步進電機的電機尺寸

我(wo)們(men)一(yi)般(ban)說電(dian)機(ji)(ji)(ji)尺(chi)寸(cun)，講(jiang)的(de)是(shi)電(dian)機(ji)(ji)(ji)機(ji)(ji)(ji)座(zuo)(zuo)的(de)尺(chi)寸(cun)。不同(tong)機(ji)(ji)(ji)座(zuo)(zuo)尺(chi)寸(cun)的(de)步(bu)(bu)進(jin)電(dian)機(ji)(ji)(ji)所能提(ti)供的(de)輸出功率不一(yi)樣，一(yi)般(ban)來說機(ji)(ji)(ji)座(zuo)(zuo)尺(chi)寸(cun)越大(da)，能夠提(ti)供的(de)轉矩(ju)越高。例如，一(yi)個大(da)小(xiao)為(wei)57的(de)步(bu)(bu)進(jin)電(dian)機(ji)(ji)(ji)的(de)直徑為(wei)57毫米；28的(de)步(bu)(bu)進(jin)電(dian)機(ji)(ji)(ji)的(de)直徑為(wei)28毫米。然而(er)大(da)小(xiao)相同(tong)的(de)步(bu)(bu)進(jin)電(dian)機(ji)(ji)(ji)存在(zai)不同(tong)的(de)機(ji)(ji)(ji)型，主(zhu)要體現(xian)在(zai)機(ji)(ji)(ji)身長(chang)度上。一(yi)般(ban)而(er)言，CANopen步(bu)(bu)進(jin)電(dian)機(ji)(ji)(ji)公司，某一(yi)個特定尺(chi)寸(cun)的(de)電(dian)機(ji)(ji)(ji)可用(yong)輸出力矩(ju)會隨(sui)著機(ji)(ji)(ji)身長(chang)度的(de)增加而(er)增加。

步進電機工作原理

當電流(liu)流(liu)過定子繞組時，CANopen步(bu)進(jin)電機(ji)價格，定子繞組產生一(yi)矢量磁場。該磁場會帶動轉子旋轉一(yi)角度，CANopen步(bu)進(jin)電機(ji)，使得轉子的(de)一(yi)對磁場方向與定子的(de)磁場方向一(yi)致。

當定子(zi)的矢量磁場旋轉(zhuan)一個(ge)角(jiao)度(du)。轉(zhuan)子(zi)也(ye)隨著該磁場轉(zhuan)一個(ge)角(jiao)度(du)。每(mei)輸入一個(ge)電(dian)脈沖，電(dian)動機轉(zhuan)動一個(ge)角(jiao)度(du)前進一步。

它輸(shu)出的(de)(de)角位移與(yu)輸(shu)入的(de)(de)脈沖(chong)(chong)(chong)數(shu)成正(zheng)比、轉(zhuan)速與(yu)脈沖(chong)(chong)(chong)頻率成正(zheng)比。改(gai)變繞組通電(dian)(dian)的(de)(de)順序，電(dian)(dian)機(ji)就會(hui)反(fan)轉(zhuan)。所以可用控(kong)制(zhi)脈沖(chong)(chong)(chong)數(shu)量(liang)、頻率及電(dian)(dian)動(dong)機(ji)各相繞組的(de)(de)通電(dian)(dian)順序來控(kong)制(zhi)步(bu)進電(dian)(dian)機(ji)的(de)(de)轉(zhuan)動(dong)。

步進(jin)電(dian)機驅(qu)動器的直流供電(dian)電(dian)源介紹

A.電(dian)(dian)(dian)壓(ya)(ya)的確定：混合式步(bu)進電(dian)(dian)(dian)機驅動器(qi)的供(gong)電(dian)(dian)(dian)電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)壓(ya)(ya)一般是一個較寬的范(fan)圍（比如PMM-BD-5702的供(gong)電(dian)(dian)(dian)電(dian)(dian)(dian)壓(ya)(ya)為(wei)24～36VDC），電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)壓(ya)(ya)通常根據電(dian)(dian)(dian)機的工(gong)作(zuo)轉速和響(xiang)(xiang)應要求來選擇。如果(guo)電(dian)(dian)(dian)機工(gong)作(zuo)轉速較高或響(xiang)(xiang)應要求較快，那么(me)電(dian)(dian)(dian)壓(ya)(ya)取(qu)值也高，但注意電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)壓(ya)(ya)的紋波不能超過驅動器(qi)的較大輸入電(dian)(dian)(dian)壓(ya)(ya)，否則可能損(sun)壞(huai)驅動器(qi)。

B.電(dian)(dian)流(liu)的(de)確定(ding)：供電(dian)(dian)電(dian)(dian)源(yuan)電(dian)(dian)流(liu)一般根據驅動(dong)器的(de)輸出相電(dian)(dian)流(liu)I來(lai)確定(ding)。如果(guo)(guo)采用線(xian)性電(dian)(dian)源(yuan)，電(dian)(dian)源(yuan)電(dian)(dian)流(liu)一般可(ke)取I 的(de)1.1～1.3倍(bei)；如果(guo)(guo)采用開關電(dian)(dian)源(yuan)，電(dian)(dian)源(yuan)電(dian)(dian)流(liu)一般可(ke)取I 的(de)1.5～2.0倍(bei)。