According to the structure of a electro - magnetic gear couple , this research paper analyzed the main magnetic circuit as well as derived the calculation formulas for its uneven working and assembling air - gap magnetic conduction 摘要根据电磁齿轮的结构特点，分析了电磁齿轮传动的主磁路，并推导出非均匀的工作气隙磁场与装配气隙磁场磁导的计算公式。
Emcn can transfer the area in machine into several elements , each node and mesh are fixed and irrelevant to rotor rotation . only the values of permeances are related to motor rotation , but all the relations of the permeances are fixed 等效磁网络法是把电机内部化分成许多单元，各个节点和单元的划分是固定的，与电机的转动无关，与电机转子位置相关的量是各个部分的磁导值，而各个部分的相对关系不变。
The more poles mode , the unequal pole width mode ; the low - frequency slot harmonic modulation mode and the mode of changing end magnetic conductance are presented , and these designing method can efficiently weaken the end effect and decrease the wave of the thrust 提出的采用多极电机方式；初级与次级极距不等的方式；齿谐波低频调制方式和改变电机两端部磁导的方式等电机的设计原则和方法，都可有效地削弱端部效应，减小推力的波动。
2 . although calculating magnetic - flux leak coefficient and magnetic - reluctance coefficient is too complex to be done , combining magnetic force pump alnico ' s characters , appropriate accounting models are selected to calculate these coefficients through magnet conductivity methodology , the equation has been induced 虽然漏磁系数和磁阻系数的计算非常复杂，利用磁导法，结合磁力泵磁钢排布特点，选择适合磁力联轴器特点的计算模型，给出了漏磁系数的计算公式。
The emcn model is set up by use of flux - tube method . in this method , the segment in which the flux density is relatively even is considered to be an element , the permeance of each element can be calculated by use of conventional method . finally the permeance network can be set up by connecting each node with permeances , then the parameters and performance can be obtained 其基本思想是通过磁通管原理，把电机内部磁通密度相对均匀的部分看作一个单元，计算出单元的磁导，最后再把各个节点用等效磁导连接起来构成一个磁导的网络图，再根据电路的基本解法求得各个节点的磁位，从而求得电机的参数和性能。
