直線電機是一種不需要任何轉換裝置就能將電能立即轉化為直線機械能的新型電機。它具有系統結構簡單、磨損少、噪音低、組合力強、維護方便等優點。旋轉電機的品種，直線電機幾乎都有相應的品種，它的應用范圍也在不斷擴大，并在一些地方它能發揮獨特的作用取得了令人滿意的效果。

 直線驅(qu)動(dong)(dong)(dong)電(dian)(dian)機是(shi)一種可(ke)以通(tong)(tong)過電(dian)(dian)源立即驅(qu)動(dong)(dong)(dong)的電(dian)(dian)機。這是(shi)一個普通(tong)(tong)電(dian)(dian)機，沒(mei)有可(ke)控(kong)(kong)性，只(zhi)提供一個方向(xiang)的不(bu)穩定功率。伺服電(dian)(dian)機是(shi)由驅(qu)動(dong)(dong)(dong)器驅(qu)動(dong)(dong)(dong)的可(ke)控(kong)(kong)電(dian)(dian)機。它(ta)有轉(zhuan)速可(ke)控(kong)(kong)、轉(zhuan)矩可(ke)控(kong)(kong)和(he)位置(zhi)可(ke)控(kong)(kong)三(san)種模式。工業(ye)自(zi)動(dong)(dong)(dong)化基本靠(kao)它(ta)來實現。

 這(zhe)兩者不(bu)是一(yi)個(ge)概念。伺(si)服電(dian)(dian)(dian)機(ji)指電(dian)(dian)(dian)機(ji)由伺(si)服驅(qu)(qu)動(dong)(dong)器發(fa)(fa)出的(de)(de)(de)(de)高頻脈沖(chong)驅(qu)(qu)動(dong)(dong)，可(ke)(ke)支持固(gu)定(ding)角度、速(su)度和(he)轉(zhuan)矩的(de)(de)(de)(de)輸出。他說的(de)(de)(de)(de)是發(fa)(fa)動(dong)(dong)機(ji)的(de)(de)(de)(de)類型。直(zhi)驅(qu)(qu)電(dian)(dian)(dian)機(ji)就是指電(dian)(dian)(dian)機(ji)與負載立即(ji)剛性連接，無任何傳(chuan)(chuan)(chuan)動(dong)(dong)機(ji)構和(he)聯軸(zhou)器。他說的(de)(de)(de)(de)是馬(ma)達(da)的(de)(de)(de)(de)工作原(yuan)理。伺(si)服電(dian)(dian)(dian)機(ji)可(ke)(ke)直(zhi)接連接負載或(huo)通過傳(chuan)(chuan)(chuan)動(dong)(dong)裝(zhuang)置負載;立即(ji)驅(qu)(qu)動(dong)(dong)電(dian)(dian)(dian)機(ji)可(ke)(ke)以是伺(si)服電(dian)(dian)(dian)機(ji)或(huo)其他電(dian)(dian)(dian)機(ji)。伺(si)服電(dian)(dian)(dian)機(ji)而(er)是將電(dian)(dian)(dian)能轉(zhuan)化為機(ji)械(xie)(xie)能，但(dan)它的(de)(de)(de)(de)下部(bu)還需(xu)要(yao)(yao)與各種板式傳(chuan)(chuan)(chuan)動(dong)(dong)裝(zhuang)置(如皮帶、絲杠、滾子等)連接，以達(da)到您的(de)(de)(de)(de)傳(chuan)(chuan)(chuan)動(dong)(dong)要(yao)(yao)求;立即(ji)驅(qu)(qu)動(dong)(dong)電(dian)(dian)(dian)機(ji)不(bu)需(xu)要(yao)(yao)其他傳(chuan)(chuan)(chuan)動(dong)(dong)裝(zhuang)置。直(zhi)連設備(bei)，如洗衣機(ji)的(de)(de)(de)(de)滾筒，直(zhi)接與電(dian)(dian)(dian)機(ji)連接，減少了機(ji)械(xie)(xie)傳(chuan)(chuan)(chuan)動(dong)(dong)部(bu)分的(de)(de)(de)(de)連接部(bu)件。