步進電機

步(bu)進電(dian)機(ji)(ji)(ji)是將電(dian)脈(mo)(mo)沖(chong)(chong)(chong)信號轉(zhuan)(zhuan)變(bian)為角位(wei)移或(huo)線位(wei)移的(de)(de)(de)開環控制元件。在(zai)非超載(zai)的(de)(de)(de)情(qing)況下，電(dian)機(ji)(ji)(ji)的(de)(de)(de)轉(zhuan)(zhuan)速(su)、停止的(de)(de)(de)位(wei)置(zhi)只取決于脈(mo)(mo)沖(chong)(chong)(chong)信號的(de)(de)(de)頻率和脈(mo)(mo)沖(chong)(chong)(chong)數，而不受負(fu)載(zai)變(bian)化(hua)的(de)(de)(de)影響，即給電(dian)機(ji)(ji)(ji)加一(yi)個(ge)脈(mo)(mo)沖(chong)(chong)(chong)信號，電(dian)機(ji)(ji)(ji)則轉(zhuan)(zhuan)過一(yi)個(ge)步(bu)距角。這線性(xing)關系的(de)(de)(de)存在(zai)，加上步(bu)進電(dian)機(ji)(ji)(ji)只有周期性(xing)的(de)(de)(de)誤差而無累(lei)積(ji)誤差等特點(dian)。使得(de)在(zai)速(su)度、位(wei)置(zhi)等控制領(ling)域用步(bu)進電(dian)機(ji)(ji)(ji)來控制變(bian)的(de)(de)(de)非常的(de)(de)(de)簡單。

步進電(dian)機VS伺服電(dian)機

性能比較

控(kong)制(zhi)精(jing)度(du)：步(bu)(bu)(bu)(bu)(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)相(xiang)數和拍數越(yue)多(duo)，它的(de)(de)(de)準確(que)度(du)就(jiu)越(yue)高(gao)，伺服(fu)(fu)電(dian)(dian)(dian)(dian)機(ji)(ji)取塊于自(zi)帶的(de)(de)(de)編(bian)(bian)碼器，甘肅EtherCAT步(bu)(bu)(bu)(bu)(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)，編(bian)(bian)碼器的(de)(de)(de)刻度(du)越(yue)多(duo)，精(jing)度(du)就(jiu)越(yue)高(gao)；低(di)(di)(di)(di)頻(pin)(pin)特(te)性：步(bu)(bu)(bu)(bu)(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)在(zai)低(di)(di)(di)(di)速(su)(su)時(shi)易出(chu)現(xian)低(di)(di)(di)(di)頻(pin)(pin)振動現(xian)象(xiang)，EtherCAT步(bu)(bu)(bu)(bu)(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)公司，當(dang)它工作在(zai)低(di)(di)(di)(di)速(su)(su)時(shi)一(yi)般(ban)(ban)采用阻(zu)尼技(ji)術(shu)或(huo)細分技(ji)術(shu)來克服(fu)(fu)低(di)(di)(di)(di)頻(pin)(pin)振動現(xian)象(xiang)，伺服(fu)(fu)電(dian)(dian)(dian)(dian)機(ji)(ji)運轉(zhuan)(zhuan)(zhuan)非(fei)常(chang)平穩，即使在(zai)低(di)(di)(di)(di)速(su)(su)時(shi)也不會出(chu)現(xian)振動現(xian)象(xiang)；矩頻(pin)(pin)特(te)性：步(bu)(bu)(bu)(bu)(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)輸(shu)出(chu)力(li)矩隨轉(zhuan)(zhuan)(zhuan)速(su)(su)的(de)(de)(de)升高(gao)而下降(jiang)，高(gao)速(su)(su)時(shi)會急劇下降(jiang)，伺服(fu)(fu)電(dian)(dian)(dian)(dian)機(ji)(ji)在(zai)額(e)(e)定轉(zhuan)(zhuan)(zhuan)速(su)(su)內為恒力(li)矩輸(shu)出(chu)，在(zai)額(e)(e)定轉(zhuan)(zhuan)(zhuan)速(su)(su)上(shang)(shang)為恒功率輸(shu)出(chu)；過(guo)載能力(li)：步(bu)(bu)(bu)(bu)(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)不具備(bei)過(guo)載能力(li)，伺服(fu)(fu)電(dian)(dian)(dian)(dian)機(ji)(ji)有較(jiao)強(qiang)的(de)(de)(de)過(guo)載能力(li)；運行(xing)性能：步(bu)(bu)(bu)(bu)(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)控(kong)制(zhi)為開環(huan)控(kong)制(zhi)，EtherCAT步(bu)(bu)(bu)(bu)(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)價格(ge)，啟(qi)動頻(pin)(pin)率過(guo)高(gao)或(huo)負(fu)載過(guo)大易丟(diu)(diu)步(bu)(bu)(bu)(bu)(bu)(bu)或(huo)堵(du)轉(zhuan)(zhuan)(zhuan)的(de)(de)(de)現(xian)象(xiang)，停(ting)止(zhi)(zhi)時(shi)轉(zhuan)(zhuan)(zhuan)速(su)(su)過(guo)高(gao)易出(chu)現(xian)過(guo)沖現(xian)象(xiang)，交流(liu)伺服(fu)(fu)驅動系(xi)統(tong)為閉(bi)環(huan)控(kong)制(zhi)，驅動器可直接對電(dian)(dian)(dian)(dian)機(ji)(ji)編(bian)(bian)碼器反(fan)饋(kui)信號進(jin)行(xing)采樣，內部構成(cheng)位置環(huan)和速(su)(su)度(du)環(huan)，一(yi)般(ban)(ban)不會出(chu)現(xian)步(bu)(bu)(bu)(bu)(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)丟(diu)(diu)步(bu)(bu)(bu)(bu)(bu)(bu)或(huo)過(guo)沖的(de)(de)(de)現(xian)象(xiang)，控(kong)制(zhi)性能更為可靠(kao)；速(su)(su)度(du)響應性能：步(bu)(bu)(bu)(bu)(bu)(bu)進(jin)電(dian)(dian)(dian)(dian)機(ji)(ji)從靜(jing)止(zhi)(zhi)加(jia)速(su)(su)到工作轉(zhuan)(zhuan)(zhuan)速(su)(su)需要(yao)上(shang)(shang)百(bai)毫(hao)秒(miao)，而交流(liu)伺服(fu)(fu)系(xi)統(tong)的(de)(de)(de)加(jia)速(su)(su)性能較(jiao)好(hao)，一(yi)般(ban)(ban)只(zhi)需幾毫(hao)秒(miao)，可用于要(yao)求快速(su)(su)啟(qi)停(ting)的(de)(de)(de)控(kong)制(zhi)場合。

如何控制步進電機？

在(zai)(zai)控制(zhi)(zhi)(zhi)電(dian)(dian)(dian)機(ji)時如(ru)(ru)(ru)果需(xu)要(yao)對電(dian)(dian)(dian)機(ji)轉(zhuan)動角度進行(xing)定(ding)(ding)位，步進電(dian)(dian)(dian)機(ji)是(shi)非常合(he)適的(de)選擇。下(xia)面(mian)是(shi)對單極和雙極步進電(dian)(dian)(dian)機(ji)以(yi)及(ji)如(ru)(ru)(ru)何(he)從(cong)微控制(zhi)(zhi)(zhi)器控制(zhi)(zhi)(zhi)它們做詳細的(de)介紹(shao)。閱讀下(xia)面(mian)的(de)這些內容(rong)，可以(yi)先了解(jie)電(dian)(dian)(dian)機(ji)是(shi)如(ru)(ru)(ru)何(he)工(gong)作的(de)、微控制(zhi)(zhi)(zhi)器是(shi)如(ru)(ru)(ru)何(he)工(gong)作的(de)、如(ru)(ru)(ru)何(he)使(shi)用晶體管(guan)來控制(zhi)(zhi)(zhi)大電(dian)(dian)(dian)流負載以(yi)及(ji)直流電(dian)(dian)(dian)動機(ji)是(shi)如(ru)(ru)(ru)何(he)工(gong)作的(de)。正如(ru)(ru)(ru)您在(zai)(zai)電(dian)(dian)(dian)機(ji)簡(jian)介中(zhong)(zhong)所(suo)了解(jie)到的(de)，步進電(dian)(dian)(dian)機(ji)是(shi)由一系(xi)列電(dian)(dian)(dian)磁線圈控制(zhi)(zhi)(zhi)的(de)電(dian)(dian)(dian)機(ji)。中(zhong)(zhong)間軸上(shang)安裝有(you)一系(xi)列磁鐵(tie)，EtherCAT步進電(dian)(dian)(dian)機(ji)價格(ge)，軸周圍的(de)線圈交替地被電(dian)(dian)(dian)流給定(ding)(ding)與否，產生磁場，排斥或吸引軸上(shang)的(de)磁鐵(tie)，導致(zhi)電(dian)(dian)(dian)機(ji)旋轉(zhuan)。