意大利ATOS比例閥主要體現在以下幾點： 1.驅動(dong)裝置(zhi)不同(tong)。比(bi)例閥(fa)的驅動(dong)裝置(zhi)是(shi)比(bi)例電磁鐵；伺服閥(fa)的驅動(dong)裝置(zhi)是(shi)力馬(ma)達或力矩馬(ma)達； 2.性能(neng)參(can)數不(bu)同。滯環(huan)、中位死區、頻寬、過(guo)濾精度等特性不(bu)同，因此(ci)應用(yong)場合不(bu)同，伺服閥(fa)和伺服比例閥(fa)主(zhu)要應用(yong)在閉環(huan)控制系統，其它結構的比例閥(fa)主(zhu)要應用(yong)在開環(huan)控系統及閉環(huan)速(su)度控制系統； - 伺服閥中位(wei)(wei)沒有死(si)區，比例(li)閥有中位(wei)(wei)死(si)區；
- 伺服閥的頻響（響應頻率(lv)）更(geng)高，可以(yi)高達(da)200Hz左右(you)，比例閥一般zui高幾十(shi)Hz；
- 伺(si)服閥對(dui)液壓油液的(de)要求(qiu)更高，需(xu)要精過濾才行，否則容(rong)易堵塞，比例閥要求(qiu)低一些(xie)；
3.閥(fa)(fa)(fa)芯(xin)結(jie)構及加工精度不同。比例(li)閥(fa)(fa)(fa)采(cai)(cai)用閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)體結(jie)構，閥(fa)(fa)(fa)體兼作閥(fa)(fa)(fa)套。伺服閥(fa)(fa)(fa)和伺服比例(li)閥(fa)(fa)(fa)采(cai)(cai)用閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)套的結(jie)構。 4.中位(wei)機能(neng)種類(lei)不同。比(bi)例換向閥具有與(yu)普通換向閥相(xiang)似(si)的中位(wei)機能(neng)，而伺服閥中位(wei)機能(neng)只有O型(xing)（Rexroth產(chan)品的E型(xing)）。 5.閥的額定(ding)壓降不同。 電(dian)氣比例(li)(li)閥(fa)自動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分(fen)成(cheng)斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)即(ji)開(kai)(kai)關(guan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統(tong)(tong)中使用動(dong)作頻率較低的開(kai)(kai)關(guan)式(ON-OFF)的換向閥(fa)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣路的通(tong)斷。靠減壓(ya)(ya)閥(fa)來(lai)調(diao)節(jie)(jie)所需要的壓(ya)(ya)力，靠節(jie)(jie)流閥(fa)來(lai)調(diao)節(jie)(jie)所需要的流量(liang)(liang)。這種傳統(tong)(tong)的氣動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統(tong)(tong)要想要有多個(ge)輸(shu)出(chu)力和(he)多個(ge)運(yun)動(dong)速度，就需要多個(ge)減壓(ya)(ya)閥(fa)、節(jie)(jie)流閥(fa)及換向閥(fa)。這樣，不僅元件需要多，成(cheng)本(ben)高(gao)，構成(cheng)系統(tong)(tong)復雜，且許(xu)多元件都需要預先進行人工調(diao)節(jie)(jie)。電(dian)氣比例(li)(li)閥(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其特點是輸(shu)出(chu)量(liang)(liang)隨(sui)輸(shu)入(ru)量(liang)(liang)的變化而(er)變化，輸(shu)出(chu)量(liang)(liang)與輸(shu)入(ru)量(liang)(liang)之間存在一定的比例(li)(li)關(guan)系。比例(li)(li)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開(kai)(kai)環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)閉環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)之分(fen)。 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? |
