在电机内磁场三维有限元数值分析的基础上，采用虚位移和麦克斯韦张量两种不同的方法计算了电机的脉动转矩。

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A new nonlinear structure tensor calculation method is presented. We extend the trace-based PDE regularization method to matrix-valued data fields.

提出一种新的非线性结构张量计算方法，扩展了基于迹的PDE正则化方法，使其适用于矩阵值数据场；

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A new nonlinear structure tensor calculation method is presented. We extend the trace-based PDE regularization method to matrix-valued data fields.

提出一种新的非线性结构张量计算方法，扩展了基于迹的PDE正则化方法，使其适用于矩阵值数据场；

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