通常(chang)我們把(ba)直流(liu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)分為有(you)刷(shua)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)和無刷(shua)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)兩(liang)種(zhong)。直流(liu)無刷(shua)減速(su)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)制動(dong)(dong)是(shi)通常(chang)利用電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)自身進(jin)(jin)行快(kuai)速(su)制動(dong)(dong)有(you)兩(liang)種(zhong)簡單的(de)辦法，一(yi)種(zhong)是(shi)能(neng)(neng)耗制動(dong)(dong)，一(yi)種(zhong)是(shi)短(duan)接(jie)(jie)(jie)制動(dong)(dong)，能(neng)(neng)耗制動(dong)(dong)是(shi)把(ba)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)動(dong)(dong)能(neng)(neng)消(xiao)耗在外部制動(dong)(dong)電(dian)(dian)(dian)(dian)(dian)阻上，短(duan)接(jie)(jie)(jie)制動(dong)(dong)是(shi)把(ba)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)動(dong)(dong)能(neng)(neng)消(xiao)耗在電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)定子(zi)繞組(zu)上。顯然能(neng)(neng)耗制動(dong)(dong)對(dui)于減少電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)發(fa)熱更(geng)加有(you)利。但(dan)是(shi)短(duan)接(jie)(jie)(jie)制動(dong)(dong)不需要對(dui)于硬(ying)件進(jin)(jin)行改動(dong)(dong)，簡單方便是(shi)其(qi)突出的(de)特(te)點(dian)，所(suo)以(yi)重(zhong)點(dian)研究短(duan)接(jie)(jie)(jie)制動(dong)(dong)。

所謂短(duan)(duan)(duan)接制動(dong)(dong)是(shi)指在剎(cha)車時能(neng)(neng)做到(dao)讓(rang)電(dian)(dian)機的傳動(dong)(dong)MOS管(guan)上橋(qiao)臂（或者下橋(qiao)臂）全(quan)部(bu)導(dao)通(tong)而(er)下橋(qiao)臂（或者上橋(qiao)臂）截止狀態(tai)，電(dian)(dian)機的三相(xiang)定(ding)子繞(rao)(rao)組全(quan)部(bu)被短(duan)(duan)(duan)接。處于(yu)發電(dian)(dian)狀態(tai)的電(dian)(dian)機，相(xiang)當(dang)于(yu)電(dian)(dian)源被短(duan)(duan)(duan)路。因為(wei)繞(rao)(rao)組的電(dian)(dian)阻比較(jiao)小，所以能(neng)(neng)產生很大的短(duan)(duan)(duan)路電(dian)(dian)流，電(dian)(dian)機的動(dong)(dong)能(neng)(neng)被快速釋放，從(cong)而(er)使電(dian)(dian)機瞬(shun)時產生大的制動(dong)(dong)力矩，能(neng)(neng)夠達(da)到(dao)快速剎(cha)車的效果。電(dian)(dian)機速度(du)越，短(duan)(duan)(duan)路電(dian)(dian)流越大，制動(dong)(dong)力也越大。但是(shi)必須(xu)考慮不能(neng)(neng)夠超過(guo)超過(guo)MOS管(guan)的承受能(neng)(neng)力，因此一(yi)般等(deng)待電(dian)(dian)機速度(du)降低到(dao)一(yi)定(ding)程度(du)再使用短(duan)(duan)(duan)接制動(dong)(dong)。

兆威生產的減速電機均可以配無刷馬達，有刷馬達，步進電機，空心杯電機等。公司產品主要以行星精密齒輪箱，傳動智能的微型減速電機為主。

直流(liu)無(wu)刷減速電機應用智(zhi)能汽(qi)車傳動、5G通訊設備(bei)、智(zhi)能機器人、智(zhi)能家居、電子產品等領域。