传感器与微系统
傳感器與微繫統
전감기여미계통
TRANSDUCER AND MICROSYSTEM TECHNOLOGY
2015年
8期
13-15
,共3页
压电%原理样机%低频%环形悬臂梁
壓電%原理樣機%低頻%環形懸臂樑
압전%원리양궤%저빈%배형현비량
piezoelectric%prototype%low-frequency%annular cantilevers
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。
為瞭實現環境振動能量的低頻收集,分析瞭壓電式振動能量收集技術的特點,併建立瞭其數學模型。利用數值分析軟件對能量收集器的性能進行瞭倣真模擬,壓電式能量收集器更適用于低頻環境下的能量收集。成功製造瞭具有四根環形懸臂樑結構的大呎吋原理樣機,實驗得到瞭在外界0~500 Hz低頻掃頻下,不同加速度激勵下的開路電壓、負載電阻的電壓輸齣,併與理論分析結果對比。
위료실현배경진동능량적저빈수집,분석료압전식진동능량수집기술적특점,병건립료기수학모형。이용수치분석연건대능량수집기적성능진행료방진모의,압전식능량수집기경괄용우저빈배경하적능량수집。성공제조료구유사근배형현비량결구적대척촌원리양궤,실험득도료재외계0~500 Hz저빈소빈하,불동가속도격려하적개로전압、부재전조적전압수출,병여이론분석결과대비。
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.