意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動裝(zhuang)置(zhi)不同。比例(li)閥的驅(qu)動裝(zhuang)置(zhi)是比例(li)電磁鐵(tie);伺服(fu)閥的驅(qu)動裝(zhuang)置(zhi)是力(li)(li)馬達或(huo)力(li)(li)矩馬達; 2.性(xing)能參數不同。滯環、中位死區(qu)、頻(pin)寬(kuan)、過濾(lv)精度(du)等特性(xing)不同,因此應用場合不同,伺服(fu)(fu)閥(fa)和伺服(fu)(fu)比例閥(fa)主要應用在(zai)閉(bi)環控制系(xi)(xi)統(tong),其(qi)它結構的比例閥(fa)主要應用在(zai)開環控系(xi)(xi)統(tong)及閉(bi)環速度(du)控制系(xi)(xi)統(tong); - 伺(si)服閥中(zhong)位沒有死(si)區,比例閥有中(zhong)位死(si)區;
- 伺(si)服(fu)閥的頻響(xiang)(響(xiang)應頻率)更(geng)高(gao),可以高(gao)達200Hz左右,比例閥一般zui高(gao)幾十Hz;
- 伺服閥對液(ye)壓油液(ye)的要求更(geng)高,需要精過濾(lv)才行,否則容易堵(du)塞,比例(li)閥要求低一些(xie);
3.閥(fa)(fa)芯(xin)結(jie)構及加(jia)工精度不同。比例(li)閥(fa)(fa)采用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)體結(jie)構,閥(fa)(fa)體兼作閥(fa)(fa)套。伺(si)(si)服閥(fa)(fa)和伺(si)(si)服比例(li)閥(fa)(fa)采用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)套的結(jie)構。 4.中位(wei)機(ji)能(neng)(neng)種(zhong)類(lei)不(bu)同。比例換向閥(fa)具(ju)有與(yu)普通換向閥(fa)相(xiang)似的中位(wei)機(ji)能(neng)(neng),而伺服(fu)閥(fa)中位(wei)機(ji)能(neng)(neng)只有O型(xing)(Rexroth產(chan)品的E型(xing))。 5.閥的額定壓降不同。 電氣比(bi)(bi)例(li)閥(fa)(fa)自動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)可分(fen)成(cheng)斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和(he)連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)即開關控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)系統(tong)中使用動(dong)作頻率較(jiao)低的(de)(de)(de)開關式(shi)(ON-OFF)的(de)(de)(de)換向閥(fa)(fa)來控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)氣路(lu)的(de)(de)(de)通斷。靠(kao)減(jian)壓閥(fa)(fa)來調節(jie)(jie)(jie)所需要(yao)(yao)(yao)(yao)的(de)(de)(de)壓力(li)(li),靠(kao)節(jie)(jie)(jie)流閥(fa)(fa)來調節(jie)(jie)(jie)所需要(yao)(yao)(yao)(yao)的(de)(de)(de)流量(liang)。這(zhe)種(zhong)傳統(tong)的(de)(de)(de)氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)系統(tong)要(yao)(yao)(yao)(yao)想要(yao)(yao)(yao)(yao)有多(duo)(duo)個(ge)輸(shu)出(chu)力(li)(li)和(he)多(duo)(duo)個(ge)運動(dong)速度,就需要(yao)(yao)(yao)(yao)多(duo)(duo)個(ge)減(jian)壓閥(fa)(fa)、節(jie)(jie)(jie)流閥(fa)(fa)及(ji)換向閥(fa)(fa)。這(zhe)樣,不僅元(yuan)件需要(yao)(yao)(yao)(yao)多(duo)(duo),成(cheng)本高(gao),構成(cheng)系統(tong)復雜,且許多(duo)(duo)元(yuan)件都需要(yao)(yao)(yao)(yao)預先進行人(ren)工調節(jie)(jie)(jie)。電氣比(bi)(bi)例(li)閥(fa)(fa)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)屬于(yu)連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi),其特點是輸(shu)出(chu)量(liang)隨輸(shu)入量(liang)的(de)(de)(de)變化(hua)而變化(hua),輸(shu)出(chu)量(liang)與輸(shu)入量(liang)之(zhi)間存在一定的(de)(de)(de)比(bi)(bi)例(li)關系。比(bi)(bi)例(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)有開環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和(he)閉環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)之(zhi)分(fen)。 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 |