意大利ATOS比例閥主要體現在以下幾點: 1.驅動裝置(zhi)不同。比(bi)例閥(fa)的(de)驅動裝置(zhi)是(shi)比(bi)例電磁鐵;伺服閥(fa)的(de)驅動裝置(zhi)是(shi)力(li)馬達或力(li)矩(ju)馬達; 2.性能(neng)參數不(bu)同。滯環(huan)、中位死區、頻寬、過(guo)濾精度等(deng)特(te)性不(bu)同,因此應(ying)用場合不(bu)同,伺服閥(fa)(fa)和伺服比(bi)(bi)例(li)閥(fa)(fa)主要應(ying)用在(zai)閉環(huan)控(kong)制系(xi)統,其它結構的比(bi)(bi)例(li)閥(fa)(fa)主要應(ying)用在(zai)開環(huan)控(kong)系(xi)統及閉環(huan)速度控(kong)制系(xi)統; - 伺服閥(fa)中位(wei)沒(mei)有死區,比(bi)例閥(fa)有中位(wei)死區;
- 伺服閥(fa)的頻響(xiang)(響(xiang)應頻率)更高,可以高達200Hz左右,比例閥(fa)一般zui高幾十Hz;
- 伺(si)服閥對液壓油(you)液的要(yao)求更高(gao),需要(yao)精過濾才行,否則容易堵塞(sai),比例閥要(yao)求低(di)一些;
3.閥(fa)(fa)芯(xin)結構(gou)(gou)及加工精(jing)度不(bu)同。比例閥(fa)(fa)采(cai)用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)體結構(gou)(gou),閥(fa)(fa)體兼作閥(fa)(fa)套。伺服閥(fa)(fa)和伺服比例閥(fa)(fa)采(cai)用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)套的結構(gou)(gou)。 4.中(zhong)位(wei)機(ji)能(neng)種類不(bu)同。比例換向(xiang)閥具有(you)與(yu)普通換向(xiang)閥相(xiang)似的中(zhong)位(wei)機(ji)能(neng),而伺(si)服閥中(zhong)位(wei)機(ji)能(neng)只有(you)O型(xing)(Rexroth產(chan)品(pin)的E型(xing))。 5.閥的額定壓(ya)降(jiang)不同。 電(dian)氣比(bi)(bi)例(li)(li)(li)閥(fa)自動(dong)控(kong)(kong)(kong)(kong)制(zhi)可分成(cheng)(cheng)斷(duan)續控(kong)(kong)(kong)(kong)制(zhi)和(he)(he)連續控(kong)(kong)(kong)(kong)制(zhi)。斷(duan)續控(kong)(kong)(kong)(kong)制(zhi)即開關(guan)控(kong)(kong)(kong)(kong)制(zhi)。氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)系(xi)統(tong)中使用動(dong)作頻(pin)率較低(di)的開關(guan)式(ON-OFF)的換(huan)向閥(fa)來控(kong)(kong)(kong)(kong)制(zhi)氣路的通斷(duan)。靠減壓(ya)(ya)閥(fa)來調(diao)節(jie)所需(xu)要的壓(ya)(ya)力,靠節(jie)流(liu)(liu)閥(fa)來調(diao)節(jie)所需(xu)要的流(liu)(liu)量(liang)(liang)。這種傳統(tong)的氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)系(xi)統(tong)要想要有多(duo)(duo)(duo)(duo)個輸出(chu)力和(he)(he)多(duo)(duo)(duo)(duo)個運動(dong)速度,就需(xu)要多(duo)(duo)(duo)(duo)個減壓(ya)(ya)閥(fa)、節(jie)流(liu)(liu)閥(fa)及換(huan)向閥(fa)。這樣,不僅元(yuan)(yuan)件需(xu)要多(duo)(duo)(duo)(duo),成(cheng)(cheng)本高,構(gou)成(cheng)(cheng)系(xi)統(tong)復雜,且許多(duo)(duo)(duo)(duo)元(yuan)(yuan)件都需(xu)要預先進行人工調(diao)節(jie)。電(dian)氣比(bi)(bi)例(li)(li)(li)閥(fa)控(kong)(kong)(kong)(kong)制(zhi)屬于連續控(kong)(kong)(kong)(kong)制(zhi),其特(te)點是輸出(chu)量(liang)(liang)隨輸入(ru)量(liang)(liang)的變化(hua)(hua)而變化(hua)(hua),輸出(chu)量(liang)(liang)與(yu)輸入(ru)量(liang)(liang)之(zhi)(zhi)間存在一(yi)定的比(bi)(bi)例(li)(li)(li)關(guan)系(xi)。比(bi)(bi)例(li)(li)(li)控(kong)(kong)(kong)(kong)制(zhi)有開環控(kong)(kong)(kong)(kong)制(zhi)和(he)(he)閉(bi)環控(kong)(kong)(kong)(kong)制(zhi)之(zhi)(zhi)分。 意大利ATOS比例閥型號表(biao): LEQZO-A-162S4 LEQZO-A-252L4 LEQZO-A-252S4 LIQZO-LE-252L4 LIQZO-LE-253L4 LIQZO-LE-253L4/Q LIQZO-LE-322L4 LIQZO-LE-322L4/F LIQZO-LE-322L4/Q LIQZO-LE-402L4 LIQZO-LE-403-L4 LIQZO-LE-403-L4/Q LIQZO-LE-502L4 LIQZO-LE-503L4 LIQZO-LE-632L4 LIQZO-LE-632L4/Q LIQZO-LE-633L4 LIQZO-LE-803-L4 LIQZO-LE-803-L4/F LIQZO-LES-BP-502L4/Z LIQZO-LES-PS-162L4 LIQZO-LES-PS-162L4/Z LIQZO-T-402L4 LIQZO-T-502L4 LIQZO-TE-162L4 LIQZO-TE-252L4 LIQZO-TE-252L4/I LIQZO-TE-322L4 LIQZO-TE-322L4/F LIQZO-TE-402L4 LIQZO-TE-502L4 LIQZO-TES-PS-162L4 |