提高磁流变阻尼器力学性能的双线圈磁路结构

Double-coil Magnetic Structure of MR Damper Improve Mechanical Properties

针对单级线圈磁路磁流变阻尼器在给定励磁电流和磁阻时,通过增加线圈的匝数方法实现磁路中总的磁通量增加,会导致活塞整体结构增大问题,提出了提高磁流变阻尼器力学性能的双线圈磁路结构。仿真与试验结果表明:双级线圈磁路结构中通入反向等值电流时,活塞与工作缸的间隔处磁力线的密度较为集中,两线圈间隔处磁力线叠加,更好的发挥了两级线圈的作用。

For single coil magnetic circuit MR damper in a given excitation current and the reluctance to achieve by increasing the number of turns of the coil method increases the total magnetic flux in the magnetic circuit, will lead to the overall structure of the piston increases the problem, we proposed to improve double-coil magnetic structure MR damper mechanical properties. The simulation and experimental results show that： when the double coil magnetic structure in a reverse pass into the equivalent current density of the piston and the cylinder at intervals of magnetic field lines are concentrated, two-coil magnetic field lines superimposed intervals, better play the two-coil role.