實(shi)驗(yan)名稱(cheng)：壓電陶瓷電場趣(qu)化電滯回線實(shi)驗(yan)

　　測試目的：

　　對壓電(dian)陶瓷的(de)(de)電(dian)場(chang)-極化產生遲(chi)滯(zhi)現象的(de)(de)實驗(yan)(yan)平(ping)臺的(de)(de)搭建(jian)(jian)進(jin)行了詳細講解(jie)，內(nei)容包括(kuo)實驗(yan)(yan)裝置(zhi)搭建(jian)(jian)、實驗(yan)(yan)原理、實驗(yan)(yan)過(guo)程。在獲(huo)取實驗(yan)(yan)數(shu)(shu)據(ju)之(zhi)后(hou)，又對所獲(huo)取的(de)(de)實驗(yan)(yan)數(shu)(shu)據(ju)進(jin)行了濾波處理，以便得到(dao)準確的(de)(de)輸入(ru)、輸出數(shu)(shu)據(ju)以應用于之(zhi)后(hou)的(de)(de)寬頻動態(tai)遲(chi)滯(zhi)模(mo)型(xing)的(de)(de)建(jian)(jian)立中。

　　測(ce)試(shi)設備：高壓(ya)放大器、任意(yi)函數發(fa)生器、數字(zi)示波器、PZT壓(ya)電陶瓷等。

　　實驗過程：

　　壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)陶(tao)瓷的(de)(de)(de)(de)極(ji)(ji)化與(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)（P-E）非線性遲滯數(shu)(shu)據是通過(guo)搭建(jian)的(de)(de)(de)(de)實驗(yan)裝(zhuang)(zhuang)置(zhi)間接獲(huo)得的(de)(de)(de)(de)，該(gai)實驗(yan)裝(zhuang)(zhuang)置(zhi)由片狀(zhuang)壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)陶(tao)瓷、任意函(han)數(shu)(shu)發(fa)(fa)(fa)生(sheng)(sheng)器(qi)、數(shu)(shu)字示波(bo)器(qi)和(he)(he)高壓(ya)放(fang)(fang)大(da)器(qi)組成，然(ran)后連接好實驗(yan)設備后，設置(zhi)函(han)數(shu)(shu)發(fa)(fa)(fa)生(sheng)(sheng)器(qi)的(de)(de)(de)(de)輸(shu)出(chu)信(xin)號為正弦信(xin)號幅值為9Vpp，由任意函(han)數(shu)(shu)發(fa)(fa)(fa)生(sheng)(sheng)器(qi)生(sheng)(sheng)成的(de)(de)(de)(de)信(xin)號輸(shu)入(ru)到(dao)高壓(ya)放(fang)(fang)大(da)器(qi)，經高壓(ya)放(fang)(fang)大(da)器(qi)放(fang)(fang)大(da)1000倍后施加(jia)于(yu)壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)陶(tao)瓷相對的(de)(de)(de)(de)兩表(biao)面(mian)上，壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)陶(tao)瓷由于(yu)受(shou)到(dao)外(wai)界(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)的(de)(de)(de)(de)作(zuo)用(yong)(yong)，其(qi)內(nei)部電(dian)(dian)(dian)(dian)(dian)(dian)(dian)疇(chou)結構在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)力作(zuo)用(yong)(yong)下發(fa)(fa)(fa)生(sheng)(sheng)變(bian)化的(de)(de)(de)(de)同時也會有新的(de)(de)(de)(de)鐵(tie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)疇(chou)疇(chou)核的(de)(de)(de)(de)生(sheng)(sheng)成，最終導致(zhi)內(nei)部電(dian)(dian)(dian)(dian)(dian)(dian)(dian)疇(chou)極(ji)(ji)化方向與(yu)外(wai)界(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)強(qiang)度方向一致(zhi)，兩表(biao)面(mian)出(chu)現等量(liang)異(yi)種電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)。在連接導線構成閉合(he)回路后，同種電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)將(jiang)發(fa)(fa)(fa)生(sheng)(sheng)定(ding)向移動從而產生(sheng)(sheng)輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流。通過(guo)調節任意函(han)數(shu)(shu)發(fa)(fa)(fa)生(sheng)(sheng)器(qi)生(sheng)(sheng)成的(de)(de)(de)(de)輸(shu)入(ru)信(xin)號的(de)(de)(de)(de)頻(pin)率大(da)小，便可獲(huo)取壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)陶(tao)瓷在不(bu)同頻(pin)率下的(de)(de)(de)(de)輸(shu)入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)和(he)(he)輸(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)(de)多組實驗(yan)數(shu)(shu)據。

　　實驗結果：

　　圖(tu)1：處理前后(hou)實驗(yan)數(shu)據的比較

　　以0.2Hz、1Hz、20Hz和150Hz為例，將濾波前(qian)后的數據進行對比，如(ru)圖1所示(shi)。在得(de)到多(duo)組不同(tong)頻率(lv)輸(shu)入信號下(xia)的輸(shu)入電壓(ya)-輸(shu)出電流實驗數據之后，首先(xian)進行濾波處理，然后進行積分運(yun)算(suan)得(de)到電荷值(zhi)的變化，從而得(de)出極化強度(du)。最后，可以繪制出不同(tong)頻率(lv)下(xia)的電滯回線圖像。

　　高壓放大器推薦：ATA-7050

　　圖：ATA-7050高壓放大器指標參數

　　本資料由Aigtek安泰電(dian)子整理(li)發(fa)布，更多案例(li)及產(chan)品詳情請(qing)持(chi)續(xu)關注(zhu)我們。西安安泰電(dian)子Aigtek已(yi)經成為在(zai)業界擁(yong)有廣泛產(chan)品線(xian)，且具有相當規模(mo)的儀器(qi)設備(bei)供應商，樣(yang)機都支持(chi)免費(fei)試用。如想了解更多功(gong)率放大器(qi)等產(chan)品，請(qing)持(chi)續(xu)關注(zhu)安泰電(dian)子官(guan)網hkdyw.cn或撥打029-88865020。