本文選題：低頻振動(dòng)　切入點(diǎn)：壓電能量采集器　出處：《光學(xué)精密工程》2014年09期 　論文類型：期刊論文

【摘要】：設(shè)計(jì)了基于微機(jī)電系統(tǒng)(MEMS)的一階、二階傳動(dòng)低頻壓電振動(dòng)能量采集器,通過壓電效應(yīng)將低頻振動(dòng)能量轉(zhuǎn)化為電能來解決低頻(小于200Hz)振動(dòng)環(huán)境中的能量采集問題。一階傳動(dòng)能量采集器模型包括一階傳動(dòng)梁及壓電懸臂梁,二階傳動(dòng)能量采集器模型包括一階傳動(dòng)梁、二階傳動(dòng)梁及壓電懸臂梁。數(shù)學(xué)建模及有限元分析顯示:采集器工作頻率隨一階、二階傳動(dòng)梁及壓電懸臂梁材料的楊氏模量的減小均呈單調(diào)遞減的趨勢(shì);傳動(dòng)梁的設(shè)計(jì)可有效降低采集器的高階工作頻率、拓寬工作帶寬;而二階傳動(dòng)梁可以在1g加速度條件下,獲得10.98Hz和44.52Hz兩個(gè)超低頻率的電壓峰值(分別為3.18V/g和1.33V/g),使系統(tǒng)工作頻率降得更低,50Hz以下的有效工作帶寬更寬,更適合與低頻振動(dòng)環(huán)境匹配進(jìn)行能量采集。
[Abstract]:The first and second order drive low frequency piezoelectric vibration energy collector based on MEMS is designed. The problem of energy acquisition in low frequency (less than 200Hz) vibration environment is solved by converting low frequency vibration energy into electric energy by piezoelectric effect. The first order transmission energy collector model includes first order transmission beam and piezoelectric cantilever beam. The second order transmission energy collector model includes the first order transmission beam, the second order transmission beam and the piezoelectric cantilever beam. The mathematical model and finite element analysis show that the frequency of the collector works with the first order. The Young's modulus of the second order transmission beam and the piezoelectric cantilever beam decrease monotonously, the design of the transmission beam can effectively reduce the high order working frequency of the collector and widen the working bandwidth, while the second order transmission beam can work under the condition of 1 g acceleration. Two ultra-low frequency voltage peaks of 10.98 Hz and 44.52 Hz (3.18 V / g and 1.33 V / g / g) are obtained respectively, which makes the effective operating bandwidth lower than 50 Hz and more suitable for energy acquisition matching with low-frequency vibration environment.
【作者單位】： 太原理工大學(xué)信息工程學(xué)院微納系統(tǒng)研究中心;太原理工大學(xué)新型傳感器與智能控制教育部和山西省重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(No.51205276,51205275) 中國(guó)博士后科學(xué)基金資助項(xiàng)目(No.20110491629,2013T60268) 山西省研究生優(yōu)秀創(chuàng)新項(xiàng)目(No.20133032) 山西省青年科學(xué)基金資助項(xiàng)目(No.2012021021-5,2013021017-1) 山西省歸國(guó)留學(xué)人員基金資助項(xiàng)目(No.2013-036) 太原理工大學(xué)大學(xué)生創(chuàng)新項(xiàng)目
【分類號(hào)】：TM619

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