意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動裝置(zhi)不(bu)同。比例閥的(de)驅(qu)動裝置(zhi)是(shi)比例電磁(ci)鐵;伺服閥的(de)驅(qu)動裝置(zhi)是(shi)力馬(ma)達或(huo)力矩(ju)馬(ma)達; 2.性能參數不(bu)同(tong)。滯環(huan)、中位死區、頻(pin)寬、過濾精(jing)度等(deng)特性不(bu)同(tong),因此(ci)應用(yong)場合不(bu)同(tong),伺服(fu)閥和伺服(fu)比(bi)例閥主要應用(yong)在(zai)閉環(huan)控制系統(tong),其它(ta)結構的(de)比(bi)例閥主要應用(yong)在(zai)開環(huan)控系統(tong)及(ji)閉環(huan)速度控制系統(tong); - 伺服閥(fa)中位沒有死(si)區,比例閥(fa)有中位死(si)區;
- 伺服(fu)閥的頻響(響應頻率)更高(gao)(gao),可(ke)以高(gao)(gao)達(da)200Hz左右,比例閥一(yi)般(ban)zui高(gao)(gao)幾十Hz;
- 伺服閥對液(ye)壓油液(ye)的(de)要求更(geng)高(gao),需要精過(guo)濾(lv)才行,否則容易堵塞,比例閥要求低一些;
3.閥(fa)(fa)(fa)芯(xin)(xin)結構及加工精度不同。比(bi)例(li)閥(fa)(fa)(fa)采(cai)用(yong)閥(fa)(fa)(fa)芯(xin)(xin)+閥(fa)(fa)(fa)體結構,閥(fa)(fa)(fa)體兼作閥(fa)(fa)(fa)套。伺服閥(fa)(fa)(fa)和伺服比(bi)例(li)閥(fa)(fa)(fa)采(cai)用(yong)閥(fa)(fa)(fa)芯(xin)(xin)+閥(fa)(fa)(fa)套的結構。 4.中(zhong)位(wei)機能(neng)種類不(bu)同(tong)。比例換(huan)向閥具有(you)與普通(tong)換(huan)向閥相似的中(zhong)位(wei)機能(neng),而伺服閥中(zhong)位(wei)機能(neng)只有(you)O型(xing)(Rexroth產(chan)品的E型(xing))。 5.閥的額定(ding)壓降不同。 電氣(qi)(qi)比例(li)(li)閥(fa)(fa)(fa)自動控(kong)(kong)制(zhi)(zhi)(zhi)可(ke)分成(cheng)(cheng)斷續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)和連(lian)續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)即開(kai)關控(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)(qi)動控(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統中(zhong)使用動作頻率較低的(de)(de)開(kai)關式(ON-OFF)的(de)(de)換(huan)向(xiang)閥(fa)(fa)(fa)來(lai)(lai)控(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)(qi)路(lu)的(de)(de)通斷。靠減壓(ya)閥(fa)(fa)(fa)來(lai)(lai)調(diao)節(jie)所(suo)需(xu)(xu)要(yao)(yao)的(de)(de)壓(ya)力,靠節(jie)流(liu)閥(fa)(fa)(fa)來(lai)(lai)調(diao)節(jie)所(suo)需(xu)(xu)要(yao)(yao)的(de)(de)流(liu)量。這(zhe)(zhe)種傳統的(de)(de)氣(qi)(qi)動控(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統要(yao)(yao)想(xiang)要(yao)(yao)有多(duo)(duo)個(ge)輸出(chu)力和多(duo)(duo)個(ge)運動速度,就需(xu)(xu)要(yao)(yao)多(duo)(duo)個(ge)減壓(ya)閥(fa)(fa)(fa)、節(jie)流(liu)閥(fa)(fa)(fa)及換(huan)向(xiang)閥(fa)(fa)(fa)。這(zhe)(zhe)樣,不僅元(yuan)件需(xu)(xu)要(yao)(yao)多(duo)(duo),成(cheng)(cheng)本高,構(gou)成(cheng)(cheng)系(xi)統復(fu)雜,且許多(duo)(duo)元(yuan)件都需(xu)(xu)要(yao)(yao)預先進行人工調(diao)節(jie)。電氣(qi)(qi)比例(li)(li)閥(fa)(fa)(fa)控(kong)(kong)制(zhi)(zhi)(zhi)屬于連(lian)續(xu)控(kong)(kong)制(zhi)(zhi)(zhi),其(qi)特點是輸出(chu)量隨輸入量的(de)(de)變化(hua)而變化(hua),輸出(chu)量與輸入量之間存(cun)在(zai)一定的(de)(de)比例(li)(li)關系(xi)。比例(li)(li)控(kong)(kong)制(zhi)(zhi)(zhi)有開(kai)環控(kong)(kong)制(zhi)(zhi)(zhi)和閉(bi)環控(kong)(kong)制(zhi)(zhi)(zhi)之分。 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? |