意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動(dong)(dong)裝置不同。比例閥(fa)(fa)的驅(qu)動(dong)(dong)裝置是比例電磁鐵;伺服閥(fa)(fa)的驅(qu)動(dong)(dong)裝置是力(li)馬達或力(li)矩(ju)馬達; 2.性能參數不(bu)(bu)同(tong)。滯環(huan)、中位死區、頻寬、過(guo)濾精(jing)度等特性不(bu)(bu)同(tong),因此應(ying)用場合不(bu)(bu)同(tong),伺(si)服閥(fa)和伺(si)服比例(li)閥(fa)主(zhu)要應(ying)用在閉環(huan)控(kong)制系(xi)統,其它(ta)結構的比例(li)閥(fa)主(zhu)要應(ying)用在開(kai)環(huan)控(kong)系(xi)統及(ji)閉環(huan)速度控(kong)制系(xi)統; - 伺(si)服閥中位沒有(you)死區(qu),比例閥有(you)中位死區(qu);
- 伺服閥(fa)的頻響(xiang)(響(xiang)應頻率)更高(gao),可(ke)以(yi)高(gao)達200Hz左右,比例閥(fa)一般zui高(gao)幾十Hz;
- 伺服閥對液壓(ya)油液的要求更高,需(xu)要精過(guo)濾(lv)才(cai)行,否則(ze)容易堵塞,比(bi)例閥要求低(di)一些;
3.閥(fa)(fa)芯(xin)結構(gou)及加(jia)工精(jing)度不同。比(bi)例閥(fa)(fa)采(cai)用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)體結構(gou),閥(fa)(fa)體兼作閥(fa)(fa)套。伺服閥(fa)(fa)和伺服比(bi)例閥(fa)(fa)采(cai)用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)套的結構(gou)。 4.中位(wei)機(ji)(ji)能種類不(bu)同。比例換向(xiang)(xiang)閥(fa)(fa)具有(you)與(yu)普通換向(xiang)(xiang)閥(fa)(fa)相似的(de)中位(wei)機(ji)(ji)能,而伺服閥(fa)(fa)中位(wei)機(ji)(ji)能只有(you)O型(Rexroth產品的(de)E型)。 5.閥的額定(ding)壓降(jiang)不(bu)同。 電(dian)氣(qi)(qi)比(bi)(bi)例(li)閥自動(dong)控(kong)制(zhi)(zhi)可分(fen)成(cheng)(cheng)斷續(xu)控(kong)制(zhi)(zhi)和連(lian)續(xu)控(kong)制(zhi)(zhi)。斷續(xu)控(kong)制(zhi)(zhi)即開(kai)關控(kong)制(zhi)(zhi)。氣(qi)(qi)動(dong)控(kong)制(zhi)(zhi)系(xi)(xi)(xi)統(tong)中使用(yong)動(dong)作頻率(lv)較低的(de)開(kai)關式(shi)(ON-OFF)的(de)換向閥來控(kong)制(zhi)(zhi)氣(qi)(qi)路的(de)通斷。靠減壓(ya)閥來調節(jie)所需要(yao)的(de)壓(ya)力,靠節(jie)流閥來調節(jie)所需要(yao)的(de)流量(liang)(liang)。這(zhe)種傳統(tong)的(de)氣(qi)(qi)動(dong)控(kong)制(zhi)(zhi)系(xi)(xi)(xi)統(tong)要(yao)想要(yao)有(you)多(duo)個(ge)輸出力和多(duo)個(ge)運動(dong)速度,就需要(yao)多(duo)個(ge)減壓(ya)閥、節(jie)流閥及換向閥。這(zhe)樣,不僅元(yuan)件(jian)需要(yao)多(duo),成(cheng)(cheng)本高,構(gou)成(cheng)(cheng)系(xi)(xi)(xi)統(tong)復(fu)雜,且許(xu)多(duo)元(yuan)件(jian)都(dou)需要(yao)預先進(jin)行人工調節(jie)。電(dian)氣(qi)(qi)比(bi)(bi)例(li)閥控(kong)制(zhi)(zhi)屬于連(lian)續(xu)控(kong)制(zhi)(zhi),其(qi)特點是輸出量(liang)(liang)隨輸入(ru)量(liang)(liang)的(de)變(bian)化而(er)變(bian)化,輸出量(liang)(liang)與(yu)輸入(ru)量(liang)(liang)之(zhi)間存(cun)在一定的(de)比(bi)(bi)例(li)關系(xi)(xi)(xi)。比(bi)(bi)例(li)控(kong)制(zhi)(zhi)有(you)開(kai)環控(kong)制(zhi)(zhi)和閉環控(kong)制(zhi)(zhi)之(zhi)分(fen)。 意大利ATOS比例閥型號表: LIMZA-A-1/180/M 20 LIMZA-A-3/180/M 40 LIMZO-A-3/210 LIMZO-A-4/210 LIMZO-A-5/315/P 30 LIMZO-AE-4/315 10 LIMZO-TER-4/210 50 LIMZO-TER-4/210/I LIQV-2 20 LIQV-2/K LIQZO-A-252S4 LIQZO-L-252L4 50 LIQZO-L-322L4 50 LIQZO-LE-402L4 50 LIQZO-LE-502L4 50 LIQZO-LE-632L4 51 LIQZO-T-252L4 LIQZO-T-252L4 50 /PE LIQZO-T-322L4 50 LIQZO-T-402L4 LIQZO-TE-322L4 50 LIRA-1/100 20 LIRA-1/210 20 LIRA-2/210/V 20 LIRA-3/100 LIRA-4/210/V 11 LIRZO-A-1/210 QVHZO-A-06/12 20 QVHZO-A-06/18 QVHZO-A-06/3 QVHZO-A-06/36 QVHZO-A-06/45 QVHZO-AE-06/3/I 10 QVHZO-AE-06/45/I QVHZO-T-06/12 31 QVHZO-T-06/3 31/WG QVHZO-TE-06/18 40 QVHZO-TE-06/18/I 40 QVHZO-TE-06/3 40 QVKMZOR-A-10/90/210/18 QVKZOR-A-10/65 QVKZOR-AE-10/90 10 QVKZOR-AES-BC-10/65 10? |