摘要
提出了一种基于盘式永磁阵列的电磁式重力平衡装置,以实现真空下航天器的无接触自由运动。为了对该方案所产生电磁力进行计算,将盘式永磁结构等效为极距不同的直线阵列的积分。在不同区域内建立直线阵列的矢量磁位方程,通过求解该微分方程组,推导出电磁力解析表达式。对该表达式在径向积分,得到盘式阵列所产生的电磁力。利用ANSYS建立有限元模型,对该解析模型进行验证,两者平均相对误差为4.39%。
A new type of electromagnetic gravity balance device, based on the discal Halbach permanent magnet array, is presented in this paper, to achieve the non-contact free motion of spacecraft in vacuum. In order to calculate the force created by this device, the discal array can be regarded as the integral of linear array, with different pole pitches. Magnetic vector potentials differential equations, based on linear array, are built, and the expression of the electromagnet force is produced by solving this equation system. Integrating this expression, along the radial direction, the formula of the force created by the PM disk can be work out. Comparing the results of analysis and finite element method, built by ANSYS, it shows that, the relative error is 4.39%.
出处
《电工技术学报》
EI
CSCD
北大核心
2014年第5期36-42,共7页
Transactions of China Electrotechnical Society
基金
中央高校科研专项资金(2682013ZT18)
2014年西南交通大学博士研究生创新基金资助项目
关键词
电磁重力平衡
盘式阵列
HALBACH阵列
解析计算
电磁场
Electromagnetic gravity balance,discal array,Halbach array,analytic calculation,electromagnetic field
