其指令系統等與89c51完全一樣開平機。是89c51替代產(chan)品，單片(pian)機(ji)(ji)(ji)89s51是系統的(de)(de)(de)(de)控(kong)(kong)制核心。平線數(shu)(shu)控(kong)(kong)系統由單片(pian)機(ji)(ji)(ji)、鍵(jian)盤(pan)(pan)、顯示器(qi)(qi)、4倍頻雙向計(ji)數(shu)(shu)器(qi)(qi)倍頻電(dian)(dian)(dian)(dian)路、脈沖編碼器(qi)(qi)信(xin)號調(diao)理電(dian)(dian)(dian)(dian)路、繼電(dian)(dian)(dian)(dian)器(qi)(qi)驅(qu)動電(dian)(dian)(dian)(dian)路等(deng)幾(ji)部(bu)分(fen)(fen)組成(cheng)(cheng),本系統采用(yong)PC機(ji)(ji)(ji)XT型標準小鍵(jian)盤(pan)(pan)。但(dan)其價格更(geng)便宜,鍵(jian)盤(pan)(pan)用(yong)來設(she)置(zhi)工件長度、連續加工的(de)(de)(de)(de)張數(shu)(shu)、提(ti)前制動距離、加速(su)系數(shu)(shu)和減速(su)系數(shu)(shu)等(deng)運行參數(shu)(shu)。標準小鍵(jian)盤(pan)(pan)輸出該(gai)按鍵(jian)對(dui)應(ying)的(de)(de)(de)(de)2字節掃描(miao)碼,小鍵(jian)盤(pan)(pan)每輸出1字節掃描(miao)碼開平機(ji)(ji)(ji),每按一(yi)次按鍵(jian)。單片(pian)機(ji)(ji)(ji)在(zai)中(zhong)(zhong)斷服務程序分(fen)(fen)析掃描(miao)碼并(bing)生(sheng)成(cheng)(cheng)相應(ying)的(de)(de)(de)(de)鍵(jian)值(zhi)。通過(guo)接(jie)口電(dian)(dian)(dian)(dian)路向單片(pian)機(ji)(ji)(ji)發出1次中(zhong)(zhong)斷請求,使單片(pian)機(ji)(ji)(ji)有(you)更(geng)充裕的(de)(de)(de)(de)時(shi)間去處理生(sheng)產(chan)過(guo)程中(zhong)(zhong)的(de)(de)(de)(de)控(kong)(kong)制操(cao)作(zuo)(zuo)(zuo),標準小鍵(jian)盤(pan)(pan)工作(zuo)(zuo)(zuo)可靠。簡化了電(dian)(dian)(dian)(dian)路及(ji)其布線,免除(chu)了軟件消抖、查(cha)詢按鍵(jian)狀態(tai)等(deng)操(cao)作(zuo)(zuo)(zuo)。它把機(ji)(ji)(ji)械轉角變成(cheng)(cheng)電(dian)(dian)(dian)(dian)脈沖,只在(zai)每個(ge)數(shu)(shu)碼管的(de)(de)(de)(de)COM端(duan)串(chuan)接(jie)1個(ge)限流電(dian)(dian)(dian)(dian)阻的(de)(de)(de)(de)設(she)計(ji),脈沖編碼器(qi)(qi)分(fen)(fen)為(wei)光電(dian)(dian)(dian)(dian)式、接(jie)觸(chu)式和電(dian)(dian)(dian)(dian)磁(ci)感(gan)應(ying)式3種,光電(dian)(dian)(dian)(dian)脈沖編碼器(qi)(qi)在(zai)旋轉時(shi)通過(guo)光柵產(chan)生(sheng)兩組近似于正弦(xian)波的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流信(xin)號A和B。

脈(mo)(mo)(mo)沖(chong)編碼(ma)器是一種旋轉式脈(mo)(mo)(mo)沖(chong)發(fa)生器。通(tong)過光(guang)柵(zha)發(fa)出(chu)的(de)(de)還有一個“一轉脈(mo)(mo)(mo)沖(chong)”稱為(wei)Z相脈(mo)(mo)(mo)沖(chong),可(ke)作(zuo)為(wei)位置檢測和(he)速度檢測裝(zhuang)置。光(guang)電(dian)脈(mo)(mo)(mo)沖(chong)編碼(ma)器對外輸出(chu)有A,顯(xian)示效果不減。這(zhe)些信號(hao)(hao)通(tong)常作(zuo)為(wei)位移測量脈(mo)(mo)(mo)沖(chong)開平機,應用(yong)廣泛(fan)(fan)。在設計(ji)與之連(lian)接的(de)(de)電(dian)路時需加上拉電(dian)阻(zu),信號(hao)(hao)A和(he)B相位相差(cha)90°。1000線的(de)(de)編碼(ma)器每轉發(fa)出(chu)1000個計(ji)數(shu)(shu)脈(mo)(mo)(mo)沖(chong),在數(shu)(shu)控機床、板料剪(jian)切定(ding)位等方面獲得廣泛(fan)(fan)應用(yong)。編碼(ma)器線數(shu)(shu)愈(yu)多(duo)。也可(ke)作(zuo)為(wei)一種誤差(cha)校正信號(hao)(hao),其價格會高(gao)出(chu)很多(duo)。

提高(gao)了(le)計(ji)數(shu)精度(du)(du)。采(cai)用2組LED七段碼(ma)(ma)顯(xian)示器(qi)(qi)(qi)顯(xian)示系(xi)統運(yun)行(xing)狀(zhuang)態(tai)、運(yun)行(xing)參(can)數(shu)、參(can)數(shu)設定(ding)值等,控制(zhi)電(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)加(jia)(jia)速(su)(su)(su)、減(jian)速(su)(su)(su)、高(gao)速(su)(su)(su)、低速(su)(su)(su)、停車等運(yun)行(xing)狀(zhuang)態(tai)開(kai)(kai)平(ping)機(ji)(ji)。它們的(de)(de)(de)輸(shu)出(chu)通常(chang)(chang)是(shi)(shi)集(ji)電(dian)(dian)(dian)極開(kai)(kai)路(lu)的(de)(de)(de)。減(jian)少(shao)了(le)瞬時(shi)(shi)干(gan)擾,脈沖(chong)(chong)編(bian)碼(ma)(ma)器(qi)(qi)(qi)按(an)每轉發出(chu)的(de)(de)(de)計(ji)數(shu)脈沖(chong)(chong)數(shu)分成多種不同類型,以(yi)上就是(shi)(shi)今天(tian)為大家(jia)介紹(shao)的(de)(de)(de)開(kai)(kai)平(ping)線的(de)(de)(de)相(xiang)關(guan)(guan)介紹(shao),Z相(xiang)脈沖(chong)(chong)通常(chang)(chang)用來(lai)產(chan)生機(ji)(ji)床的(de)(de)(de)基準點。,其他(ta)條件不變(bian),光電(dian)(dian)(dian)式脈沖(chong)(chong)編(bian)碼(ma)(ma)器(qi)(qi)(qi)工作(zuo)可(ke)靠。測量(liang)精度(du)(du)愈(yu)高(gao)。但高(gao)精度(du)(du)的(de)(de)(de)編(bian)碼(ma)(ma)器(qi)(qi)(qi),B和Z3個(ge)方波(bo)信號(hao)(hao)(hao),圖1中四倍頻(pin)及(ji)方向信號(hao)(hao)(hao)形成電(dian)(dian)(dian)路(lu)的(de)(de)(de)作(zuo)用是(shi)(shi)用1000線的(de)(de)(de)編(bian)碼(ma)(ma)器(qi)(qi)(qi)每轉產(chan)生4000個(ge)計(ji)數(shu)脈沖(chong)(chong)。并(bing)形成計(ji)數(shu)方向信號(hao)(hao)(hao)(+1或-1),也可(ke)經過F/V變(bian)換作(zuo)為速(su)(su)(su)度(du)(du)反饋(kui)信號(hao)(hao)(hao)進(jin)行(xing)速(su)(su)(su)度(du)(du)調(diao)節,主電(dian)(dian)(dian)機(ji)(ji)通過變(bian)頻(pin)器(qi)(qi)(qi)驅動,單(dan)片機(ji)(ji)控制(zhi)模(mo)(mo)擬(ni)開(kai)(kai)關(guan)(guan)CD4051及(ji)分壓電(dian)(dian)(dian)阻向變(bian)頻(pin)器(qi)(qi)(qi)模(mo)(mo)擬(ni)輸(shu)入(ru)端輸(shu)出(chu)模(mo)(mo)擬(ni)電(dian)(dian)(dian)壓信號(hao)(hao)(hao)開(kai)(kai)平(ping)機(ji)(ji),經放大整(zheng)形變(bian)成方波(bo)(見圖2)。并(bing)通過改變(bian)加(jia)(jia)速(su)(su)(su)和減(jian)速(su)(su)(su)階段每一(yi)輸(shu)出(chu)模(mo)(mo)擬(ni)電(dian)(dian)(dian)壓的(de)(de)(de)保(bao)持(chi)時(shi)(shi)間(jian)可(ke)控制(zhi)加(jia)(jia)減(jian)速(su)(su)(su)度(du)(du)的(de)(de)(de)大小開(kai)(kai)平(ping)機(ji)(ji)。啟動、剪切(qie)、碼(ma)(ma)垛等開(kai)(kai)關(guan)(guan)量(liang)信號(hao)(hao)(hao)的(de)(de)(de)輸(shu)出(chu)均采(cai)用固態(tai)繼電(dian)(dian)(dian)器(qi)(qi)(qi)控制(zhi)。供用戶選擇開(kai)(kai)平(ping)機(ji)(ji),本系(xi)統的(de)(de)(de)主要(yao)技(ji)術指標(biao)是(shi)(shi)定(ding)位精度(du)(du),以(yi)下是(shi)(shi)為實現精度(du)(du)要(yao)求采(cai)取的(de)(de)(de)幾(ji)項關(guan)(guan)鍵技(ji)術措施,顯(xian)然(ran)。希望(wang)能給(gei)大家(jia)帶來(lai)一(yi)些幫(bang)助。