壓電材料的應用在生活上越來越廣泛，為了能使能量被有效的儲存，發展出許多方法讓能量的收集更有效率，以及減少能量在運送過程的耗損，如今仍然有許多研究在為如何有效的收集能量在努力與探討電路的改良。
本文為探討一個Timoshenko懸臂樑之上下面貼有壓電片之模型，以有限元素法於分析這個壓電懸臂樑之動態行為，再利用Newmark法計算出壓電樑在受外力作用後所產生之電壓與行為。另設計一組能量擷取電路，將壓電片產生之電能有效的儲存。
壓電片受外力作用後，會產生相應之電荷，但因產生的能量以交流電型態出現，無法直接儲存或供電器使用，故本文設計一組充電電路，將產生的交流電經由增倍壓、整流、濾波、穩壓步驟後並儲存，並探討在不同的外力下，改變電容與電阻對整個電路之輸出影響。

Nowadays, the piezoelectric material is widely applied to our everyday life. Scientists invent many efficient methods of collecting energy to make energy be stored and reduce the waste of energy. Recently, there are many researches about how to improve electrical circuits of storing energy and make it more effective.
We are probing a model of charging circuit on Timoshenko beam with double-sided surface mounted piezoelectric material, and analyze its dynamic behavior by finite element method. Then we use Newmark’s method to calculate the voltage and observe the behavior caused by the external force. After that, we design another charging circuit to store the energy from piezoelectric material efficiently.
After the external force affect the piezoelectric material, there are corresponding electrons created. Due to the energy appeared in the form of alternating current, which can’t be stored directly or be applied to devices, so that a charging circuit is been designed and let the alternating current can be stored via voltage doubler, rectifier, voltage filter and voltage stabilizer. Then the effect on whole circuit by changing resistances and capacitances and with different external forces is observed and discussed.

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