摘要：文章提出了一种新型的双层鞍形多极矩场电磁驱动结构，实现了抛体电枢的直线推进和自旋稳定。在该结构中，鞍形驱动线圈分为内外两层，内部的磁通密度增大，又由于三个对称垂直开槽的空心圆柱电枢扭转了一定角度，导致在电枢内外表面的涡流发生了很大的变化。因此，在电枢表面涡流和驱动磁场的相互作用下推动电枢同时做旋转运动和直线运动。仿真结果表明，双层驱动线圈分布结构与单层相比有更高的轴向加速力和更大的切向转矩，能量转换效率也明显提高。
关键词：直线推进，自旋稳定，垂直开槽，涡流，双层驱动线圈

Abstract: In this paper, a new type of double saddle multipole field electromagnetic drive structure was proposed, which realized linear propulsion and spin stability of parabolic armature. In this structure, the saddle drive coil was divided into inner and outer layers. The magnetic flux density increased inside the saddle drive coil, and the eddy current on the inner and outer surfaces of the armature changed greatly because the hollow cylindrical armatures with three symmetrical vertical grooves had twisted a certain angle. Therefore, under the interaction of eddy current on the armature surface and driving magnetic field, the armature was driven to rotate and move in a straight line at the same time. The simulation results show that, compared with the singlelayer structure, the doublelayer driving coil distribution structure has higher axial acceleration force, greater tangential torque, and higher energy conversion efficiency.
Key words: linear propulsion；spin stability；vertical slotting；eddy current；doublelayer driving coil