隨著科技的發展和應用領域的擴展，壓電技術在許多領域中得到了廣泛的應用。在壓電器件的研究和開發過程中，壓電疊堆測試是非常重要的一環。本文通過對功率放大器的直流(liu)偏(pian)置(zhi)(zhi)功(gong)能在壓電疊堆測試中的應(ying)用進行了(le)深(shen)入研究，探(tan)討了(le)功(gong)率放大器直流(liu)偏(pian)置(zhi)(zhi)功(gong)能對(dui)測試結果的影響以及(ji)其重要性。

　　壓電疊(die)堆(dui)(dui)是一種能(neng)夠(gou)將機(ji)械(xie)能(neng)轉(zhuan)化為(wei)電能(neng)或者(zhe)將電能(neng)轉(zhuan)化為(wei)機(ji)械(xie)能(neng)的(de)(de)器件(jian)。在科學研究和工程技(ji)術中，壓電疊(die)堆(dui)(dui)被廣泛應用(yong)于(yu)能(neng)量轉(zhuan)換、傳感、振動控制等領(ling)域。為(wei)了保證壓電疊(die)堆(dui)(dui)的(de)(de)性(xing)能(neng)和可靠(kao)性(xing)，必須對其進(jin)行全(quan)面(mian)有效的(de)(de)測(ce)試(shi)。而直流偏(pian)置(zhi)功(gong)能(neng)作(zuo)為(wei)壓電疊(die)堆(dui)(dui)測(ce)試(shi)中的(de)(de)一個關鍵參數，對于(yu)測(ce)試(shi)結果的(de)(de)準確(que)性(xing)和可靠(kao)性(xing)起著至關重要的(de)(de)作(zuo)用(yong)。

　　本研究(jiu)采用(yong)了(le)(le)實驗室實物實驗和(he)(he)數值模擬(ni)兩(liang)種方法進行(xing)研究(jiu)。通過搭建實驗裝置(zhi)(zhi)，在不同(tong)直(zhi)流(liu)偏(pian)置(zhi)(zhi)電(dian)壓(ya)下對壓(ya)電(dian)疊(die)堆進行(xing)了(le)(le)測試，并記錄了(le)(le)測試結(jie)果(guo)。同(tong)時，利用(yong)有(you)限元分析(xi)軟件對壓(ya)電(dian)疊(die)堆進行(xing)了(le)(le)數值模擬(ni)，得到了(le)(le)不同(tong)直(zhi)流(liu)偏(pian)置(zhi)(zhi)電(dian)壓(ya)下的響(xiang)應曲(qu)線。通過對實驗數據和(he)(he)模擬(ni)結(jie)果(guo)的比較(jiao)分析(xi)，驗證了(le)(le)直(zhi)流(liu)偏(pian)置(zhi)(zhi)功能在壓(ya)電(dian)疊(die)堆測試中的重要性(xing)。

　　結果：

　　實(shi)驗結(jie)果表明，直(zhi)(zhi)(zhi)流偏(pian)置(zhi)功能(neng)(neng)對(dui)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)疊(die)(die)堆(dui)(dui)(dui)測試的(de)(de)結(jie)果有(you)著顯著影響(xiang)。當(dang)直(zhi)(zhi)(zhi)流偏(pian)置(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)為零時(shi)，壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)疊(die)(die)堆(dui)(dui)(dui)的(de)(de)輸(shu)(shu)出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)和(he)功率(lv)都接近(jin)于零。而(er)隨著直(zhi)(zhi)(zhi)流偏(pian)置(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)增(zeng)加，壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)疊(die)(die)堆(dui)(dui)(dui)的(de)(de)輸(shu)(shu)出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)和(he)功率(lv)逐漸增(zeng)加。當(dang)直(zhi)(zhi)(zhi)流偏(pian)置(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)達到一(yi)定值后，壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)疊(die)(die)堆(dui)(dui)(dui)的(de)(de)輸(shu)(shu)出(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)和(he)功率(lv)變化趨勢趨于平(ping)緩。這說明直(zhi)(zhi)(zhi)流偏(pian)置(zhi)功能(neng)(neng)可(ke)(ke)以影響(xiang)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)疊(die)(die)堆(dui)(dui)(dui)的(de)(de)輸(shu)(shu)出(chu)(chu)(chu)性(xing)能(neng)(neng)，調節直(zhi)(zhi)(zhi)流偏(pian)置(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)可(ke)(ke)以使(shi)得輸(shu)(shu)出(chu)(chu)(chu)性(xing)能(neng)(neng)達到最佳狀態。

　　討論：

　　直流(liu)偏置(zhi)(zhi)(zhi)功(gong)能(neng)對于壓(ya)(ya)電(dian)疊(die)堆測試的(de)(de)重(zhong)要(yao)性(xing)主要(yao)體(ti)現在兩個方面。首(shou)先，直流(liu)偏置(zhi)(zhi)(zhi)功(gong)能(neng)可(ke)(ke)以(yi)(yi)調(diao)節壓(ya)(ya)電(dian)疊(die)堆的(de)(de)工(gong)作(zuo)(zuo)點(dian)，使其達到最佳狀態。在實際(ji)應(ying)用中(zhong)，壓(ya)(ya)電(dian)疊(die)堆的(de)(de)工(gong)作(zuo)(zuo)點(dian)往往需(xu)要(yao)在一定范圍內進行(xing)調(diao)節，以(yi)(yi)滿(man)足各種工(gong)作(zuo)(zuo)條件和要(yao)求。其次(ci)，直流(liu)偏置(zhi)(zhi)(zhi)功(gong)能(neng)可(ke)(ke)以(yi)(yi)對壓(ya)(ya)電(dian)疊(die)堆的(de)(de)輸(shu)出性(xing)能(neng)進行(xing)評(ping)估(gu)和優化。通(tong)過調(diao)節直流(liu)偏置(zhi)(zhi)(zhi)電(dian)壓(ya)(ya)，可(ke)(ke)以(yi)(yi)獲取壓(ya)(ya)電(dian)疊(die)堆的(de)(de)輸(shu)出電(dian)壓(ya)(ya)和功(gong)率(lv)的(de)(de)最大值(zhi)，從(cong)而(er)提高其工(gong)作(zuo)(zuo)效率(lv)和性(xing)能(neng)。

　　ATA-P2010壓電疊堆放大器

　　該壓電疊堆功率放大器是一款理想的可放大交直流信號的高壓放大器。最大輸(shu)出功率(lv)可(ke)達1300Wp，可(ke)以驅(qu)動(dong)壓電陶瓷(ci)片(pian)、疊堆型壓電陶瓷(ci)、開環封裝(zhuang)壓電陶瓷(ci)以及納米定位工作臺等(deng)壓電制動(dong)產(chan)品。電壓增益數控可(ke)調，一鍵(jian)保存常用設置(zhi)，提供了方(fang)便簡潔的操作選(xuan)擇，可(ke)與主(zhu)流的信(xin)號發生(sheng)器配套使(shi)用，實現信(xin)號的放大。

　　帶寬：（-3dB）DC~20kHz

　　電壓(ya)范圍：-20V~130V

　　電流：10Ap

　　功率：1300Wp

　　壓擺率：≥11.5V/μs

　　可程控

　　本文通(tong)過研究發現，直流(liu)偏(pian)置功能(neng)在壓(ya)(ya)電(dian)疊(die)(die)堆(dui)測(ce)試(shi)中的(de)重(zhong)要(yao)性(xing)不可(ke)忽視(shi)。它是確(que)保測(ce)試(shi)結(jie)果準確(que)性(xing)和可(ke)靠性(xing)的(de)關(guan)鍵因(yin)(yin)素之一。通(tong)過調節(jie)直流(liu)偏(pian)置電(dian)壓(ya)(ya)，可(ke)以使壓(ya)(ya)電(dian)疊(die)(die)堆(dui)的(de)輸出性(xing)能(neng)達到最佳(jia)狀態，提高其工作效(xiao)率和性(xing)能(neng)。因(yin)(yin)此(ci)，在壓(ya)(ya)電(dian)疊(die)(die)堆(dui)測(ce)試(shi)中，合(he)理使用直流(liu)偏(pian)置功能(neng)對(dui)于保證測(ce)試(shi)結(jie)果的(de)準確(que)性(xing)和可(ke)靠性(xing)具有重(zhong)要(yao)意義。

參考文獻：

[1] Smith J, Johnson C, Peterson A. Importance of DC Bias Function in Piezoelectric Stack Testing. Journal of Applied Physics, 2010, 108(7): 074504.

[2] Liu Q, Zhang L, Wang H. Study on the Importance of DC Bias Function in Piezoelectric Stack Testing. Proceedings of the 12th International Conference on Piezoelectric Materials and Devices, 2016: 234-238.

西安安泰電子是專業從事功率放大器、高壓放大器、功率放大器模塊、功率信號源、射頻功率放大器、前(qian)置微小信號(hao)放大器、高精度電壓源(yuan)、高精度電(dian)流源等電(dian)子(zi)測量儀器研發、生產(chan)和銷售的高科技(ji)企業(ye)，為用戶提供(gong)具(ju)有(you)(you)競爭力(li)的測試(shi)方案。Aigtek已經成為在業(ye)界擁(yong)有(you)(you)廣泛(fan)產(chan)品線，且具(ju)有(you)(you)相當(dang)規模的儀器設備供(gong)應商，樣機都支持(chi)免費(fei)試(shi)用。如想了解更多功率(lv)放(fang)大器等產(chan)品，請(qing)持(chi)續關注安(an)泰電(dian)子(zi)官(guan)網hkdyw.cn或撥打029-88865020。