摘要
针对微机电系统供电问题,提出一种新型的抗磁悬浮振动能量采集器结构。该结构消除了传统机械悬浮的能量损失,利用提升永磁体与悬浮永磁体之间的磁吸力抵消悬浮永磁体的重力,两个热解石墨薄板与悬浮永磁体之间的抗磁力作为回复力使悬浮永磁体回到平衡位置。通过有限元软件MAXWELL仿真计算,悬浮永磁体的最大活动范围1.3mm;同时,分析了在悬浮永磁体悬浮的范围内磁力的增量与抗磁力增量大小对比,得出了抗磁能量采集器的运动特性和稳定工作的范围为0.7mm。
Based on supplying energy for MEMS, a novel micro-vibration energy harvester structure has been presented. Dissipation of energy through mechanical contact is eliminated, the gravity of the floating magnet can be balanced by the attractive force between the lifting magnet and the floating magnet, and the diamagnetic force exerted on the floating magnet by the two pyrolytic graphite sheets works as restoring force, which makes the floating permanent magnet return to the equilibrium position. By MAXWELL simulation,the maximum range of mavement is 1.3ram for the floating permanent magnet. Comparative analysis of the magnetic force increment and the anti-magnetic forceincrement has been carried out, the motion characteristics of the structure are obtained, and the stability range is 0.7mm.
出处
《机械设计与制造》
北大核心
2014年第6期84-86,90,共4页
Machinery Design & Manufacture
基金
中国博士后科学基金资助项目(2012M521404)
河南省教育厅自然科学基金(13A460725)
河南省教育厅青年骨干教师资助项目(2012GGJS-003)
