直线往复运动磁力传动

研究利用磁场作用力传递直线往复运动的工作原理,并利用高性能稀土永磁材料构造一种实现传递直线往复运动的同轴式环形磁路结构.针对这种同轴式环形磁路结构,根据等效磁荷理论,研究磁场传递轴向作用力的计算问题,建立计算磁场传递轴向作用力的数学模型,并设计、制造一个试验台.利用这个试验台对同轴式环形磁路结构传递的轴向作用力进行测试分析,并对建立的计算磁场传递轴向作用力的数学模型进行检验.该数学模型确定磁场传递轴向作用力与磁性材料及磁路几何参数之间的关系.根据磁场传递轴向作用力的数学模型,通过数值计算,对磁环的轴向厚度,主、从动磁环的径向间隙,从动磁环的内径,主、从动磁环径向厚度比等参数对传递轴向作用力的影响进行敏度分析,结果表明减小主、从磁环间的径向间隙,可以有效地提高磁场传递轴向作用力的能力.

MAGNETIC FORCE TRANSMISSION TECHNOLOGY OF RECIPROCATE IN LINE

The principle that reciprocating in line is transmitted using the magnetic field force is studied.A magnetic circuit constructed by high performance rare-earth permanence mag-netic material is developed to transmit the reciprocating in line.For the magnetic circuit,a model of calculating the axial force transmitted by the magnetic field is established by the theory of equivalent magnetic charge,and an experimental rig for the magnetic force transmission is designed and made.The model is verified by the experiments.The model determines the rela-tion between the axial magnetic force with the magnetic ring thickness,the radial clearance,the internal magnetic ring di-ameter,and the radial wideness ratio of the tow rings.Effects of the parameters on transmitting the magnetic force are studied by the sensitivity analysis.The analysis shows that decreasing the radial clearance of the two rings increases the magnetic force transmitted by the magnetic field.