工(gong)程師經多年維修經驗(yan)得(de)出(chu)引發(fa)此(ci)類故(gu)(gu)障(zhang)的常見(jian)原因有(you)：①脈(mo)沖編碼(ma)器(qi)(qi)(qi)出(chu)現(xian)故(gu)(gu)障(zhang)。此(ci)時(shi)應檢(jian)(jian)查伺服系統是否(fou)穩(wen)定，電(dian)(dian)(dian)路板(ban)維修檢(jian)(jian)測(ce)(ce)電(dian)(dian)(dian)流是否(fou)穩(wen)定，同時(shi)，速(su)(su)度檢(jian)(jian)測(ce)(ce)單元(yuan)反饋線端子上的電(dian)(dian)(dian)壓(ya)(ya)是否(fou)在(zai)某幾(ji)點電(dian)(dian)(dian)壓(ya)(ya)下(xia)降，如有(you)下(xia)降表明脈(mo)沖編碼(ma)器(qi)(qi)(qi)不(bu)(bu)良，更(geng)換(huan)編碼(ma)器(qi)(qi)(qi)；②脈(mo)沖編碼(ma)器(qi)(qi)(qi)十(shi)字聯軸(zhou)節(jie)可能損壞，導(dao)致軸(zhou)轉速(su)(su)與檢(jian)(jian)測(ce)(ce)到的速(su)(su)度不(bu)(bu)同步，更(geng)換(huan)聯軸(zhou)節(jie)；③測(ce)(ce)速(su)(su)發(fa)電(dian)(dian)(dian)機(ji)出(chu)現(xian)故(gu)(gu)障(zhang)。修復，更(geng)換(huan)測(ce)(ce)速(su)(su)機(ji)。維修實踐中，測(ce)(ce)速(su)(su)機(ji)電(dian)(dian)(dian)刷(shua)磨損、卡阻故(gu)(gu)障(zhang)較多，此(ci)時(shi)應拆(chai)下(xia)測(ce)(ce)速(su)(su)機(ji)的電(dian)(dian)(dian)刷(shua)，用綱砂紙打(da)磨幾(ji)下(xia)，同時(shi)清(qing)掃換(huan)向(xiang)器(qi)(qi)(qi)的污垢，再重(zhong)新裝好。