首(shou)先我們來介紹有刷直流(liu)電機

　　原理(li)：無論(lun)是(shi)微(wei)型有刷(shua)直(zhi)(zhi)流(liu)電(dian)(dian)(dian)(dian)機還(huan)是(shi)大型的有刷(shua)直(zhi)(zhi)流(liu)電(dian)(dian)(dian)(dian)機在(zai)定(ding)子上都有安裝固定(ding)主(zhu)磁極與電(dian)(dian)(dian)(dian)刷(shua)，而(er)在(zai)轉(zhuan)子上有電(dian)(dian)(dian)(dian)樞(shu)繞組與換向器，直(zhi)(zhi)流(liu)電(dian)(dian)(dian)(dian)源會通過電(dian)(dian)(dian)(dian)刷(shua)與換向器進入電(dian)(dian)(dian)(dian)樞(shu)繞組從而(er)產生電(dian)(dian)(dian)(dian)流(liu)，電(dian)(dian)(dian)(dian)樞(shu)的電(dian)(dian)(dian)(dian)流(liu)產生的磁場(chang)會與主(zhu)磁場(chang)產生相互作用（電(dian)(dian)(dian)(dian)磁轉(zhuan)矩），使微(wei)型電(dian)(dian)(dian)(dian)機旋轉(zhuan)帶動負載。

　　有刷(shua)直流電(dian)機用途

　　美(mei)容儀、電動(dong)牙刷(shua)、電子鎖(suo)、成人用品、辦公用品、汽車后視(shi)鏡(jing)、風扇、醫療器械等(deng)等(deng)都會(hui)用到微型有刷(shua)直(zhi)流(liu)電機，在武器裝(zhuang)備(bei)中的導彈、火(huo)炮、艦艇(ting)、飛(fei)機、坦克、戰車、雷達、火(huo)箭(jian)等(deng)等(deng)也不缺(que)乏對直(zhi)流(liu)電機的應(ying)(ying)用，關于(yu)有刷(shua)直(zhi)流(liu)電機的應(ying)(ying)用可(ke)以說是(shi)舉不勝舉，無處不在。

　　無(wu)刷永磁直流(liu)電機

　　無刷(shua)直(zhi)流(liu)直(zhi)流(liu)電(dian)機(ji)體(ti)積(ji)小、結構簡單、效(xiao)率(lv)高，應(ying)有(you)(you)也是極為(wei)廣泛，它可以(yi)通過改變電(dian)樞(shu)的(de)電(dian)壓來調速非常方便。無刷(shua)直(zhi)流(liu)電(dian)機(ji)主要是由電(dian)機(ji)主體(ti)和驅動器(qi)組成（以(yi)前也有(you)(you)發布過無刷(shua)直(zhi)流(liu)電(dian)機(ji)的(de)原理，不(bu)多贅(zhui)述，有(you)(you)興趣可以(yi)去(qu)翻看）。無刷(shua)直(zhi)流(liu)電(dian)機(ji)所用的(de)材料不(bu)同可分(fen)為(wei)鋁、鎳(nie)、鈷(gu)、鐵氧體(ti)、稀土永磁直(zhi)流(liu)電(dian)機(ji)，而價格高的(de)鋁、鎳(nie)、鈷(gu)電(dian)機(ji)需要消耗大量的(de)貴(gui)金(jin)屬，一般用在環境(jing)溫度較高的(de)場所。

　　鐵(tie)氧體(ti)一般用(yong)在(zai)微型(xing)無刷直(zhi)(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)機上(shang)，價(jia)格在(zai)無刷電(dian)(dian)(dian)(dian)(dian)機類算是比叫便(bian)宜了(le)，性(xing)(xing)能也不錯，在(zai)家用(yong)小電(dian)(dian)(dian)(dian)(dian)器(qi)、汽車、電(dian)(dian)(dian)(dian)(dian)動工具(ju)、玩具(ju)上(shang)應用(yong)比較多。而另(ling)外(wai)一種稀土永磁直(zhi)(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)機體(ti)積更小、性(xing)(xing)能更好，價(jia)格也更高，只有航(hang)(hang)空航(hang)(hang)天(tian)、計算機、精密儀器(qi)才會用(yong)到(dao)。但是如今出現的釹鐵(tie)硼(peng)永磁直(zhi)(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)機因質優、價(jia)廉的優勢秒(miao)殺了(le)大(da)部分類型(xing)的無刷直(zhi)(zhi)流(liu)電(dian)(dian)(dian)(dian)(dian)機。

　　不過對于選用(yong)直流電(dian)機還是要依據自己產品應用(yong)需求來選擇：可(ke)以優先選用(yong)效率高(gao)、價格便宜、溫升低(di)的(de)鐵氧體(ti)直流電(dian)機，對于要求嚴格體(ti)積小、環(huan)境(jing)溫度高(gao)的(de)環(huan)境(jing)可(ke)考慮鋁鎳鈷永(yong)磁直流電(dian)動(dong)機或(huo)稀土(tu)永(yong)磁直流電(dian)動(dong)機。

　　隨著現在直流電(dian)(dian)機的(de)應用增加(jia)，以(yi)前(qian)使(shi)用的(de)交流電(dian)(dian)機大多被永磁(ci)直流電(dian)(dian)機代替，尤其是(shi)無刷(shua)直流電(dian)(dian)機的(de)出現，我國每年的(de)生(sheng)(sheng)產(chan)(chan)數(shu)量都在不斷的(de)上(shang)升（每年幾(ji)十(shi)億臺），而生(sheng)(sheng)產(chan)(chan)直流電(dian)(dian)機的(de)生(sheng)(sheng)產(chan)(chan)廠(chang)家更(geng)是(shi)不計其數(shu)。天(tian)孚電(dian)(dian)機目(mu)前(qian)主要是(shi)研(yan)發(fa)生(sheng)(sheng)產(chan)(chan)微(wei)型(xing)直流電(dian)(dian)機系列產(chan)(chan)品(pin)，以(yi)有刷(shua)直流電(dian)(dian)機為主，經過不斷的(de)研(yan)究改進，目(mu)前(qian)的(de)有刷(shua)直流電(dian)(dian)機已經不亞于無刷(shua)直流電(dian)(dian)機了，使(shi)企業更(geng)加(jia)節約生(sheng)(sheng)產(chan)(chan)研(yan)發(fa)成(cheng)本。