摘要： 调焦用微型音圈电机性能对电机零件的尺寸精度敏感。通过有限元分析对音圈电机进行了磁场的仿真，修改磁场的尺寸参数，得到不同条件下磁场的力系数，并对不同条件下的力系数进行评价，确定了提高力系数均匀程度的方法，同时提高了电机的线性度。

关键词：音圈电机；磁场仿真；力系数
Abstract: Micro voice motor for autofocusing is sensitive to its dimensional accuracy Magnetic field was simulated by finite element analysis, and by modifying the size, different force coefficient were obtained and evaluated on its uniformity Ways of improving force coefficient uniformity were proposed, and the linearity of the motor gets better at the same time

Key words: voice coil motor; magnetic simulation; force coefficient