意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動(dong)裝置(zhi)(zhi)不同。比例閥(fa)的驅(qu)動(dong)裝置(zhi)(zhi)是比例電磁鐵(tie);伺(si)服(fu)閥(fa)的驅(qu)動(dong)裝置(zhi)(zhi)是力馬達或力矩馬達; 2.性(xing)能參數不同。滯環(huan)、中位(wei)死區、頻(pin)寬、過濾精(jing)度等特性(xing)不同,因此應(ying)用場合不同,伺服閥(fa)和伺服比例(li)閥(fa)主要應(ying)用在閉(bi)環(huan)控(kong)制系(xi)統(tong),其它結構(gou)的比例(li)閥(fa)主要應(ying)用在開環(huan)控(kong)系(xi)統(tong)及閉(bi)環(huan)速度控(kong)制系(xi)統(tong); - 伺服閥中位(wei)(wei)沒有(you)死區(qu)(qu),比(bi)例閥有(you)中位(wei)(wei)死區(qu)(qu);
- 伺服閥(fa)的頻響(響應(ying)頻率(lv))更(geng)高(gao),可(ke)以高(gao)達200Hz左右,比(bi)例(li)閥(fa)一般(ban)zui高(gao)幾十Hz;
- 伺服閥(fa)對(dui)液(ye)(ye)壓油液(ye)(ye)的要求更高,需要精過濾才(cai)行,否則容易堵塞,比例閥(fa)要求低一些(xie);
3.閥(fa)芯結構(gou)及加(jia)工(gong)精(jing)度不同。比(bi)例閥(fa)采用(yong)閥(fa)芯+閥(fa)體結構(gou),閥(fa)體兼作閥(fa)套(tao)。伺服閥(fa)和(he)伺服比(bi)例閥(fa)采用(yong)閥(fa)芯+閥(fa)套(tao)的結構(gou)。 4.中位機能(neng)種(zhong)類不同。比例換向閥(fa)(fa)具(ju)有與(yu)普通(tong)換向閥(fa)(fa)相(xiang)似的(de)中位機能(neng),而伺(si)服閥(fa)(fa)中位機能(neng)只有O型(Rexroth產品的(de)E型)。 5.閥的(de)額定(ding)壓降不(bu)同。 電(dian)氣比例閥(fa)自動控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可分成斷(duan)續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和(he)連續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。斷(duan)續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)即開關(guan)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣動控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系(xi)統(tong)(tong)(tong)中使用動作頻(pin)率較低的(de)(de)(de)開關(guan)式(ON-OFF)的(de)(de)(de)換向(xiang)閥(fa)來(lai)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣路的(de)(de)(de)通斷(duan)。靠(kao)減壓閥(fa)來(lai)調(diao)節(jie)所(suo)需(xu)要(yao)的(de)(de)(de)壓力,靠(kao)節(jie)流(liu)閥(fa)來(lai)調(diao)節(jie)所(suo)需(xu)要(yao)的(de)(de)(de)流(liu)量(liang)。這種傳(chuan)統(tong)(tong)(tong)的(de)(de)(de)氣動控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系(xi)統(tong)(tong)(tong)要(yao)想要(yao)有多(duo)(duo)個輸(shu)出(chu)力和(he)多(duo)(duo)個運(yun)動速度,就需(xu)要(yao)多(duo)(duo)個減壓閥(fa)、節(jie)流(liu)閥(fa)及換向(xiang)閥(fa)。這樣,不(bu)僅元件(jian)(jian)需(xu)要(yao)多(duo)(duo),成本(ben)高,構成系(xi)統(tong)(tong)(tong)復雜,且許多(duo)(duo)元件(jian)(jian)都(dou)需(xu)要(yao)預先進行人工(gong)調(diao)節(jie)。電(dian)氣比例閥(fa)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬于連續控(kong)(kong)制(zhi)(zhi)(zhi)(zhi),其特點(dian)是(shi)輸(shu)出(chu)量(liang)隨輸(shu)入量(liang)的(de)(de)(de)變(bian)(bian)化而變(bian)(bian)化,輸(shu)出(chu)量(liang)與(yu)輸(shu)入量(liang)之間存在一定的(de)(de)(de)比例關(guan)系(xi)。比例控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有開環控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和(he)閉(bi)環控(kong)(kong)制(zhi)(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? |