对于谱仪、加速器及其输运系统的磁铁设计,通常要求具有较高的精确度,有时必须对三维磁场进行计算。目前大多数采用数值方法进行分析。本文叙述了电磁场数值计算在这方面的应用,对各种计算法方的优缺点、计算结果以及它和实测值的误差进行了比较和分析。针对具体实例,对各种计算方法的运用进行了探讨。 Magnet designs for spectrometers, accelerators, and their transport systems often require higher accuracy, and sometimes three-dimensional magnetic fields must be calculated. At present, the majority of numerical methods for analysis. This paper describes the application of electromagnetic field numerical calculation in this aspect, compares and analyzes the advantages and disadvantages of various calculation methods, the calculation results and the errors between it and the measured values. For specific examples, the use of various calculation methods are discussed.