22A-B8P0N104
22A-B8P0N104矩頻特性不同
步進(jìn)電機(jī):輸出力矩隨轉(zhuǎn)速升高而下降,且在較高轉(zhuǎn)速時(shí)會(huì)急劇下降,所以其高工作轉(zhuǎn)速一般在 300~600r/min。
伺服電機(jī):為恒力矩輸出,即在其額定轉(zhuǎn)速(一般為2000或3000r/min)以內(nèi),輸出額定轉(zhuǎn)矩,在額定轉(zhuǎn)速以上為恒功率輸出。
過載能力不同
步進(jìn)電機(jī):一般不具有過載能力。
伺服電機(jī):具有較強(qiáng)的過載能力。
如何正確選擇伺服電機(jī)和步進(jìn)電機(jī)
交流伺服系統(tǒng)在許多性能方面都優(yōu)于步進(jìn)電機(jī)。 但在一些要求不高的場(chǎng)合也經(jīng)常用步進(jìn)電機(jī)來做執(zhí)行電動(dòng)機(jī)。 所以,在控制系統(tǒng)的設(shè)計(jì)過程中要綜合考慮控制要求、成本等多方面的因素,選用適當(dāng)?shù)目刂齐姍C(jī)。
主要視具體應(yīng)用情況而定,簡單地說要確定:負(fù)載的性質(zhì)(如水平還是垂直負(fù)載等),轉(zhuǎn)矩、慣量、轉(zhuǎn)速、精度、加減速等要求,上位控制要求(如對(duì)端口界面和通訊方面的要求),主要控制方式是位置、轉(zhuǎn)矩還是速度方式。 供電電源是直流還是交流電源,或電池供電,電壓范圍。 據(jù)此以確定電機(jī)和配用驅(qū)動(dòng)器或控制器的型號(hào)。
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