步進電機和無刷電機是兩種應用非常廣泛的驅動電機，兩者的結構、領域、驅動特性上明顯不一樣，下面詳細介紹步進電機和無刷電機的區別，將從驅動原理、特點、應用場景介紹。

步(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)(dian)機又稱(cheng)(cheng)為脈沖(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)機，基(ji)于最基(ji)本的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵原(yuan)理，它(ta)是(shi)一(yi)種可(ke)以自(zi)由回轉(zhuan)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)鐵，其動作原(yuan)理是(shi)依靠氣隙(xi)磁(ci)(ci)(ci)導的(de)(de)(de)變化來產生電(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)轉(zhuan)矩。步(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)(dian)機是(shi)一(yi)種將電(dian)(dian)(dian)(dian)(dian)脈沖(chong)(chong)(chong)信號轉(zhuan)換成(cheng)相應(ying)角位(wei)移或(huo)線位(wei)移的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)動機。每(mei)輸(shu)入一(yi)個(ge)脈沖(chong)(chong)(chong)信號，轉(zhuan)子(zi)(zi)(zi)就轉(zhuan)動一(yi)個(ge)角度或(huo)前進(jin)一(yi)步(bu)(bu)，其輸(shu)出的(de)(de)(de)角位(wei)移或(huo)線位(wei)移與(yu)(yu)輸(shu)入的(de)(de)(de)脈沖(chong)(chong)(chong)數(shu)成(cheng)正比，轉(zhuan)速與(yu)(yu)脈沖(chong)(chong)(chong)頻率(lv)成(cheng)正比。因此，步(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)(dian)動機又稱(cheng)(cheng)脈沖(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)動機。通常電(dian)(dian)(dian)(dian)(dian)機的(de)(de)(de)轉(zhuan)子(zi)(zi)(zi)為永磁(ci)(ci)(ci)體(ti)，當電(dian)(dian)(dian)(dian)(dian)流流過(guo)定子(zi)(zi)(zi)繞組(zu)時，定子(zi)(zi)(zi)繞組(zu)產生一(yi)矢(shi)量(liang)磁(ci)(ci)(ci)場。該(gai)(gai)磁(ci)(ci)(ci)場會帶動轉(zhuan)子(zi)(zi)(zi)旋(xuan)(xuan)轉(zhuan)一(yi)角度，使得轉(zhuan)子(zi)(zi)(zi)的(de)(de)(de)一(yi)對磁(ci)(ci)(ci)場方向與(yu)(yu)定子(zi)(zi)(zi)的(de)(de)(de)磁(ci)(ci)(ci)場方向一(yi)致。當定子(zi)(zi)(zi)的(de)(de)(de)矢(shi)量(liang)磁(ci)(ci)(ci)場旋(xuan)(xuan)轉(zhuan)一(yi)個(ge)角度。轉(zhuan)子(zi)(zi)(zi)也隨著該(gai)(gai)磁(ci)(ci)(ci)場轉(zhuan)一(yi)個(ge)角度。步(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)(dian)機具備(bei)運(yun)行平(ping)穩、低噪音、響應(ying)快、使用(yong)壽命長、高輸(shu)出扭矩等特(te)點。

步進電機(ji)(ji)在智能機(ji)(ji)器人驅動、升(sheng)降桌升(sheng)降、電動沙(sha)發伸縮、ATM機(ji)(ji)、噴繪機(ji)(ji)、刻字機(ji)(ji)、寫真機(ji)(ji)、噴涂設備、醫療儀器及設備、工業自(zi)動化設備、小型(xing)電動工具、精(jing)密儀器、工業控制系統、辦公(gong)自(zi)動化、機(ji)(ji)器人等領域。

無刷直流電機是采用半導體開關器件來實現電子換向的，即用電子開關器件代替傳統的接觸式換向器和電刷。它具有可靠性高、無換向火花、機械噪聲低等優點，廣泛應用于高檔錄音座、錄像機、電子儀器及自動化辦公設備中。

無刷直(zhi)流(liu)電(dian)動機由永磁(ci)體轉(zhuan)(zhuan)子、多極繞組(zu)(zu)定(ding)子、位置(zhi)(zhi)傳(chuan)(chuan)感(gan)器等組(zu)(zu)成。位置(zhi)(zhi)傳(chuan)(chuan)感(gan)按轉(zhuan)(zhuan)子位置(zhi)(zhi)的(de)(de)變(bian)化，沿(yan)著一定(ding)次序對定(ding)子繞組(zu)(zu)的(de)(de)電(dian)流(liu)進行(xing)換流(liu)（即檢測轉(zhuan)(zhuan)子磁(ci)極相(xiang)對定(ding)子繞組(zu)(zu)的(de)(de)位置(zhi)(zhi)，并在確定(ding)的(de)(de)位置(zhi)(zhi)處產生位置(zhi)(zhi)傳(chuan)(chuan)感(gan)信號(hao)，經信號(hao)轉(zhuan)(zhuan)換電(dian)路處理(li)后去控(kong)制功率開關(guan)電(dian)路，按一定(ding)的(de)(de)邏輯關(guan)系進行(xing)繞組(zu)(zu)電(dian)流(liu)切換）。定(ding)子繞組(zu)(zu)的(de)(de)工(gong)作電(dian)壓由位置(zhi)(zhi)傳(chuan)(chuan)感(gan)器輸出控(kong)制的(de)(de)電(dian)子開關(guan)電(dian)路提(ti)供。

無刷電機優點：無電刷、低(di)干擾、噪音低(di)，運轉順暢、壽命長，低(di)維護成本等

無刷(shua)電(dian)機用(yong)(yong)途(tu)：小功率(lv)、小型(xing)無刷(shua)電(dian)機需要(yao)搭配齒輪箱(xiang)一起使用(yong)(yong)，廣泛應(ying)用(yong)(yong)在(zai)智能汽車驅(qu)(qu)動(dong)(dong)器、機器人驅(qu)(qu)動(dong)(dong)、智能家居驅(qu)(qu)動(dong)(dong)、家用(yong)(yong)電(dian)器驅(qu)(qu)動(dong)(dong)、消費電(dian)子產品(pin)驅(qu)(qu)動(dong)(dong)、通訊設備驅(qu)(qu)動(dong)(dong)、醫療設備驅(qu)(qu)動(dong)(dong)、電(dian)子鎖具驅(qu)(qu)動(dong)(dong)等(deng)行業和設備。