【摘要】 提出一种新型等效源法，该法中等效源的位置和个数可给以确定，由它产生的场分布可用级数表示，该方法克服了以前等效源的位置和个数只能凭经验决定的缺点，而成为一种科学的计算方法。用新型等效源法计算了含有铁心的轴对称磁场，结果表明，本方法比单独用模拟磁荷法，既减少了等效源的个数，又提高了计算精度更多还原

【Abstract】 This paper proposes a new-style equivalent source method(NESM),in which the number and position of all the ES can be determined and the field distribution in all subregions expressed as series form. In order to determine the coefficients of series terms, least square method is adopted. The field distribution in axisymmetrical field with iron core has been calculated by the method. The calculating results show that the approach gives higher precision and uses less equivalent sources than simulation magnetic charge method alone.更多还原