直(zhi)流(liu)減速(su)(su)機和交流(liu)減速(su)(su)機是兩(liang)種應用廣泛的(de)驅動設備(bei)，兩(liang)者之間的(de)技(ji)術參數(shu)、結構特點、驅動原(yuan)理、應用場景等都(dou)不一(yi)樣，下(xia)面詳細介紹了兩(liang)種電(dian)機。

直流減速電機在機電行業是比較常見的微型減速電機,直流減速機是在普通直流電機的基礎上，加上配套齒輪減速箱。齒輪減速箱的作用是，提供較低的轉速，較大的力矩。同時，齒輪箱不同的減速比可以提供不同的轉速和力矩。這大大提高了，直流電機在自動化行業中的使用率。直流電機的結構應由定子和轉子兩大部分組成。直流電機運行時靜止不動的部分稱為定子，定子的主要作用是產生磁場，由機座、主磁極、換向極、端蓋、軸承和電刷裝置等組成。運行時轉動的部分稱為轉子，其主要作用是產生電磁轉矩和感應電動勢，是直流電機進行能量轉換的樞紐，所以通常又稱為電樞，由轉軸、電樞鐵心、電樞繞組、換向器和風扇等組成。齒輪箱分別可采用行星齒輪箱、圓柱齒輪箱等，齒輪箱由多個大小齒輪組嚙合組裝而成的直流減速機。

直(zhi)流(liu)減速(su)(su)機(ji)(ji)用途：微型(xing)直(zhi)流(liu)減速(su)(su)機(ji)(ji)廣(guang)泛(fan)應用在智(zhi)能(neng)汽車、智(zhi)能(neng)家居、智(zhi)能(neng)通(tong)訊設(she)備(bei)、電子產品、智(zhi)能(neng)醫療設(she)備(bei)、智(zhi)能(neng)機(ji)(ji)器人、辦公設(she)備(bei)、家庭影音設(she)備(bei)等(deng)；大(da)型(xing)直(zhi)流(liu)減速(su)(su)機(ji)(ji)廣(guang)泛(fan)應用冶金、礦山、起重、運輸、水泥、建筑、化工、紡織(zhi)、印染、制藥等(deng)各種通(tong)用機(ji)(ji)械(xie)設(she)備(bei)的(de)減速(su)(su)傳動機(ji)(ji)構。

交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)是(shi)一個非常(chang)廣義分類，電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)本身的(de)(de)種(zhong)類就是(shi)非常(chang)大的(de)(de)，交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)本身也可(ke)(ke)以(yi)分低速跟高(gao)速，低速的(de)(de)可(ke)(ke)以(yi)叫低速電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)、交(jiao)流(liu)(liu)(liu)(liu)低速電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)，高(gao)速的(de)(de)可(ke)(ke)以(yi)叫高(gao)速電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)，高(gao)速電(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)，交(jiao)流(liu)(liu)(liu)(liu)高(gao)速電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)，而高(gao)速電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)又(you)可(ke)(ke)以(yi)被稱為電(dian)(dian)(dian)(dian)(dian)主軸(zhou)(zhou)，高(gao)速電(dian)(dian)(dian)(dian)(dian)主軸(zhou)(zhou)等(deng)。交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)由定(ding)子(zi)和轉子(zi)組成(cheng)，交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)分為同(tong)步交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)和感(gan)應電(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)兩(liang)種(zhong)。兩(liang)種(zhong)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)均為定(ding)子(zi)側繞(rao)組通入交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)產生旋轉磁(ci)場，但(dan)同(tong)步交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)的(de)(de)轉子(zi)繞(rao)組通常(chang)需(xu)(xu)要激磁(ci)機(ji)(ji)(ji)需(xu)(xu)要供給直流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)（激磁(ci)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)）；而感(gan)應電(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)則轉子(zi)繞(rao)組則無需(xu)(xu)通入電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)。交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)工作效率(lv)較(jiao)高(gao)，又(you)沒有煙塵、氣味，不污染環境(jing)，噪聲也較(jiao)小(xiao)。由于它(ta)的(de)(de)一系列(lie)優點，所以(yi)在(zai)工農(nong)業生產、交(jiao)通運輸、國(guo)防、商業及家用(yong)電(dian)(dian)(dian)(dian)(dian)器(qi)、醫療電(dian)(dian)(dian)(dian)(dian)器(qi)設備等(deng)各(ge)方面(mian)廣泛應用(yong)。