步進電機是一(yi)種感應電(dian)(dian)(dian)(dian)機(ji)(ji)(ji),它的(de)(de)工作原理是利用(yong)(yong)電(dian)(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)(dian)路,將直流(liu)電(dian)(dian)(dian)(dian)變成分(fen)時(shi)(shi)供(gong)電(dian)(dian)(dian)(dian)的(de)(de)多(duo)相時(shi)(shi)序控(kong)制(zhi)電(dian)(dian)(dian)(dian)流(liu),用(yong)(yong)這(zhe)種電(dian)(dian)(dian)(dian)流(liu)為(wei)步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)供(gong)電(dian)(dian)(dian)(dian),步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)才能(neng)正常工作,驅(qu)動器(qi)(qi)就是為(wei)步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)分(fen)時(shi)(shi)供(gong)電(dian)(dian)(dian)(dian)的(de)(de),多(duo)相時(shi)(shi)序控(kong)制(zhi)器(qi)(qi)。雖(sui)然步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)已被廣泛(fan)地應用(yong)(yong),但步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)并不能(neng)像普(pu)通的(de)(de)直流(liu)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)。交流(liu)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)在常規下使用(yong)(yong),它必須(xu)由雙環(huan)形脈沖信號、功率驅(qu)動電(dian)(dian)(dian)(dian)路等組成控(kong)制(zhi)系統方(fang)可使用(yong)(yong)。因此(ci)用(yong)(yong)好(hao)步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)卻非(fei)易事,它涉及到(dao)機(ji)(ji)(ji)械、電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)、電(dian)(dian)(dian)(dian)子(zi)及計算(suan)機(ji)(ji)(ji)等許多(duo)專業知識。
步(bu)進電(dian)機(ji)(ji)作(zuo)為執行(xing)元件,是機(ji)(ji)電(dian)一體化(hua)的關鍵產(chan)品之一,廣(guang)泛應用在各種自動(dong)化(hua)控制(zhi)系統(tong)中。隨(sui)著微電(dian)子和(he)計算機(ji)(ji)技(ji)術的發展,步(bu)進電(dian)機(ji)(ji)的需(xu)求(qiu)量(liang)與日俱增,在各個國民經(jing)濟領域都有應用。
步(bu)進(jin)電機(ji)是一(yi)(yi)(yi)種(zhong)將電脈(mo)(mo)沖轉(zhuan)(zhuan)化為角位(wei)移的(de)執行機(ji)構。通(tong)俗一(yi)(yi)(yi)點講:當步(bu)進(jin)驅動器接收到(dao)一(yi)(yi)(yi)個(ge)(ge)脈(mo)(mo)沖信號(hao),它就驅動步(bu)進(jin)電機(ji)按設定(ding)的(de)方向(xiang)轉(zhuan)(zhuan)動一(yi)(yi)(yi)個(ge)(ge)固定(ding)的(de)角度(即步(bu)進(jin)角)。可(ke)以通(tong)過(guo)控制(zhi)(zhi)脈(mo)(mo)沖個(ge)(ge)數(shu)來(lai)控制(zhi)(zhi)角位(wei)移量(liang),從而(er)達到(dao)準確定(ding)位(wei)的(de)目(mu)的(de);同(tong)時可(ke)以通(tong)過(guo)控制(zhi)(zhi)脈(mo)(mo)沖頻率來(lai)控制(zhi)(zhi)電機(ji)轉(zhuan)(zhuan)動的(de)速(su)度和加(jia)速(su)度,從而(er)達到(dao)調速(su)的(de)目(mu)的(de)。
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