步進電機是一(yi)種感應(ying)電(dian)(dian)(dian)機(ji)(ji),它(ta)的(de)(de)工作原理是利用(yong)電(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)路,將直流(liu)電(dian)(dian)(dian)變(bian)成(cheng)分時(shi)供(gong)電(dian)(dian)(dian)的(de)(de)多相時(shi)序控(kong)(kong)制電(dian)(dian)(dian)流(liu),用(yong)這種電(dian)(dian)(dian)流(liu)為步進電(dian)(dian)(dian)機(ji)(ji)供(gong)電(dian)(dian)(dian),步進電(dian)(dian)(dian)機(ji)(ji)才(cai)能正常工作,驅動器就(jiu)是為步進電(dian)(dian)(dian)機(ji)(ji)分時(shi)供(gong)電(dian)(dian)(dian)的(de)(de),多相時(shi)序控(kong)(kong)制器。雖(sui)然步進電(dian)(dian)(dian)機(ji)(ji)已被廣泛地(di)應(ying)用(yong),但步進電(dian)(dian)(dian)機(ji)(ji)并不能像普(pu)通的(de)(de)直流(liu)電(dian)(dian)(dian)機(ji)(ji)。交流(liu)電(dian)(dian)(dian)機(ji)(ji)在(zai)常規下使(shi)(shi)用(yong),它(ta)必須由雙環形脈沖信號、功率驅動電(dian)(dian)(dian)路等組成(cheng)控(kong)(kong)制系統(tong)方可(ke)使(shi)(shi)用(yong)。因此用(yong)好步進電(dian)(dian)(dian)機(ji)(ji)卻非易(yi)事,它(ta)涉及到機(ji)(ji)械、電(dian)(dian)(dian)機(ji)(ji)、電(dian)(dian)(dian)子(zi)及計算機(ji)(ji)等許多專業知(zhi)識(shi)。
步進(jin)電機(ji)(ji)作為執行元件(jian),是機(ji)(ji)電一體化(hua)的關(guan)鍵產品(pin)之一,廣泛應(ying)用在各(ge)種自(zi)動化(hua)控制(zhi)系統中(zhong)。隨著微(wei)電子和計算(suan)機(ji)(ji)技(ji)術的發展,步進(jin)電機(ji)(ji)的需(xu)求量(liang)與日俱增,在各(ge)個國民經濟領域都有應(ying)用。
步(bu)進電(dian)(dian)機(ji)(ji)是一種將電(dian)(dian)脈沖(chong)轉化(hua)為角(jiao)位移(yi)的(de)(de)執(zhi)行機(ji)(ji)構。通俗一點講:當步(bu)進驅動(dong)器(qi)接收到一個(ge)脈沖(chong)信號,它就驅動(dong)步(bu)進電(dian)(dian)機(ji)(ji)按設定(ding)的(de)(de)方向轉動(dong)一個(ge)固定(ding)的(de)(de)角(jiao)度(即步(bu)進角(jiao))。可(ke)以通過控制(zhi)脈沖(chong)個(ge)數來(lai)(lai)控制(zhi)角(jiao)位移(yi)量,從而達到準確定(ding)位的(de)(de)目(mu)的(de)(de);同時可(ke)以通過控制(zhi)脈沖(chong)頻率來(lai)(lai)控制(zhi)電(dian)(dian)機(ji)(ji)轉動(dong)的(de)(de)速(su)度和(he)加速(su)度,從而達到調速(su)的(de)(de)目(mu)的(de)(de)。
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