?伺服系統(tǒng)的發(fā)展緊密地與伺服電動(dòng)機(jī)的不同發(fā)展階段相聯(lián)系，伺服電動(dòng)機(jī)至今已有五十多年的發(fā)展歷史，經(jīng)歷了三個(gè)主要發(fā)展階段：

? ?第一個(gè)發(fā)展階段（20世紀(jì)60年代以前），此階段是以步進(jìn)電動(dòng)機(jī)驅(qū)動(dòng)的液壓伺服馬達(dá)或以功率步進(jìn)電動(dòng)機(jī)直接驅(qū)動(dòng)為中心的時(shí)代，伺服系統(tǒng)的位置控制為開環(huán)系統(tǒng)。

聯(lián)?系?人：李素云????????QQ：1587052687?,806403614?????
?聯(lián)系電話：0592-5165501??????
聯(lián)系郵箱：1587052687@qq.com??????手機(jī):18965423501??

? ?第二個(gè)發(fā)展階段（20世紀(jì)60－70年代），這一階段是直流伺服電動(dòng)機(jī)的誕生和全盛發(fā)展的時(shí)代，由于直流電動(dòng)機(jī)具有優(yōu)良的調(diào)速性能，很多高性能驅(qū)動(dòng)裝置采用了直流電動(dòng)機(jī)，伺服系統(tǒng)的位置控制也由開環(huán)系統(tǒng)發(fā)展成為閉環(huán)系統(tǒng)。在數(shù)控機(jī)床的應(yīng)用領(lǐng)域，永磁式直流電動(dòng)機(jī)占統(tǒng)治地位，其控制電路簡(jiǎn)單，無勵(lì)磁損耗，低速性能好。

? ?第三個(gè)發(fā)展階段（20世紀(jì)80年代至今），這一階段是以機(jī)電一體化時(shí)代作為背景的，由于伺服電動(dòng)機(jī)結(jié)構(gòu)及其永磁材料、控制技術(shù)的突破性進(jìn)展，出現(xiàn)了無刷直流伺服電動(dòng)機(jī)（方波驅(qū)動(dòng)），交流伺服電動(dòng)機(jī)（正弦波驅(qū)動(dòng)）等種種新型電動(dòng)機(jī)。

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