行(xing)星(xing)減(jian)(jian)速機(ji)(ji)(ji)的主(zhu)要結構由(you)驅動(dong)電機(ji)(ji)(ji)、行(xing)星(xing)齒(chi)輪箱組裝而(er)成；行(xing)星(xing)減(jian)(jian)速機(ji)(ji)(ji)可(ke)以配什么電機(ji)(ji)(ji)？常用的驅動(dong)電機(ji)(ji)(ji)有(you)直(zhi)流(liu)有(you)刷電機(ji)(ji)(ji)、直(zhi)流(liu)無刷電機(ji)(ji)(ji)、步進電機(ji)(ji)(ji)、空心杯電機(ji)(ji)(ji)以及伺服(fu)電機(ji)(ji)(ji)作為驅動(dong)電機(ji)(ji)(ji)。

直流有刷電機：直流有刷電機是一種直流電機，有刷電機的定子上安裝有固定的主磁極和電刷，轉子上安裝有電樞繞組和換向器。直流電源的電能通過電刷和換向器進入電樞繞組，產生電樞電流，電樞電流產生的磁場與主磁場相互作用產生電磁轉矩，使電機旋轉帶動負載。由于電刷和換向器的存在，直流有刷電機的結構復雜，可靠性差，故障多，維護工作量大，壽命短，換向火花易產生電磁干擾。直流有刷電機可以配合搭載行星齒輪箱一起使用，這種產品稱為行星直流有刷減速電機。

直(zhi)流(liu)(liu)(liu)無(wu)刷電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)：無(wu)刷直(zhi)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)由(you)電(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)主體(ti)和驅動器組成，是一(yi)種(zhong)典型的(de)(de)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)一(yi)體(ti)化產品(pin)。 無(wu)刷電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)是指無(wu)電(dian)(dian)(dian)(dian)刷和換向器（或集電(dian)(dian)(dian)(dian)環）的(de)(de)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)，又(you)稱無(wu)換向器電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)。直(zhi)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)具(ju)有響應快速、較大的(de)(de)起動轉(zhuan)(zhuan)矩、從零轉(zhuan)(zhuan)速至(zhi)額(e)定(ding)轉(zhuan)(zhuan)速具(ju)備可提供額(e)定(ding)轉(zhuan)(zhuan)矩的(de)(de)性能，但直(zhi)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)優點也正是它的(de)(de)缺點，因為直(zhi)流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)要產生額(e)定(ding)負載下恒(heng)定(ding)轉(zhuan)(zhuan)矩的(de)(de)性能，則電(dian)(dian)(dian)(dian)樞磁場與轉(zhuan)(zhuan)子磁場須恒(heng)維持90°，這就要藉(jie)由(you)碳刷及整流(liu)(liu)(liu)子。直(zhi)流(liu)(liu)(liu)無(wu)刷電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)可以搭(da)載行星齒輪箱一(yi)起使用，這種(zhong)組裝產品(pin)稱為直(zhi)流(liu)(liu)(liu)無(wu)刷行星減(jian)速電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)。

步(bu)(bu)進(jin)(jin)電(dian)機：步(bu)(bu)進(jin)(jin)電(dian)機又(you)稱(cheng)為脈沖電(dian)機，基(ji)于最基(ji)本的(de)電(dian)磁鐵原理，它是一種可以(yi)自由回轉(zhuan)(zhuan)的(de)電(dian)磁鐵，其(qi)動作原理是依靠氣隙磁導的(de)變化(hua)(hua)來產(chan)生(sheng)電(dian)磁轉(zhuan)(zhuan)矩。步(bu)(bu)進(jin)(jin)電(dian)機相對于其(qi)它控制(zhi)(zhi)用途電(dian)機的(de)最大區別(bie)是，它接(jie)收數(shu)字控制(zhi)(zhi)信(xin)(xin)號（電(dian)脈沖信(xin)(xin)號）并轉(zhuan)(zhuan)化(hua)(hua)成與之相對應的(de)角(jiao)位(wei)移(yi)或直線位(wei)移(yi)，它本身就是一個(ge)完成數(shu)字模式轉(zhuan)(zhuan)化(hua)(hua)的(de)執行元件(jian)；步(bu)(bu)進(jin)(jin)電(dian)機。

空(kong)(kong)(kong)心(xin)杯(bei)電(dian)機(ji)(ji)：空(kong)(kong)(kong)心(xin)杯(bei)電(dian)動(dong)機(ji)(ji)屬于(yu)直流(liu)永磁的(de)(de)伺服、控(kong)制電(dian)動(dong)機(ji)(ji)，也可以將其歸類為微特電(dian)機(ji)(ji)。空(kong)(kong)(kong)心(xin)杯(bei)電(dian)動(dong)機(ji)(ji)具有(you)突出的(de)(de)節能特性、靈敏方便的(de)(de)控(kong)制特性和(he)(he)穩(wen)定的(de)(de)運行特性，廣泛應用(yong)在行星(xing)(xing)齒輪箱(xiang)中(zhong)，空(kong)(kong)(kong)心(xin)杯(bei)電(dian)機(ji)(ji)也分為有(you)刷和(he)(he)無刷兩種，有(you)刷空(kong)(kong)(kong)心(xin)杯(bei)電(dian)機(ji)(ji)轉(zhuan)子無鐵(tie)(tie)芯(xin)，無刷空(kong)(kong)(kong)心(xin)杯(bei)電(dian)機(ji)(ji)定子無鐵(tie)(tie)芯(xin)；空(kong)(kong)(kong)心(xin)杯(bei)電(dian)機(ji)(ji)采用(yong)行星(xing)(xing)齒輪箱(xiang)作為減速器，這(zhe)種設(she)備(bei)稱為空(kong)(kong)(kong)心(xin)杯(bei)行星(xing)(xing)減速電(dian)機(ji)(ji)。

不同(tong)的(de)驅(qu)動驅(qu)動電(dian)(dian)機具備的(de)性能(neng)特點也不同(tong)，在選擇(ze)驅(qu)動電(dian)(dian)機的(de)時候(hou)需(xu)要根據需(xu)求，或者(zhe)技術工程師提供指導意見。