摘要
为了实现环境振动能量的低频收集,分析了压电式振动能量收集技术的特点,并建立了其数学模型。利用数值分析软件对能量收集器的性能进行了仿真模拟,压电式能量收集器更适用于低频环境下的能量收集。成功制造了具有四根环形悬臂梁结构的大尺寸原理样机,实验得到了在外界0~500 Hz低频扫频下,不同加速度激励下的开路电压、负载电阻的电压输出,并与理论分析结果对比。
In order to harvest low-frequency vibration energy of environment,analyze characterstics of piezoelectric vibration energy harvesting technology,and set up math model. Simulation on property of energy harvester is carried out by numerical analysis software,prototype with four annular cantilevers is made. Theoretical and experimental models are presented. Based on state space equations,numerical analysis are performed. Open-circuit voltage and voltage output load resistance at different accelerations of low-frequency 0 ~500 Hz vibration sources are obtained by experiment and the experimental result is compared to theoretical result.
出处
《传感器与微系统》
CSCD
2015年第8期13-15,共3页
Transducer and Microsystem Technologies
基金
国家自然科学基金资助项目(51075344
61274120)
关键词
压电
原理样机
低频
环形悬臂梁
piezoelectric
prototype
low-frequency
annular cantilevers
