dd馬達運(yun)用(yong)外(wai)轉(zhuan)子結(jie)構，不同之處交(jiao)流伺服運(yun)用(yong)內(nei)轉(zhuan)子結(jie)構。電(dian)機(ji)內(nei)部磁極數也比較大，導致啟(qi)動轉(zhuan)矩(ju)和旋(xuan)轉(zhuan)轉(zhuan)矩(ju)較大。電(dian)機(ji)使用(yong)的(de)徑(jing)向軸承(cheng)能承(cheng)受(shou)較大的(de)軸向力。

　　該編碼器是(shi)一種(zhong)高(gao)分辨率的(de)圓(yuan)形光柵(zha)。dd直(zhi)(zhi)(zhi)接驅(qu)動(dong)電(dian)機(ji)(ji)具有原點和(he)(he)極限輸出的(de)圓(yuan)光柵(zha)分辨率為(wei)2097152ppR.由于(yu)高(gao)精(jing)度的(de)測量(liang)反饋和(he)(he)高(gao)水平(ping)的(de)制(zhi)造工(gong)藝(yi)，直(zhi)(zhi)(zhi)線電(dian)機(ji)(ji)模組DD電(dian)機(ji)(ji)的(de)定位精(jing)度可以達(da)到第二級。（如DME5A系列絕對(dui)精(jing)度為(wei)±25弧秒(miao)，重復定位精(jing)度為(wei)±1弧秒(miao)）Dd馬(ma)達(da)適用于(yu)各種(zhong)工(gong)業(ye)設(she)(she)備(bei)(bei)機(ji)(ji)械，特別是(shi)半(ban)導體(ti)制(zhi)造、檢測設(she)(she)備(bei)(bei)和(he)(he)液(ye)晶(jing)制(zhi)造設(she)(she)備(bei)(bei)。例(li)如：數控機(ji)(ji)床加工(gong)中心、3C制(zhi)造行業(ye)、直(zhi)(zhi)(zhi)線電(dian)機(ji)(ji)模組醫療設(she)(she)備(bei)(bei)、制(zhi)藥行業(ye)、半(ban)導體(ti)直(zhi)(zhi)(zhi)線電(dian)機(ji)(ji)模組制(zhi)造、工(gong)業(ye)機(ji)(ji)器人、液(ye)晶(jing)面板設(she)(she)備(bei)(bei)、激光制(zhi)造設(she)(she)備(bei)(bei)等領域都有應用。

　　直線電(dian)(dian)(dian)機模組(zu)(zu)DD馬達不同之處普(pu)通電(dian)(dian)(dian)機，它(ta)運用內(nei)部轉子結(jie)構(gou)。該編碼器是一種高分辨率光(guang)電(dian)(dian)(dian)編碼器。Dd直驅電(dian)(dian)(dian)機有(you)(you)原點。由于(yu)(yu)高水(shui)平的制造工藝(yi)保證和高精(jing)度(du)的測量反饋，電(dian)(dian)(dian)機的定(ding)位精(jing)度(du)可以達到(dao)第(di)二級。DDM通常具有(you)(you)混合結(jie)構(gou)。定(ding)子由釹鐵硼和永磁(ci)線圈繞組(zu)(zu)組(zu)(zu)成。由磁(ci)鐵產生的永磁(ci)磁(ci)場(chang)回路和勵磁(ci)磁(ci)場(chang)回路產生電(dian)(dian)(dian)磁(ci)力，電(dian)(dian)(dian)磁(ci)力在線圈通電(dian)(dian)(dian)后作用于(yu)(yu)齒輪間(jian)隙，使直線電(dian)(dian)(dian)機的DD電(dian)(dian)(dian)機模組(zu)(zu)，沿組(zu)(zu)合方向旋(xuan)轉。與步進電(dian)(dian)(dian)機相比，DD電(dian)(dian)(dian)機在材質和精(jing)度(du)上(shang)都有(you)(you)極高的要求。扭矩和速度(du)特(te)性(xing)也非(fei)常相似(si)，保持高扭矩和操作扭矩隨(sui)速度(du)的增加而減小。