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重慶電機維修淺析導風電動機的特點是什么？

導(dao)風電動(dong)機(ji)又稱擺(bai)葉電動(dong)機(ji)，它來回擺(bai)動(dong)可將室內風扇(shan)吹出的冷風自動(dong)導(dao)出，實現(xian)大(da)角度多(duo)方向(xiang)送風。導(dao)風電動(dong)機(ji)分為脈(mo)沖(chong)步進電動(dong)機(ji)與同步電動(dong)機(ji)兩種(zhong)。

（1）脈(mo)(mo)(mo)沖(chong)(chong)(chong)步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)動機(ji)(ji)工作原(yuan)理：脈(mo)(mo)(mo)沖(chong)(chong)(chong)步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)控(kong)制(zhi)系統由步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)控(kong)制(zhi)器(qi)、步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)驅(qu)動器(qi)、步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)三部分組成，步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)控(kong)制(zhi)器(qi)是(shi)指揮中心，它發出(chu)信號(hao)脈(mo)(mo)(mo)沖(chong)(chong)(chong)給(gei)步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)驅(qu)動器(qi)，而步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)驅(qu)動器(qi)把接收(shou)到(dao)信號(hao)脈(mo)(mo)(mo)沖(chong)(chong)(chong)脈(mo)(mo)(mo)沖(chong)(chong)(chong)轉化為電(dian)(dian)(dian)脈(mo)(mo)(mo)沖(chong)(chong)(chong),驅(qu)動步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)轉動，控(kong)制(zhi)器(qi)每發出(chu)一個(ge)信號(hao)脈(mo)(mo)(mo)沖(chong)(chong)(chong)，步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)就旋轉一個(ge)角(jiao)度(du),它的(de)旋轉是(shi)以固(gu)定的(de)角(jiao)度(du)一步(bu)(bu)(bu)(bu)一步(bu)(bu)(bu)(bu)運行的(de)。控(kong)制(zhi)器(qi)可以通過(guo)控(kong)制(zhi)脈(mo)(mo)(mo)沖(chong)(chong)(chong)數量來控(kong)制(zhi)步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)的(de)旋轉角(jiao)度(du)，從而準確定位。通過(guo)控(kong)制(zhi)脈(mo)(mo)(mo)沖(chong)(chong)(chong)頻率精確控(kong)制(zhi)步(bu)(bu)(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)(ji)的(de)旋轉速度(du)。

脈沖步進電動機(ji)特點：

1.系統控制慣性小，速度較高。

2.輸(shu)出脈沖準(zhun)確。

3.實(shi)時性強。

4.抗電(dian)磁特性好，抗干(gan)擾能力強。

（2）同(tong)步(bu)導風電動(dong)(dong)機(ji)(ji)工作原理：同(tong)步(bu)電動(dong)(dong)機(ji)(ji)工作時，定子(zi)(zi)的(de)(de)三相(xiang)繞組(zu)中通(tong)入三相(xiang)對(dui)(dui)(dui)稱電流，轉(zhuan)子(zi)(zi)的(de)(de)勵磁(ci)(ci)(ci)繞組(zu)通(tong)入直(zhi)流電流。在定子(zi)(zi)三相(xiang)對(dui)(dui)(dui)稱繞組(zu)中通(tong)入三相(xiang)交變電流時，將(jiang)在氣隙中產(chan)生(sheng)(sheng)旋(xuan)(xuan)轉(zhuan)磁(ci)(ci)(ci)場(chang)(chang)。在轉(zhuan)子(zi)(zi)勵磁(ci)(ci)(ci)繞組(zu)中通(tong)人(ren)直(zhi)流電流時，將(jiang)產(chan)生(sheng)(sheng)極性恒(heng)定的(de)(de)靜止磁(ci)(ci)(ci)場(chang)(chang)。若(ruo)轉(zhuan)子(zi)(zi)磁(ci)(ci)(ci)場(chang)(chang)的(de)(de)磁(ci)(ci)(ci)極對(dui)(dui)(dui)數與定子(zi)(zi)磁(ci)(ci)(ci)場(chang)(chang)的(de)(de)磁(ci)(ci)(ci)極對(dui)(dui)(dui)數相(xiang)等，轉(zhuan)子(zi)(zi)磁(ci)(ci)(ci)場(chang)(chang)因受定子(zi)(zi)磁(ci)(ci)(ci)場(chang)(chang)磁(ci)(ci)(ci)拉(la)力作用而隨定子(zi)(zi)旋(xuan)(xuan)轉(zhuan)磁(ci)(ci)(ci)場(chang)(chang)同(tong)步(bu)旋(xuan)(xuan)轉(zhuan)，即轉(zhuan)子(zi)(zi)以等同(tong)于(yu)旋(xuan)(xuan)轉(zhuan)磁(ci)(ci)(ci)場(chang)(chang)的(de)(de)速度、方向旋(xuan)(xuan)轉(zhuan)，這就是同(tong)步(bu)電動(dong)(dong)機(ji)(ji)的(de)(de)基本(ben)工作原理。