摘要
针对目前研究的电磁式振动能量采集器都工作在较高频率的情况,文中研究了一种采集低频环境下振动的抗磁悬浮振动能量采集器。通过Ansoft Maxwell的仿真分析,得到悬浮永磁体周围磁感应强度B的变化规律,确定了感应线圈合理的分布位置,理论分析得到感应线圈匝数及导线横截面半径的最优尺寸。当热解石墨距离悬浮永磁体的位置不同时,系统对外界的频率响应不相同。仿真分析结果表明：当系统受到外界的加速度为6.25 m/s^2,频率输入为2～12 Hz,线圈产生最大感应电动势145 m V,最大输出功率为19.7μW。
Aiming at electromagnetic vibration energy harvester at present working at higher frequency, this paper presented a energy harvester？ based on diamagnetic levitation,which can absorb low-frequency vibration. By Ansoft Maxwell, the change of the magnetic induction intensity B of the floating magnet was analyzed.Then, the position, the appropriate number of turns and the radi- us of its cross section of the induction coils were obtained by the theory analysis.When the distance between the pyrolytic graphite and the floating magnet changed, the response frequency of the system varied correspondingly.The simulation results show that when the acceleration of the system is set to 6.25 m/s^2 and the input frequency is of is 2～ 12 Hz,the maximum output voltage and output power of the model are145 mV and 19.7 μW respectively.
出处
《仪表技术与传感器》
CSCD
北大核心
2015年第4期46-48,83,共4页
Instrument Technique and Sensor
基金
中国博士后科学基金资助项目(2012M521404)
河南省教育厅青年骨干教师资助项目(2012GGJS-003)
河南省教育厅自然科学基金(13A460725)
关键词
抗磁悬浮
能量采集
频率
结构优化
电压
功率
diamagnetic levitation
energy harvester
frequency
structure optimization
voltage
power
