導風電動(dong)機的性(xing)能特點(dian)
1.導風電動機
導(dao)風(feng)電動(dong)(dong)機(ji)(ji)又稱擺(bai)葉(xie)電動(dong)(dong)機(ji)(ji),它來回擺(bai)動(dong)(dong)可將室內風(feng)扇吹出的冷風(feng)自(zi)動(dong)(dong)導(dao)出,實現大角度(du)多(duo)方向(xiang)送風(feng)。導(dao)風(feng)電動(dong)(dong)機(ji)(ji)分為脈(mo)沖(chong)步進電動(dong)(dong)機(ji)(ji)與同(tong)步電動(dong)(dong)機(ji)(ji)兩(liang)種(zhong)。
(1)脈(mo)沖(chong)(chong)步(bu)(bu)進(jin)電(dian)(dian)(dian)動機(ji)工作原理:脈(mo)沖(chong)(chong)步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)控(kong)制(zhi)(zhi)系統由步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)控(kong)制(zhi)(zhi)器、步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)驅(qu)(qu)動器、步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)三部分(fen)組成,步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)控(kong)制(zhi)(zhi)器是指揮中心,它(ta)發出信(xin)號(hao)脈(mo)沖(chong)(chong)給步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)驅(qu)(qu)動器,而步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)驅(qu)(qu)動器把接收到(dao)信(xin)號(hao)脈(mo)沖(chong)(chong)脈(mo)沖(chong)(chong)轉(zhuan)(zhuan)(zhuan)化為電(dian)(dian)(dian)脈(mo)沖(chong)(chong),驅(qu)(qu)動步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)轉(zhuan)(zhuan)(zhuan)動,控(kong)制(zhi)(zhi)器每發出一個(ge)信(xin)號(hao)脈(mo)沖(chong)(chong),步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)就(jiu)旋(xuan)轉(zhuan)(zhuan)(zhuan)一個(ge)角(jiao)(jiao)度(du)(du),它(ta)的(de)(de)旋(xuan)轉(zhuan)(zhuan)(zhuan)是以(yi)固定(ding)的(de)(de)角(jiao)(jiao)度(du)(du)一步(bu)(bu)一步(bu)(bu)運(yun)行的(de)(de)。控(kong)制(zhi)(zhi)器可以(yi)通過控(kong)制(zhi)(zhi)脈(mo)沖(chong)(chong)數量來控(kong)制(zhi)(zhi)步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)的(de)(de)旋(xuan)轉(zhuan)(zhuan)(zhuan)角(jiao)(jiao)度(du)(du),從而準(zhun)確定(ding)位。通過控(kong)制(zhi)(zhi)脈(mo)沖(chong)(chong)頻率精(jing)確控(kong)制(zhi)(zhi)步(bu)(bu)進(jin)電(dian)(dian)(dian)機(ji)的(de)(de)旋(xuan)轉(zhuan)(zhuan)(zhuan)速度(du)(du)。
脈沖步進電動(dong)機特點(dian):
1.系統控制(zhi)慣性小(xiao),速度較高。
2.輸出脈(mo)沖準確(que)。
3.實時性強(qiang)。
4.抗電磁特(te)性好,抗干擾能力強。
(2)同步(bu)導風電動(dong)機(ji)(ji)工作原理(li):同步(bu)電動(dong)機(ji)(ji)工作時,定子(zi)(zi)的三相(xiang)繞(rao)(rao)組中(zhong)通(tong)入三相(xiang)對稱電流(liu)(liu)(liu),轉(zhuan)(zhuan)(zhuan)子(zi)(zi)的勵磁(ci)繞(rao)(rao)組通(tong)入直(zhi)流(liu)(liu)(liu)電流(liu)(liu)(liu)。在(zai)定子(zi)(zi)三相(xiang)對稱繞(rao)(rao)組中(zhong)通(tong)入三相(xiang)交變電流(liu)(liu)(liu)時,將在(zai)氣隙中(zhong)產(chan)生旋(xuan)轉(zhuan)(zhuan)(zhuan)磁(ci)場。在(zai)轉(zhuan)(zhuan)(zhuan)子(zi)(zi)勵磁(ci)繞(rao)(rao)組中(zhong)通(tong)人直(zhi)流(liu)(liu)(liu)電流(liu)(liu)(liu)時,將產(chan)生極(ji)(ji)性恒(heng)定的靜(jing)止磁(ci)場。若轉(zhuan)(zhuan)(zhuan)子(zi)(zi)磁(ci)場的磁(ci)極(ji)(ji)對數與(yu)定子(zi)(zi)磁(ci)場的磁(ci)極(ji)(ji)對數相(xiang)等(deng),轉(zhuan)(zhuan)(zhuan)子(zi)(zi)磁(ci)場因受定子(zi)(zi)磁(ci)場磁(ci)拉力作用而隨(sui)定子(zi)(zi)旋(xuan)轉(zhuan)(zhuan)(zhuan)磁(ci)場同步(bu)旋(xuan)轉(zhuan)(zhuan)(zhuan),即轉(zhuan)(zhuan)(zhuan)子(zi)(zi)以等(deng)同于旋(xuan)轉(zhuan)(zhuan)(zhuan)磁(ci)場的速(su)度(du)、方向旋(xuan)轉(zhuan)(zhuan)(zhuan),這就是同步(bu)電動(dong)機(ji)(ji)的基本(ben)工作原理(li)。
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