意大利ATOS比例閥主要體現在以下幾點： 1.驅動(dong)裝(zhuang)(zhuang)置不同(tong)。比(bi)例(li)閥的(de)驅動(dong)裝(zhuang)(zhuang)置是比(bi)例(li)電(dian)磁鐵；伺服閥的(de)驅動(dong)裝(zhuang)(zhuang)置是力馬達或力矩馬達； 2.性能參數(shu)不(bu)同(tong)。滯(zhi)環(huan)、中位死區、頻寬、過濾精(jing)度等(deng)特性不(bu)同(tong)，因此(ci)應(ying)用(yong)場(chang)合不(bu)同(tong)，伺服閥(fa)和伺服比例(li)閥(fa)主要(yao)(yao)應(ying)用(yong)在閉環(huan)控(kong)制(zhi)系統，其它結構的比例(li)閥(fa)主要(yao)(yao)應(ying)用(yong)在開(kai)環(huan)控(kong)系統及閉環(huan)速度控(kong)制(zhi)系統； - 伺服閥中位沒(mei)有(you)(you)死(si)區，比例閥有(you)(you)中位死(si)區；
- 伺服閥(fa)的頻響（響應頻率）更(geng)高，可以高達200Hz左右，比例閥(fa)一般zui高幾十Hz；
- 伺服閥對液壓油液的要求(qiu)更高，需要精過濾才行(xing)，否(fou)則容易(yi)堵塞，比例閥要求(qiu)低一些(xie)；
3.閥芯(xin)(xin)(xin)結構(gou)及加工精度(du)不(bu)同。比例閥采用閥芯(xin)(xin)(xin)+閥體結構(gou)，閥體兼作閥套。伺服(fu)閥和伺服(fu)比例閥采用閥芯(xin)(xin)(xin)+閥套的結構(gou)。 4.中(zhong)位(wei)機(ji)能(neng)(neng)種類不同。比例換向閥(fa)具有與(yu)普通換向閥(fa)相(xiang)似的中(zhong)位(wei)機(ji)能(neng)(neng)，而(er)伺服閥(fa)中(zhong)位(wei)機(ji)能(neng)(neng)只有O型(xing)（Rexroth產品的E型(xing)）。 5.閥(fa)的額定壓(ya)降不(bu)同。 電(dian)氣(qi)比(bi)例閥(fa)(fa)(fa)自(zi)動(dong)(dong)控(kong)(kong)制可(ke)分(fen)成斷續控(kong)(kong)制和連續控(kong)(kong)制。斷續控(kong)(kong)制即開關控(kong)(kong)制。氣(qi)動(dong)(dong)控(kong)(kong)制系統(tong)(tong)(tong)(tong)中使用(yong)動(dong)(dong)作頻率(lv)較低的(de)(de)(de)開關式(ON-OFF)的(de)(de)(de)換向(xiang)閥(fa)(fa)(fa)來控(kong)(kong)制氣(qi)路的(de)(de)(de)通斷。靠(kao)減壓(ya)閥(fa)(fa)(fa)來調(diao)節所需(xu)要(yao)(yao)的(de)(de)(de)壓(ya)力，靠(kao)節流(liu)閥(fa)(fa)(fa)來調(diao)節所需(xu)要(yao)(yao)的(de)(de)(de)流(liu)量(liang)(liang)。這種(zhong)傳統(tong)(tong)(tong)(tong)的(de)(de)(de)氣(qi)動(dong)(dong)控(kong)(kong)制系統(tong)(tong)(tong)(tong)要(yao)(yao)想(xiang)要(yao)(yao)有多個輸(shu)(shu)出(chu)力和多個運動(dong)(dong)速度，就(jiu)需(xu)要(yao)(yao)多個減壓(ya)閥(fa)(fa)(fa)、節流(liu)閥(fa)(fa)(fa)及(ji)換向(xiang)閥(fa)(fa)(fa)。這樣，不僅元件需(xu)要(yao)(yao)多，成本高，構成系統(tong)(tong)(tong)(tong)復雜，且(qie)許多元件都需(xu)要(yao)(yao)預先進行人工調(diao)節。電(dian)氣(qi)比(bi)例閥(fa)(fa)(fa)控(kong)(kong)制屬(shu)于連續控(kong)(kong)制，其特點是輸(shu)(shu)出(chu)量(liang)(liang)隨輸(shu)(shu)入量(liang)(liang)的(de)(de)(de)變化而變化，輸(shu)(shu)出(chu)量(liang)(liang)與輸(shu)(shu)入量(liang)(liang)之間存在一(yi)定(ding)的(de)(de)(de)比(bi)例關系。比(bi)例控(kong)(kong)制有開環控(kong)(kong)制和閉環控(kong)(kong)制之分(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? |
