基于微分求积法的音圈电机性能的数值分析

Numerical Analysis of Voice Coil Motor Based on Differential Quadrature Method

建立了音圈电机磁场微分方程,并采用微分求积法对磁场微分方程进行求解。根据音圈电机的结构,将磁场划分出不同的子计算域,利用麦克斯韦方程建立磁场控制方程,采用边界条件将子域组装成全局微分方程,求解得到音圈电机气隙中磁感应强度与音圈电机结构的关系。使用有限元软件Ansoft对音圈电机进行仿真,得到磁感应强度的分布,并与上述微分求积法求解的结果进行对比,两者吻合良好。结果表明,微分求积法能够高效准确地对音圈电机的磁场分布进行求解,对音圈电机的设计具有辅助作用。

This paper presents a meshless collocation method based on differential quadrature method for solving the magnetic field of voice coil motor. The voice coil motor model is divided into different sub- computing domains and they are connected by boundary conditions. The solution matrix is established to calculate the permanent magnet field and the armature reaction matrix. By solving the two matrices, the relationship between the magnetic induction intensity and the structure of the voice coil motor in the air gap of the voice coil motor is obtained. In order to verify the results Ansoft to calculate the magnetic field. The results show that magnetic field of the voice coil motor is effective and can be of differential quadrature method, this paper uses the differential quadrature method for solving the helpful for the design of voice coil motor.