驅動器

電(dian)機(ji)驅動(dong)器(qi)的(de)(de)(de)傳(chuan)統方(fang)法(fa)是(shi)(shi)用分(fen)立(li)元件組裝(zhuang)它(ta)們，常見的(de)(de)(de)是(shi)(shi)基(ji)本的(de)(de)(de) H 橋。“H 橋”這個(ge)名字來自于由(you)四個(ge)開關形成(cheng)(cheng)的(de)(de)(de) H 形配置(zhi)，這些開關是(shi)(shi)其功能的(de)(de)(de)主要。基(ji)本的(de)(de)(de) H 橋電(dian)機(ji)驅動(dong)器(qi)電(dian)路(lu)通常包括四個(ge)由(you) MOSFET 或 P 溝道(dao)(dao)和(he) N 溝道(dao)(dao) BJT 制成(cheng)(cheng)的(de)(de)(de)開關。

但是，請(qing)記住，所描(miao)述的(de) H 橋組件將構(gou)成簡單驅動(dong)程序所需(xu)的(de)較低限度。由于涉及效(xiao)率(lv)、噪(zao)聲、振動(dong)、電(dian)路(lu)保護和(he)電(dian)磁(ci)干擾，電(dian)機驅動(dong)器電(dian)路(lu)變得更加復雜，直流驅動(dong)器公司(si)，工(gong)程師還必(bi)須(xu)考慮(lv)輸入和(he)輸出接口。簡而言之，工(gong)業打印機或相機對(dui)焦等應(ying)用的(de)驅動(dong)程序需(xu)要的(de)不僅僅是基本的(de) H 橋功能。

數碼相機(ji)的(de)六通道(dao)系統鏡頭驅動(dong)器框圖示例，它涉及(ji)的(de)遠不止一(yi)個簡(jian)單(dan)的(de) H 橋為各種應用(yong)設(she)計(ji)定制(zhi)驅動(dong)電路所花費(fei)的(de)時間(jian)可能很長，包括(kuo)分立元件的(de)選擇、電路設(she)計(ji)、PCB 布局和廣泛的(de)測試。如果(guo)有可用(yong)的(de)電機(ji)驅動(dong)器解決方(fang)案預(yu)先打包了(le)必要(yao)的(de)功能和記錄的(de)性能，那么(me)這種努力就會白(bai)費(fei)。

驅動器(qi)的雙電(dian)壓功率驅動方式

雙電(dian)(dian)(dian)(dian)壓(ya)(ya)驅(qu)動(dong)(dong)的(de)功(gong)率接(jie)口如圖5所示。雙電(dian)(dian)(dian)(dian)壓(ya)(ya)驅(qu)動(dong)(dong)的(de)基(ji)本思路是在(zai)(zai)較(jiao)低(di)(di)（低(di)(di)頻(pin)(pin)段(duan)）用較(jiao)低(di)(di)的(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)UL驅(qu)動(dong)(dong)，而在(zai)(zai)高(gao)(gao)(gao)速（高(gao)(gao)(gao)頻(pin)(pin)段(duan)）時(shi)(shi)用較(jiao)高(gao)(gao)(gao)的(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)UH驅(qu)動(dong)(dong)。這種功(gong)率接(jie)口需(xu)要兩個控制(zhi)信號(hao)，Uh為(wei)高(gao)(gao)(gao)壓(ya)(ya)有效控制(zhi)信號(hao)，U為(wei)脈沖(chong)調寬驅(qu)動(dong)(dong)控制(zhi)信號(hao)。圖5中，功(gong)率管TH和二極管DL構成電(dian)(dian)(dian)(dian)源轉換電(dian)(dian)(dian)(dian)路。當Uh低(di)(di)電(dian)(dian)(dian)(dian)平(ping)，TH關(guan)斷，福建直流驅(qu)動(dong)(dong)器(qi)，DL正偏(pian)(pian)置，低(di)(di)電(dian)(dian)(dian)(dian)壓(ya)(ya)UL對繞組供(gong)電(dian)(dian)(dian)(dian)。反(fan)之Uh高(gao)(gao)(gao)電(dian)(dian)(dian)(dian)平(ping)，TH導通，DL反(fan)偏(pian)(pian)，直流驅(qu)動(dong)(dong)器(qi)公(gong)司，高(gao)(gao)(gao)電(dian)(dian)(dian)(dian)壓(ya)(ya)UH對繞組供(gong)電(dian)(dian)(dian)(dian)。這種電(dian)(dian)(dian)(dian)路可(ke)使(shi)電(dian)(dian)(dian)(dian)機在(zai)(zai)高(gao)(gao)(gao)頻(pin)(pin)段(duan)也有較(jiao)大出力，而靜止鎖定時(shi)(shi)功(gong)耗(hao)減小(xiao)。

驅(qu)動器常見故障及解決辦法(fa)

步進電(dian)(dian)(dian)機驅(qu)動器(qi)電(dian)(dian)(dian)源(yuan)燈(deng)就是不亮(liang)，直流驅(qu)動器(qi)價格，這可能電(dian)(dian)(dian)源(yuan)的(de)故障(zhang)，這個時(shi)候我們需(xu)要去檢查(cha)供電(dian)(dian)(dian)的(de)電(dian)(dian)(dian)路電(dian)(dian)(dian)源(yuan)了是不是有其中的(de)一根線出(chu)現斷裂了。

OC燈可以亮，這(zhe)個(ge)是步(bu)進電(dian)機驅動(dong)器自(zi)身(shen)的保護，因為(wei)可能你的電(dian)流過大導(dao)致的，需要去(qu)看(kan)(kan)看(kan)(kan)哪里有問題線路，電(dian)源不能太低了，需要重新通電(dian)。

步(bu)進電機(ji)軸出來的力矩(ju)不夠，這種(zhong)可能(neng)就是電流小但是電機(ji)過大了導致步(bu)進電機(ji)損壞了，這種(zhong)情況需要(yao)調大電流。