意大利ATOS比例閥主要體現在以下幾點： 1.驅動(dong)裝(zhuang)置(zhi)不同(tong)。比例閥的驅動(dong)裝(zhuang)置(zhi)是比例電磁鐵；伺(si)服閥的驅動(dong)裝(zhuang)置(zhi)是力(li)馬(ma)達(da)或力(li)矩馬(ma)達(da)； ; 2.性能參數(shu)不(bu)同(tong)(tong)。滯環、中位死(si)區、頻(pin)寬、過濾精度(du)等特性不(bu)同(tong)(tong)，因此應用場合不(bu)同(tong)(tong)，伺服閥和(he)伺服比例閥主(zhu)要應用在(zai)閉(bi)環控(kong)(kong)制系(xi)統，其它結(jie)構的比例閥主(zhu)要應用在(zai)開環控(kong)(kong)系(xi)統及閉(bi)環速度(du)控(kong)(kong)制系(xi)統； - 伺(si)服閥中位沒(mei)有死區，比例(li)閥有中位死區；
- 伺服閥的頻響（響應頻率）更高(gao)，可以高(gao)達200Hz左右，比(bi)例閥一般zui高(gao)幾十Hz；
- 伺服閥(fa)對液壓油液的(de)要(yao)求(qiu)更高(gao)，需要(yao)精過濾才行，否則容易堵(du)塞(sai)，比例閥(fa)要(yao)求(qiu)低一些(xie)；
3.閥(fa)芯結構及加工精度不(bu)同。比(bi)例閥(fa)采用閥(fa)芯+閥(fa)體結構，閥(fa)體兼作閥(fa)套(tao)。伺(si)(si)服(fu)(fu)閥(fa)和伺(si)(si)服(fu)(fu)比(bi)例閥(fa)采用閥(fa)芯+閥(fa)套(tao)的結構。 4.中位機(ji)能(neng)種類(lei)不(bu)同。比例(li)換向閥(fa)具有(you)與普(pu)通換向閥(fa)相似的(de)中位機(ji)能(neng)，而伺服閥(fa)中位機(ji)能(neng)只有(you)O型（Rexroth產品的(de)E型）。 5.閥的額定(ding)壓降(jiang)不同(tong)。 電氣比(bi)例(li)閥(fa)(fa)自(zi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可分(fen)成(cheng)斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)即(ji)開(kai)關控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)中使用動(dong)作頻率較低的(de)(de)開(kai)關式(ON-OFF)的(de)(de)換向(xiang)閥(fa)(fa)來控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣路的(de)(de)通斷。靠(kao)減(jian)壓閥(fa)(fa)來調節所需要的(de)(de)壓力(li)，靠(kao)節流(liu)閥(fa)(fa)來調節所需要的(de)(de)流(liu)量。這種傳統(tong)(tong)的(de)(de)氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)要想要有多(duo)個(ge)(ge)輸(shu)出力(li)和多(duo)個(ge)(ge)運(yun)動(dong)速度，就需要多(duo)個(ge)(ge)減(jian)壓閥(fa)(fa)、節流(liu)閥(fa)(fa)及換向(xiang)閥(fa)(fa)。這樣，不僅元(yuan)件(jian)需要多(duo)，成(cheng)本高，構成(cheng)系統(tong)(tong)復(fu)雜，且許多(duo)元(yuan)件(jian)都需要預(yu)先(xian)進行(xing)人工調節。電氣比(bi)例(li)閥(fa)(fa)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬于(yu)連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)，其(qi)特(te)點是輸(shu)出量隨輸(shu)入量的(de)(de)變化而變化，輸(shu)出量與(yu)輸(shu)入量之(zhi)間(jian)存在一定(ding)的(de)(de)比(bi)例(li)關系。比(bi)例(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有開(kai)環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和閉(bi)環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)之(zhi)分(fen)。 意大利ATOS比例閥型號表： 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 |
