步進電機為何一定(ding)要搭(da)配驅(qu)動器(qi)呢？      

步(bu)進(jin)(jin)電機驅(qu)動器是驅(qu)動步(bu)進(jin)(jin)電機運行的(de)(de)功率(lv)放大(da)器，它(ta)能(neng)接收控制(zhi)器(PLC/單片機等)發送來(lai)的(de)(de)控制(zhi)信號并控制(zhi)步(bu)進(jin)(jin)電機轉過相應的(de)(de)角(jiao)度/步(bu)數。        

步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)很常見的(de)(de)(de)控(kong)制(zhi)信(xin)(xin)號(hao)(hao)(hao)是(shi)(shi)脈(mo)(mo)沖(chong)信(xin)(xin)號(hao)(hao)(hao)，步(bu)(bu)進(jin)(jin)驅(qu)(qu)動(dong)器(qi)(qi)接收到一(yi)(yi)個(ge)有效脈(mo)(mo)沖(chong)就控(kong)制(zhi)步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)運行(xing)(xing)一(yi)(yi)步(bu)(bu)。具有細分(fen)(fen)(fen)功(gong)(gong)能(neng)(neng)的(de)(de)(de)步(bu)(bu)進(jin)(jin)驅(qu)(qu)動(dong)器(qi)(qi)可(ke)以(yi)改變步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)的(de)(de)(de)固有步(bu)(bu)距(ju)角，達到更大(da)的(de)(de)(de)控(kong)制(zhi)精度、降低振(zhen)動(dong)及(ji)提高輸(shu)出(chu)轉矩;除了(le)脈(mo)(mo)沖(chong)信(xin)(xin)號(hao)(hao)(hao)，具有總(zong)線通(tong)(tong)信(xin)(xin)功(gong)(gong)能(neng)(neng)的(de)(de)(de)步(bu)(bu)進(jin)(jin)驅(qu)(qu)動(dong)器(qi)(qi)還(huan)能(neng)(neng)接收總(zong)線信(xin)(xin)號(hao)(hao)(hao)控(kong)制(zhi)步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)進(jin)(jin)行(xing)(xing)相(xiang)應(ying)的(de)(de)(de)動(dong)作。      步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)驅(qu)(qu)動(dong)器(qi)(qi)可(ke)分(fen)(fen)(fen)為兩部(bu)(bu)分(fen)(fen)(fen)一(yi)(yi)部(bu)(bu)分(fen)(fen)(fen)是(shi)(shi)環形分(fen)(fen)(fen)配(pei)器(qi)(qi)，另一(yi)(yi)部(bu)(bu)分(fen)(fen)(fen)是(shi)(shi)功(gong)(gong)率(lv)放(fang)大(da)器(qi)(qi)。      環形分(fen)(fen)(fen)配(pei)器(qi)(qi)：要(yao)(yao)(yao)是(shi)(shi)接收3種(zhong)信(xin)(xin)號(hao)(hao)(hao)分(fen)(fen)(fen)別為：脈(mo)(mo)沖(chong)信(xin)(xin)號(hao)(hao)(hao)，方向(xiang)信(xin)(xin)號(hao)(hao)(hao)，脫機(ji)信(xin)(xin)號(hao)(hao)(hao)。然(ran)后(hou)(hou)再對脈(mo)(mo)沖(chong)信(xin)(xin)號(hao)(hao)(hao)進(jin)(jin)行(xing)(xing)分(fen)(fen)(fen)配(pei)，去(qu)控(kong)制(zhi)功(gong)(gong)率(lv)放(fang)大(da)器(qi)(qi)相(xiang)應(ying)的(de)(de)(de)晶體(ti)管(guan)導(dao)通(tong)(tong)，閉環步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)公司，然(ran)后(hou)(hou)使步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)的(de)(de)(de)線圈得(de)(de)電(dian)(dian)(dian)。從這里我們(men)可(ke)以(yi)看(kan)出(chu)，步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)要(yao)(yao)(yao)運轉那么必(bi)須要(yao)(yao)(yao)輸(shu)入脈(mo)(mo)沖(chong)，如果沒有脈(mo)(mo)沖(chong)，步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)是(shi)(shi)不動(dong)的(de)(de)(de)，所以(yi)我們(men)需要(yao)(yao)(yao)一(yi)(yi)個(ge)驅(qu)(qu)動(dong)器(qi)(qi)來給(gei)步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)的(de)(de)(de)各(ge)項繞組依次通(tong)(tong)電(dian)(dian)(dian)。      方向(xiang)信(xin)(xin)號(hao)(hao)(hao)：要(yao)(yao)(yao)控(kong)制(zhi)AB通(tong)(tong)電(dian)(dian)(dian)的(de)(de)(de)相(xiang)序(xu)，A-B順時針，B-A逆(ni)時針;      脫機(ji)信(xin)(xin)號(hao)(hao)(hao)：步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)機(ji)停止時，AB線圈有一(yi)(yi)相(xiang)得(de)(de)電(dian)(dian)(dian)，得(de)(de)電(dian)(dian)(dian)的(de)(de)(de)功(gong)(gong)能(neng)(neng)使轉子(zi)(zi)鎖住(zhu)，使轉子(zi)(zi)不能(neng)(neng)動(dong)，需要(yao)(yao)(yao)收去(qu)撥(bo)動(dong)轉子(zi)(zi)的(de)(de)(de)時候，需要(yao)(yao)(yao)給(gei)脫機(ji)信(xin)(xin)號(hao)(hao)(hao)，使AB相(xiang)繞組完全斷電(dian)(dian)(dian)，轉子(zi)(zi)處(chu)于自由轉動(dong)狀(zhuang)態。

步進電機的保持轉矩

保(bao)持轉(zhuan)矩(ju)(ju)(ju)（HOLDING TORQUE）是(shi)指步(bu)(bu)進(jin)(jin)電機(ji)通(tong)電但(dan)沒有轉(zhuan)動時，定(ding)子鎖(suo)住轉(zhuan)子的力(li)(li)矩(ju)(ju)(ju)。它是(shi)步(bu)(bu)進(jin)(jin)電機(ji)很(hen)重(zhong)要(yao)的參數(shu)之一(yi)(yi)，通(tong)常步(bu)(bu)進(jin)(jin)電機(ji)在低速時的力(li)(li)矩(ju)(ju)(ju)接近保(bao)持轉(zhuan)矩(ju)(ju)(ju)。由于步(bu)(bu)進(jin)(jin)電機(ji)的輸(shu)(shu)出力(li)(li)矩(ju)(ju)(ju)隨速度(du)的增(zeng)大而不斷衰減，輸(shu)(shu)出功率也隨速度(du)的增(zeng)大而變化，所以保(bao)持轉(zhuan)矩(ju)(ju)(ju)就成(cheng)為了衡量步(bu)(bu)進(jin)(jin)電機(ji)很(hen)重(zhong)要(yao)的參數(shu)之一(yi)(yi)。比如，當人們說(shuo)2N.m的步(bu)(bu)進(jin)(jin)電機(ji)，在沒有特殊(shu)說(shuo)明(ming)的情況(kuang)下(xia)是(shi)指保(bao)持轉(zhuan)矩(ju)(ju)(ju)為2N.m的步(bu)(bu)進(jin)(jin)電機(ji)。

步進(jin)電機(ji)，步進(jin)驅(qu)動(dong)器和(he)PLC之間的(de)連接  

步進(jin)驅(qu)動(dong)器(qi)首先要(yao)外(wai)接直(zhi)流(liu)電源(yuan)24~72V，一端要(yao)連步進(jin)電機(ji)(ji)(ji)，吉林(lin)閉環(huan)步進(jin)電機(ji)(ji)(ji)，另一端作(zuo)輸入(ru)信(xin)(xin)(xin)號也就是(shi)控制信(xin)(xin)(xin)號，步進(jin)電機(ji)(ji)(ji)接受外(wai)部信(xin)(xin)(xin)號的(de)(de)結(jie)構(gou)是(shi)采用光電隔離的(de)(de)，比如：PLC的(de)(de)脈沖信(xin)(xin)(xin)號送到驅(qu)動(dong)器(qi)內(nei)部，閉環(huan)步進(jin)電機(ji)(ji)(ji)價(jia)格(ge)，我們要(yao)使(shi)PLC產生脈沖只需(xu)要(yao)讓(rang)Y0不斷的(de)(de)接通與截止就可以產生。      PLC發送信(xin)(xin)(xin)號給步進(jin)電機(ji)(ji)(ji)驅(qu)動(dong)器(qi)，閉環(huan)步進(jin)電機(ji)(ji)(ji)公司，驅(qu)動(dong)器(qi)控制步進(jin)電機(ji)(ji)(ji)運行，就組成了設(she)備的(de)(de)傳(chuan)動(dong)結(jie)構(gou)，有(you)些高精的(de)(de)設(she)備，需(xu)要(yao)電機(ji)(ji)(ji)完成更復雜的(de)(de)傳(chuan)動(dong)動(dong)作(zuo)，會(hui)采購具有(you)總線總線功能(neng)比如ethercat等的(de)(de)步進(jin)電機(ji)(ji)(ji)驅(qu)動(dong)器(qi)。