ZHOU Ya-hui, WEN Zhi-yu, HE Xian-ming, et al. Structure optimization design and experiment of AlN piezoelectric vibration energy harvester[J]. 2018, (7): 18-21.
ZHOU Ya-hui, WEN Zhi-yu, HE Xian-ming, et al. Structure optimization design and experiment of AlN piezoelectric vibration energy harvester[J]. 2018, (7): 18-21. DOI: 10.13873/j.1000-9787(2018)07-0018-04.
AlN压电振动能量收集器的结构优化设计与实验
摘要
在整体尺寸不变的基础上
结合集总参数模型
利用ANSYS有限元软件对氮化铝(Al N)压电振动能量收集器的结构参数进行优化设计
得到压电悬臂梁单元的优化尺寸为5 mm×12 mm×0.05 mm。设计了工艺流程
加工了原理样机。经测试:在1 gn加速度
204.6 Hz谐振频率激励下
样机在最优化负载80 kΩ下的输出电压为2.3 V
输出功率为66.125μW
满足部分低功耗传感节点的供能要求。
Abstract
On the basis of remaining overall size unchanged
combining with lumped parameter model
ANSYS finite element software is used for optimization desian of structural pararneter
the optimal size of piezoelectric cantilever beam element is 5 mm × 12 mm × 0. 05 mm. Technological process is designed and the principle prototype is fabricated successfully according to the optimal size. Test result shows that with an optimized load of80 kΩ
the prototype possesses maximum output power of 66. 125 μW and output voltage of 2. 3 V at 1 gn acceleration
excited by resonant frequency of 204. 6 Hz
which meets requirement of energy supply of partial low power consumption sensing nodes.