直(zhi)(zhi)(zhi)線(xian)(xian)電(dian)(dian)(dian)機(ji)步(bu)進(jin)電(dian)(dian)(dian)機(ji)又(you)稱線(xian)(xian)性步(bu)進(jin)電(dian)(dian)(dian)機(ji)，是由磁轉(zhuan)子(zi)通(tong)過鐵芯定(ding)子(zi)產生的(de)(de)脈沖(chong)電(dian)(dian)(dian)磁場的(de)(de)相互作用(yong)而(er)旋轉(zhuan)，直(zhi)(zhi)(zhi)線(xian)(xian)步(bu)進(jin)電(dian)(dian)(dian)機(ji)在電(dian)(dian)(dian)機(ji)內部旋轉(zhuan)運(yun)動呈直(zhi)(zhi)(zhi)線(xian)(xian)運(yun)動。直(zhi)(zhi)(zhi)線(xian)(xian)步(bu)進(jin)電(dian)(dian)(dian)機(ji)能都直(zhi)(zhi)(zhi)接(jie)作直(zhi)(zhi)(zhi)線(xian)(xian)運(yun)動或者直(zhi)(zhi)(zhi)線(xian)(xian)往(wang)復運(yun)動，如(ru)果以旋轉(zhuan)電(dian)(dian)(dian)機(ji)為動力源(yuan)，轉(zhuan)化(hua)為直(zhi)(zhi)(zhi)線(xian)(xian)運(yun)動，則需要(yao)齒輪(lun)、凸輪(lun)結構和鋼(gang)絲等機(ji)構。

 所(suo)以，設計(ji)簡(jian)化，導(dao)致(zhi)在(zai)好(hao)多技術應用中(zhong)能夠直(zhi)(zhi)接采(cai)用直(zhi)(zhi)線步(bu)進電機暫停(ting)精(jing)密的直(zhi)(zhi)線運動，而不需外部的機械連桿安裝。外驅動直(zhi)(zhi)線電機的結構和旋轉。

 與(yu)旋轉電機相比(bi)較，直線步進電機能夠直線運動，使機器實用(yong)化，設計變(bian)得容易。其他驅動直線步進電機的轉子是一個(ge)永磁(ci)體。當(dang)電流流過定(ding)子繞組時，定(ding)西繞組產生(sheng)矢量(liang)磁(ci)場。

 磁(ci)場會(hui)與驅(qu)動(dong)轉(zhuan)子以一(yi)(yi)(yi)(yi)定(ding)的(de)(de)(de)角(jiao)度(du)(du)(du)旋轉(zhuan)，使轉(zhuan)子的(de)(de)(de)一(yi)(yi)(yi)(yi)對磁(ci)場的(de)(de)(de)方向不同(tong)。當(dang)定(ding)子的(de)(de)(de)矢量(liang)磁(ci)場旋轉(zhuan)一(yi)(yi)(yi)(yi)個角(jiao)度(du)(du)(du)時。轉(zhuan)子也與磁(ci)場旋轉(zhuan)一(yi)(yi)(yi)(yi)個角(jiao)度(du)(du)(du)。每(mei)次輸(shu)入一(yi)(yi)(yi)(yi)個電脈(mo)沖(chong)，電動(dong)轉(zhuan)子平行旋轉(zhuan)一(yi)(yi)(yi)(yi)個角(jiao)度(du)(du)(du)。其輸(shu)出角(jiao)位移與輸(shu)入脈(mo)沖(chong)數成正比，速度(du)(du)(du)與脈(mo)沖(chong)頻率成正比。改變繞組(zu)功率，電機(ji)會(hui)反轉(zhuan)。所以能夠(gou)通過控制脈(mo)沖(chong)的(de)(de)(de)個數、頻率和電機(ji)繞組(zu)的(de)(de)(de)相位來控制步進電機(ji)的(de)(de)(de)轉(zhuan)動(dong)。