臺灣博碩士論文加值系統

為了研制壓電材料或者判斷某一壓電材料是否具有實用價值，我們就必須知道它的壓電常數。當我們知道了它的壓電常數以後，就可以預測壓電晶體任意方位晶片的行為和物理性質，進而為壓電器件的研制提供了依據，可以幫助我們選擇合適的壓電材料和切型。因此，在本論文就量測壓電電荷常數 而言，提出簡單及可行的方法。針對此一方法提出等效電路之近似，並實作。量測後之結果並和供為業界標準用之 計量器做比較。在頻率工作範圍10Hz~2KHZ，希望能實現精確度在 之間的壓電電荷常數 之量測電路。

In order to study piezoelectric materials or decide some piezoelectric materials have practical worth or not, we must know its piezoelectric coefficient d33. As we know its piezoelectric coefficient d33 we can predict the behavior and the physical properties then provide the standard for the study of piezoelectric appliance to help us to choice the suitable piezoelectric materials and shapes. So the thesis provides the simple and practicable method for the measurement of the piezoelectric coefficient d33. In accordance with the method, we bring up the approach of the actual circuit and realize. We compare the result of the measurement to d33 meter of the industrial environment. We hope to realize the precision of the circuit of the piezoelectric coefficient d33 among in the 10 Hz ~2 kHz.

中文摘要 ………………………………………………………… i
英文摘要…………………………………………………………………ii誌謝 …………………………………………………………………… iii目 錄 …………………………………………………………………iv表目錄………………………………………………………………… vi圖目錄………………………………………………………………… Viii
第一章 緒 論 ……………………………………………………… 1
1.1 前 言 …………………………………………………… 1
1.2 壓電材料的應用領域…………………………………… 2
1.3 文獻回顧與研究動機 …………………………………… 3
第二章 原理………………………………………………………… 5
2.1 壓電效應 ………………………………………………… 6
2.2壓電方程式 ……………………………………………… 8
2.3壓電晶體的壓電常數……………………………………… 15
2.4壓電諧振器(Resonator)的等效電路…………………… 18
2.4.1非諧振頻率處壓電諧振器的等效電路 …………… 18
2.4.2諧振頻率處壓電諧振器的等效電路……………… 21
2.5 薄圓片諧振器之等效電路推導……………………………… 23
2.6 揚聲器之等效電路推導……………………………………… 32
第三章 電路設計與模擬…………………………………………… 36
3.1 交流應力產生器…………………………………………… 37
3.2 薄圓片諧振器…………………………………………… 38
3.3 電荷放大電路……………………………………………… 42
3.3.1 有限增益對電荷放大電路之影響………………… 44
3.3.2 電荷放大器特性之模擬結果……………………… 48
3.4 電壓放大電路……………………………………………… 51
3.5 壓電電荷常數 量測電路之模擬與討論………………… 53
第四章 實驗與量測結果之討論……………………………………… 66
4.1 實驗設置……………………………………………………… 66
4.2 量測結果與討論……………………………………………… 72
第五章 結論與未來展望……………………………………………… 84
參考文獻……………………………………………………………… 86
簡歷…………………………………………………………………… 90

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