（1）帶鋼在粗軋機可逆軋制過程中出現板形楔形、鐮刀彎等情況，需調整單側輥縫，但離合器為齒式連接，離合器嚙合經常不到位，影響軋制節奏。目前，粗軋機單側調整輥縫只能在加熱爐來料，粗軋機軋制第一道次之前完成，且需要人為確認壓下離合器是否嚙合到位，無法實現根據板形隨時調節和控制輥縫，影響板形質量。
（2）粗軋機軋輥輥縫實際位置與設定值偏差超出范圍（＞2mm），造成壓下系統保護，無法擺位。
（3）兩臺壓下電機雖然型號相同，但電機在制造和安裝過程中存在差異，且兩臺防爆電機通過離合器同軸連接，在離合器兩側產生轉矩，經常損壞離合器。

    改造(zao)措施如下(xia)1.粗軋(ya)(ya)機(ji)操(cao)(cao)作(zuo)(zuo)(zuo)側(ce)(ce)和傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)側(ce)(ce)輥(gun)(gun)縫(feng)(feng)APC獨立控(kong)制(zhi)(zhi)(zhi)(zhi)APC（位(wei)(wei)置(zhi)(zhi)(zhi)(zhi)控(kong)制(zhi)(zhi)(zhi)(zhi)）是在指定(ding)(ding)(ding)(ding)(ding)(ding)時間(jian)內(nei)將被(bei)控(kong)對象的(de)位(wei)(wei)置(zhi)(zhi)(zhi)(zhi)自(zi)動(dong)(dong)(dong)控(kong)制(zhi)(zhi)(zhi)(zhi)到預先給(gei)(gei)定(ding)(ding)(ding)(ding)(ding)(ding)的(de)目(mu)(mu)標(biao)值(zhi)(zhi)(zhi)(zhi)(zhi)上，使控(kong)制(zhi)(zhi)(zhi)(zhi)后的(de)位(wei)(wei)置(zhi)(zhi)(zhi)(zhi)與目(mu)(mu)標(biao)位(wei)(wei)置(zhi)(zhi)(zhi)(zhi)之(zhi)差(cha)(cha)(cha)保持在允許偏差(cha)(cha)(cha)范圍內(nei)。原粗軋(ya)(ya)機(ji)壓(ya)下(xia)系(xi)統的(de)壓(ya)下(xia)絲杠裝(zhuang)設(she)位(wei)(wei)移傳(chuan)(chuan)(chuan)感器檢測軋(ya)(ya)輥(gun)(gun)輥(gun)(gun)縫(feng)(feng)實際(ji)(ji)位(wei)(wei)置(zhi)(zhi)(zhi)(zhi)，輥(gun)(gun)縫(feng)(feng)設(she)定(ding)(ding)(ding)(ding)(ding)(ding)值(zhi)(zhi)(zhi)(zhi)(zhi)S設(she)定(ding)(ding)(ding)(ding)(ding)(ding)值(zhi)(zhi)(zhi)(zhi)(zhi)與傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)側(ce)(ce)、操(cao)(cao)作(zuo)(zuo)(zuo)側(ce)(ce)兩(liang)側(ce)(ce)輥(gun)(gun)縫(feng)(feng)實際(ji)(ji)位(wei)(wei)置(zhi)(zhi)(zhi)(zhi)的(de)平均值(zhi)(zhi)(zhi)(zhi)(zhi)S相減，得出(chu)ΔS輥(gun)(gun)縫(feng)(feng)偏差(cha)(cha)(cha)值(zhi)(zhi)(zhi)(zhi)(zhi)。根(gen)據(ju)ΔS輥(gun)(gun)縫(feng)(feng)偏差(cha)(cha)(cha)值(zhi)(zhi)(zhi)(zhi)(zhi)絕(jue)對值(zhi)(zhi)(zhi)(zhi)(zhi)的(de)變(bian)化動(dong)(dong)(dong)態控(kong)制(zhi)(zhi)(zhi)(zhi)壓(ya)下(xia)速(su)度給(gei)(gei)定(ding)(ding)(ding)(ding)(ding)(ding)信(xin)號(hao)，實現輥(gun)(gun)縫(feng)(feng)控(kong)制(zhi)(zhi)(zhi)(zhi)。改造(zao)開發粗軋(ya)(ya)機(ji)操(cao)(cao)作(zuo)(zuo)(zuo)側(ce)(ce)和傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)側(ce)(ce)輥(gun)(gun)縫(feng)(feng)兩(liang)個APC通(tong)道(dao)獨立工作(zuo)(zuo)(zuo)，并以各自(zi)的(de)輥(gun)(gun)縫(feng)(feng)設(she)定(ding)(ding)(ding)(ding)(ding)(ding)值(zhi)(zhi)(zhi)(zhi)(zhi)作(zuo)(zuo)(zuo)為控(kong)制(zhi)(zhi)(zhi)(zhi)目(mu)(mu)標(biao)，PLC通(tong)過(guo)采集傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)側(ce)(ce)、操(cao)(cao)作(zuo)(zuo)(zuo)側(ce)(ce)輥(gun)(gun)縫(feng)(feng)實際(ji)(ji)位(wei)(wei)置(zhi)(zhi)(zhi)(zhi)，將各自(zi)設(she)定(ding)(ding)(ding)(ding)(ding)(ding)的(de)位(wei)(wei)置(zhi)(zhi)(zhi)(zhi)目(mu)(mu)標(biao)值(zhi)(zhi)(zhi)(zhi)(zhi)與實際(ji)(ji)值(zhi)(zhi)(zhi)(zhi)(zhi)相減，得出(chu)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)側(ce)(ce)ΔS傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)側(ce)(ce)輥(gun)(gun)縫(feng)(feng)偏差(cha)(cha)(cha)值(zhi)(zhi)(zhi)(zhi)(zhi)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)側(ce)(ce)設(she)定(ding)(ding)(ding)(ding)(ding)(ding)值(zhi)(zhi)(zhi)(zhi)(zhi)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)側(ce)(ce)實際(ji)(ji)值(zhi)(zhi)(zhi)(zhi)(zhi)，操(cao)(cao)作(zuo)(zuo)(zuo)側(ce)(ce)操(cao)(cao)作(zuo)(zuo)(zuo)側(ce)(ce)輥(gun)(gun)縫(feng)(feng)偏差(cha)(cha)(cha)值(zhi)(zhi)(zhi)(zhi)(zhi)操(cao)(cao)作(zuo)(zuo)(zuo)側(ce)(ce)設(she)定(ding)(ding)(ding)(ding)(ding)(ding)值(zhi)(zhi)(zhi)(zhi)(zhi)操(cao)(cao)作(zuo)(zuo)(zuo)側(ce)(ce)實際(ji)(ji)值(zhi)(zhi)(zhi)(zhi)(zhi)。壓(ya)下(xia)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)裝(zhuang)置(zhi)(zhi)(zhi)(zhi)在原有雙閉環(huan)(huan)速(su)度調(diao)節(jie)系(xi)統的(de)速(su)度環(huan)(huan)之(zhi)外加入(ru)1個位(wei)(wei)置(zhi)(zhi)(zhi)(zhi)環(huan)(huan)，根(gen)據(ju)下(xia)列(lie)公式，分別計算(suan)壓(ya)下(xia)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)裝(zhuang)置(zhi)(zhi)(zhi)(zhi)速(su)度給(gei)(gei)定(ding)(ding)(ding)(ding)(ding)(ding)，實現輥(gun)(gun)縫(feng)(feng)控(kong)制(zhi)(zhi)(zhi)(zhi)。