CAJ | 학술논문

设计出一种三自由度等刚度永磁弹簧，并根据单组永磁体结构，采用虚位移法建立其径向磁力解析模型，利用有限元方法对径向磁力进行了仿真计算。仿真结果和模型计算结果基本吻合。解析计算与仿真结果表明，该永磁弹簧的径向磁力随着径向位移的增加而增大，随着轴向位移的增大而减小。在永磁弹簧平动平面内，两个移动方向的刚度系数和垂直于平面中心的回转刚度系数均相等。在径向位移较小时，径向位移与弹簧刚度系数近似成线性关系。
설계출일충삼자유도등강도영자탄황，병근거단조영자체결구，채용허위이법건립기경향자력해석모형，이용유한원방법대경향자력진행료방진계산。방진결과화모형계산결과기본문합。해석계산여방진결과표명，해영자탄황적경향자력수착경향위이적증가이증대，수착축향위이적증대이감소。재영자탄황평동평면내，량개이동방향적강도계수화수직우평면중심적회전강도계수균상등。재경향위이교소시，경향위이여탄황강도계수근사성선성관계。
This paper presented a 3-DOF same stiffness permanent magnetic spring.According to the structure,the mathematical model of permanent magnetic spring was set by virtual displacement method.The model of the spring’s radial magnetic force was calculated by the mathematical model and FEM software,the calculated results are basically in agreement with the simulation results.The results show that the radial magnetic force of the permanent magnet spring increases with increasing the radial displacement,decreases with increasing the axial displacement.In translational plane,the stiffness coefficients of two moving directions and the rotational direction are equal.When the radial displacement is small,the relationship between the radial displacement and spring stiffness coefficient is approximately linear.