Characterization of a small moving-magnet electrodynamic linear motor
Characterization of a small moving-magnet electrodynamic linear motor
复制标题
小型动磁电动直线电机的表征
DOI：
10.1121/1.2011155
复制
发表时间：
2005
影响因子：
2.4
通讯作者：
S. Garrett
中科院分区：
文献类型：
--
作者：
J. Liu;S. Garrett
通过实验确定了一种小型的、价格低廉的动磁体电动直线电机的机械和电动力学参数。采用Wakeland引入的形式，这些参数被用来预测电机的机电效率。观察到转导系数Bl是位置的函数。但从文中可以看出，随着位置的变化，Bl对驱动器输出功率的影响较小，因为在平衡位置附近，Bl最大，活塞速度也最大。通过机械共线连接两个这样的电机的电枢，创建一个电动负载（测功机），以测量效率作为能量耗散在测功机的函数。如果引入位置平均有效转导系数，则测量的效率显示与预测的很好地一致。基于这些结果，认为该直线电机在小型电机中是一种有吸引力的电源。
The mechanical and electrodynamic parameters of a small, potentially inexpensive, moving-magnet electrodynamic linear motor are determined experimentally. Employing the formalism introduced by Wakeland, these parameters are used to predict the electromechanical efficiency of the motor. The transduction coefficient, Bl, was observed to be a function of position. But as shown in the paper, the variation in Bl with position has a smaller effect on the driver’s output power because Bl is largest around the equilibrium position, where the piston velocity is also largest. By mechanical colinear joining of the armatures of two such motors, an electrodynamic load (dynamometer) is created to measure the efficiency as a function of energy dissipated in the dynamometer. The measured efficiencies are shown to be in good agreement with the predictions if a position-averaged effective transduction coefficient is introduced. Based on these results, this linear motor is judged to be an attractive power source in small el...