無刷電機和有刷電機是兩種常用的驅動電機，在使用過程中，無刷電機好？還是有刷電機好呢？下面將詳細介紹兩種驅動電機的優點、缺點。

無(wu)(wu)刷電(dian)(dian)(dian)機(ji)(ji)優(you)點：效(xiao)率(lv)高，能耗低(di)。全球(qiu)范(fan)圍(wei)都(dou)在大(da)(da)力(li)(li)推廣無(wu)(wu)刷電(dian)(dian)(dian)機(ji)(ji)的(de)(de)應(ying)用(yong)，這個(ge)跟無(wu)(wu)刷本(ben)身的(de)(de)性能優(you)勢有很大(da)(da)的(de)(de)關系，從(cong)能源消(xiao)耗角度考(kao)慮，確實是(shi)大(da)(da)勢所趨(qu)。噪音低(di)（靜(jing)(jing)音），運轉順暢。無(wu)(wu)刷電(dian)(dian)(dian)機(ji)(ji)沒有了(le)電(dian)(dian)(dian)刷，運轉時(shi)摩擦力(li)(li)大(da)(da)大(da)(da)減小，運行順暢，噪音會低(di)許多，這個(ge)對(dui)于很多應(ying)用(yong)來說(shuo)都(dou)是(shi)一個(ge)優(you)勢，家(jia)電(dian)(dian)(dian)類，工業自動化，醫療行業等(deng)，都(dou)需(xu)要靜(jing)(jing)音的(de)(de)環境(jing)。壽命長，低(di)維護成本(ben)。無(wu)(wu)刷電(dian)(dian)(dian)機(ji)(ji)的(de)(de)結構特性決定了(le)其壽命很長，在合理(li)的(de)(de)使用(yong)范(fan)圍(wei)內，無(wu)(wu)刷電(dian)(dian)(dian)機(ji)(ji)基本(ben)上不需(xu)要額外的(de)(de)增加(jia)維護成本(ben)。適用(yong)范(fan)圍(wei)廣，控制(zhi)(zhi)效(xiao)果佳(jia)。無(wu)(wu)刷電(dian)(dian)(dian)機(ji)(ji)帶有一個(ge)控制(zhi)(zhi)器（驅動器），可(ke)(ke)以實現從(cong)簡單到復(fu)雜的(de)(de)控制(zhi)(zhi)，并(bing)且可(ke)(ke)以實現各種通訊要求(qiu)，這樣除了(le)滿足一些常(chang)規的(de)(de)機(ji)(ji)械動作以外還能執行復(fu)雜的(de)(de)控制(zhi)(zhi)命令(ling)。并(bing)且隨(sui)著近些年磁(ci)編碼器的(de)(de)廣泛使用(yong)，可(ke)(ke)以代替一些簡易的(de)(de)伺服應(ying)用(yong)。

無(wu)刷(shua)電(dian)(dian)機(ji)(ji)缺點：摩(mo)擦大(da)(da)(da)，損耗大(da)(da)(da)，使用電(dian)(dian)機(ji)(ji)一段時間以(yi)后，需要(yao)打開電(dian)(dian)機(ji)(ji)來清理電(dian)(dian)機(ji)(ji)的(de)(de)(de)碳刷(shua)，費(fei)時費(fei)力(li)，維護強度不亞于來一次家庭大(da)(da)(da)掃(sao)除(chu)。發熱(re)(re)(re)大(da)(da)(da)，壽命(ming)短由于有刷(shua)電(dian)(dian)機(ji)(ji)的(de)(de)(de)結構原因，電(dian)(dian)刷(shua)和換向器的(de)(de)(de)接觸(chu)電(dian)(dian)阻很(hen)(hen)大(da)(da)(da)，造成電(dian)(dian)機(ji)(ji)整體電(dian)(dian)阻較大(da)(da)(da)，容易發熱(re)(re)(re)，而永(yong)磁體是(shi)(shi)熱(re)(re)(re)敏元(yuan)件，如果溫度太高的(de)(de)(de)話，磁鋼是(shi)(shi)會退(tui)磁的(de)(de)(de)，使電(dian)(dian)機(ji)(ji)性能下降，影(ying)響有刷(shua)電(dian)(dian)機(ji)(ji)的(de)(de)(de)壽命(ming)。效(xiao)率低，輸出功率小上面說到的(de)(de)(de)有刷(shua)電(dian)(dian)機(ji)(ji)發熱(re)(re)(re)問題(ti)，很(hen)(hen)大(da)(da)(da)程度是(shi)(shi)因為電(dian)(dian)流做功在電(dian)(dian)機(ji)(ji)內(nei)部電(dian)(dian)阻上了，所以(yi)電(dian)(dian)能有很(hen)(hen)大(da)(da)(da)程度轉化為了熱(re)(re)(re)能，所以(yi)有刷(shua)電(dian)(dian)機(ji)(ji)的(de)(de)(de)輸出功率不大(da)(da)(da)，效(xiao)率也不高。

有(you)刷(shua)電(dian)(dian)機(ji)優點：結構簡單，有(you)刷(shua)電(dian)(dian)機(ji)機(ji)構簡單，生產加工(gong)容易，維修(xiu)方便，容易控制(zhi)(zhi)；直(zhi)流(liu)電(dian)(dian)機(ji)還(huan)具有(you)響應快速(su)(su)(su)、較大的(de)(de)起(qi)動(dong)(dong)(dong)轉(zhuan)矩、從零(ling)轉(zhuan)速(su)(su)(su)至(zhi)額定(ding)轉(zhuan)速(su)(su)(su)具備(bei)可(ke)提供額定(ding)轉(zhuan)矩的(de)(de)性能。運(yun)(yun)行平穩，起(qi)、制(zhi)(zhi)動(dong)(dong)(dong)效果好有(you)刷(shua)電(dian)(dian)機(ji)是(shi)通過(guo)調壓調速(su)(su)(su)，所以起(qi)動(dong)(dong)(dong)和制(zhi)(zhi)動(dong)(dong)(dong)平穩，恒速(su)(su)(su)運(yun)(yun)行時(shi)也平穩。無(wu)(wu)刷(shua)電(dian)(dian)機(ji)通常(chang)(chang)是(shi)數字(zi)變(bian)頻控制(zhi)(zhi)，先(xian)將交流(liu)變(bian)成(cheng)直(zhi)流(liu)，直(zhi)流(liu)再變(bian)成(cheng)交流(liu)，通過(guo)頻率(lv)變(bian)化控制(zhi)(zhi)轉(zhuan)速(su)(su)(su)，所以無(wu)(wu)刷(shua)電(dian)(dian)機(ji)在起(qi)動(dong)(dong)(dong)和制(zhi)(zhi)動(dong)(dong)(dong)時(shi)運(yun)(yun)行不平穩，振動(dong)(dong)(dong)大，只有(you)在速(su)(su)(su)度(du)(du)(du)恒定(ding)時(shi)才(cai)會平穩。控制(zhi)(zhi)精(jing)度(du)(du)(du)高，有(you)刷(shua)電(dian)(dian)機(ji)通常(chang)(chang)和減速(su)(su)(su)箱、譯碼器一起(qi)使(shi)用，使(shi)的(de)(de)電(dian)(dian)機(ji)的(de)(de)輸(shu)出功(gong)率(lv)更大，控制(zhi)(zhi)精(jing)度(du)(du)(du)更高，控制(zhi)(zhi)精(jing)度(du)(du)(du)可(ke)以達(da)到0.01毫米，幾乎可(ke)以讓運(yun)(yun)動(dong)(dong)(dong)部件停在任(ren)何想要(yao)的(de)(de)地方。所有(you)精(jing)密機(ji)床都是(shi)采用直(zhi)流(liu)電(dian)(dian)機(ji)控制(zhi)(zhi)精(jing)度(du)(du)(du)。

有刷(shua)(shua)電(dian)(dian)(dian)機缺(que)點(dian)：電(dian)(dian)(dian)刷(shua)(shua)和換(huan)(huan)向器(qi)之間有摩(mo)擦，造成效(xiao)率(lv)(lv)降低、噪音增加、容易發(fa)熱，有刷(shua)(shua)電(dian)(dian)(dian)機的壽命要比(bi)無(wu)刷(shua)(shua)短幾倍。維護麻煩，需要不停的換(huan)(huan)電(dian)(dian)(dian)刷(shua)(shua)。因(yin)為(wei)電(dian)(dian)(dian)阻大，效(xiao)率(lv)(lv)低、輸出功率(lv)(lv)少(shao)。電(dian)(dian)(dian)刷(shua)(shua)和換(huan)(huan)向器(qi)摩(mo)擦會引(yin)起火(huo)花，干擾大。