意大利ATOS比例閥主要體現在以下幾點： 1.驅動裝置不同。比(bi)例閥(fa)的(de)驅動裝置是比(bi)例電磁鐵(tie)；伺服閥(fa)的(de)驅動裝置是力(li)馬達或力(li)矩(ju)馬達； 2.性(xing)能參數(shu)不同(tong)。滯環(huan)(huan)、中位死(si)區、頻寬(kuan)、過濾(lv)精度等特性(xing)不同(tong)，因此應用場合不同(tong)，伺服閥(fa)(fa)和(he)伺服比例(li)閥(fa)(fa)主(zhu)要應用在(zai)閉(bi)環(huan)(huan)控制系統，其它結構(gou)的(de)比例(li)閥(fa)(fa)主(zhu)要應用在(zai)開環(huan)(huan)控系統及(ji)閉(bi)環(huan)(huan)速度控制系統； - 伺服閥中位沒(mei)有死區，比(bi)例閥有中位死區；
- 伺服閥的頻響（響應頻率(lv)）更(geng)高(gao)，可以高(gao)達200Hz左(zuo)右，比例(li)閥一般(ban)zui高(gao)幾十Hz；
- 伺(si)服閥(fa)對液壓(ya)油液的要求更高，需要精(jing)過濾才行(xing)，否則容易堵(du)塞，比例閥(fa)要求低一些；
3.閥(fa)芯結構及(ji)加工精度(du)不(bu)同(tong)。比(bi)例閥(fa)采(cai)(cai)用閥(fa)芯+閥(fa)體結構，閥(fa)體兼作閥(fa)套。伺(si)服(fu)閥(fa)和伺(si)服(fu)比(bi)例閥(fa)采(cai)(cai)用閥(fa)芯+閥(fa)套的結構。 4.中位(wei)機能(neng)種類(lei)不同。比例換(huan)向閥具有(you)與普通換(huan)向閥相似的中位(wei)機能(neng)，而伺服閥中位(wei)機能(neng)只有(you)O型（Rexroth產品的E型）。 5.閥的(de)額(e)定(ding)壓降不同。 電氣比(bi)例(li)閥自動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)可分成(cheng)斷續控(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)連續控(kong)(kong)(kong)(kong)制(zhi)(zhi)。斷續控(kong)(kong)(kong)(kong)制(zhi)(zhi)即開關(guan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)。氣動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)中使用動(dong)(dong)作頻率較(jiao)低的開關(guan)式(ON-OFF)的換(huan)向(xiang)閥來(lai)控(kong)(kong)(kong)(kong)制(zhi)(zhi)氣路的通斷。靠減壓閥來(lai)調(diao)節(jie)所需(xu)要(yao)(yao)的壓力(li)(li)，靠節(jie)流(liu)閥來(lai)調(diao)節(jie)所需(xu)要(yao)(yao)的流(liu)量(liang)。這種(zhong)傳統(tong)的氣動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)要(yao)(yao)想要(yao)(yao)有(you)多(duo)(duo)(duo)個輸(shu)出(chu)力(li)(li)和(he)多(duo)(duo)(duo)個運動(dong)(dong)速度，就需(xu)要(yao)(yao)多(duo)(duo)(duo)個減壓閥、節(jie)流(liu)閥及換(huan)向(xiang)閥。這樣，不僅元件需(xu)要(yao)(yao)多(duo)(duo)(duo)，成(cheng)本高，構成(cheng)系(xi)統(tong)復(fu)雜，且許多(duo)(duo)(duo)元件都需(xu)要(yao)(yao)預先進行人(ren)工調(diao)節(jie)。電氣比(bi)例(li)閥控(kong)(kong)(kong)(kong)制(zhi)(zhi)屬于連續控(kong)(kong)(kong)(kong)制(zhi)(zhi)，其特點是(shi)輸(shu)出(chu)量(liang)隨輸(shu)入量(liang)的變(bian)化(hua)而變(bian)化(hua)，輸(shu)出(chu)量(liang)與輸(shu)入量(liang)之間存在一定(ding)的比(bi)例(li)關(guan)系(xi)。比(bi)例(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)有(you)開環(huan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)閉環(huan)控(kong)(kong)(kong)(kong)制(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? |
