摘要
建立直线振动电机数学模型可进一步深入研究系统特性及控制策略。在介绍了动磁式直线振动电机的结构及运行原理基础上,利用2D有限元计算结果,对电枢电磁场及永磁体作用电磁场进行了合理简化,根据磁共能理论推导出电机线性数学模型,并采用有限元方法证明了永磁体空载磁场所具备的两个特点,即永磁体在左右侧气隙产生的磁密相等,不同位置下永磁体产生的气隙磁密相等。数学公式推导结果与实验和有限元分析结果相符。
Setting up mathematical model of the linear oscillatory motor can help further research on the system characteristics and control strategies. Based on introduction of the structure of the moving-magnet linear oscillatory motor and operational principle with the aid of calculated results of 2D Finite Element Method （FEM） model analysis the paper reasonably simplified the winding magnetic curve and the PM magnetic curve. Based on the Co-energy method derived out the mathematical model of the motor. FEM results proved two characteristics of no-load magnetic field of PM. One characteristic was that the flux densities under left and right gaps were equal, and the other was that the flux densities were equal under different PM positions. The results derived from mathematical formula were in according with the experiment and FEM results.
出处
《轻工机械》
CAS
2009年第5期65-68,共4页
Light Industry Machinery
关键词
直线振动电机
有限元法
数学模型
linear oscillatory motor
finite element method（FEM）
mathematical model
