摘要
介绍了一种结合了压电式能量采集与静电式能量采集原理的复合式振动能量采集器。其结构通过有限元分析软件的优化设计,得到了期望的低频共振频率。为了预测这个复合式振动能量采集器的性能,建立了解析模型,在此基础上使用MATLAB/SI MULINK进行了数值模拟。模拟结果显示,在某些特定的频率范围内,这种复合式振动能量采集器能够提供比其他两种能量采集器更高的输出功率。对于固有频率为282 Hz的器件结构,仿真发现复合式设计的输出功率可达4.85μW,两倍于电容式设计的输出功率2.11μW。
A hybrid vibration-powered microgenerator has been presented by combining the structures of piezoelectric generator and electrostatic generator, and the structure of the microgenerator is optimized by a Finite Element Method（FEM） to obtain the desired low resonant frequency. Then,an analytic model is established to predict the behavior of the hybrid power-generator and a MATLAB/SIM- ULINK is utilized for the numerical simulation. The simulated results reveal that the hybrid powergenerator has a higher output power than those of two energy harvesting mechanisms at a special resonant frequency. For a resonant frequency of 282 Hz, the simulation result shows the output power from the hybrid mechanism is 4.85 μm, which doubles 2.11 μW from the original capacitive mechanism.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2009年第6期1262-1266,共5页
Optics and Precision Engineering
基金
Supported by the National Natural Science Foundation of China (Grant No .50575191)
the Scienceand Technology Programof Xiamen (Grant No .3502Z20063006)
