直流調速器是(shi)一種電(dian)(dian)(dian)機調(diao)(diao)速裝(zhuang)置，包括電(dian)(dian)(dian)機直(zhi)(zhi)流(liu)調(diao)(diao)速器(qi),脈寬直(zhi)(zhi)流(liu)調(diao)(diao)速器(qi),可(ke)(ke)控硅直(zhi)(zhi)流(liu)調(diao)(diao)速器(qi)等.一般為模塊式直(zhi)(zhi)流(liu)電(dian)(dian)(dian)機調(diao)(diao)速器(qi)，集電(dian)(dian)(dian)源(yuan)、控制、驅動電(dian)(dian)(dian)路(lu)于一體(ti)，采用立(li)體(ti)結(jie)構(gou)布(bu)局，控制電(dian)(dian)(dian)路(lu)采用微(wei)功(gong)(gong)耗元件，用光電(dian)(dian)(dian)耦合器(qi)實現電(dian)(dian)(dian)流(liu)、電(dian)(dian)(dian)壓的(de)隔離變(bian)換(huan)，電(dian)(dian)(dian)路(lu)的(de)比例常(chang)數、積(ji)分常(chang)數和微(wei)分常(chang)數用PID適配器(qi)調(diao)(diao)整。該(gai)調(diao)(diao)速器(qi)體(ti)積(ji)小、重量輕，可(ke)(ke)單(dan)獨使用也可(ke)(ke)直(zhi)(zhi)接安裝(zhuang)在直(zhi)(zhi)流(liu)電(dian)(dian)(dian)機上(shang)構(gou)成一體(ti)化直(zhi)(zhi)流(liu)調(diao)(diao)速電(dian)(dian)(dian)機，可(ke)(ke)具有(you)調(diao)(diao)速器(qi)所(suo)應有(you)的(de) 功(gong)(gong)能(neng)。

　　直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)調(diao)速(su)(su)(su)器(qi)就是調(diao)節直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)速(su)(su)(su)度的(de)設(she)備，上端和交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)源連接，下(xia)端和直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)連接，直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)調(diao)速(su)(su)(su)器(qi)將交(jiao)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)轉化成兩(liang)路(lu)(lu)輸(shu)出直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)源，一(yi)路(lu)(lu)輸(shu)入給(gei) 直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)礪(li)磁(ci)(定(ding)子)，一(yi)路(lu)(lu)輸(shu)入給(gei)直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)(轉子)，直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)調(diao)速(su)(su)(su)器(qi)通過控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)來調(diao)節直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)轉速(su)(su)(su)。同時直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)給(gei)調(diao)速(su)(su)(su)器(qi)一(yi)個反饋電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)，調(diao)速(su)(su)(su)器(qi)根據反饋電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)來判斷(duan)直(zhi)(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)轉速(su)(su)(su)情況， 時修(xiu)正電(dian)(dian)(dian)(dian)(dian)(dian)樞(shu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)輸(shu)出，以此(ci)來再次調(diao)節電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)轉速(su)(su)(su)。

　　直流調速器的特點和使用(yong)場合：

　　1需要較寬(kuan)的(de)調速范圍(wei)。

　　2 需要較(jiao)快的動態(tai)響應過程。

　　3 加、減速時(shi)需(xu)要自(zi)動(dong)平滑(hua)的過(guo)渡(du)過(guo)程

　　4 需(xu)要(yao)低(di)速(su)運轉時力矩大。

　　5 需要較(jiao)好的挖土(tu)機特(te)(te)性，能夠(gou)將(jiang)過載(zai)電(dian)流(liu)自動(dong)限(xian)止在(zai)設定電(dian)流(liu)上 6 需要緊急停車狀態，以上六點也是直(zhi)流(liu)調速器(qi)的應(ying)用特(te)(te)點。