意大利ATOS比例閥主要體現在以下幾點： 1.驅動裝(zhuang)置(zhi)不同。比例(li)閥的(de)驅動裝(zhuang)置(zhi)是比例(li)電磁鐵；伺服(fu)閥的(de)驅動裝(zhuang)置(zhi)是力(li)馬達或力(li)矩馬達； 2.性能參數不(bu)同(tong)(tong)。滯環(huan)、中位死區(qu)、頻寬、過濾精度等特性不(bu)同(tong)(tong)，因此應用場合不(bu)同(tong)(tong)，伺(si)服(fu)閥和(he)伺(si)服(fu)比例(li)閥主要(yao)應用在閉環(huan)控制系統(tong)，其它結構的比例(li)閥主要(yao)應用在開(kai)環(huan)控系統(tong)及閉環(huan)速度控制系統(tong)； - 伺服閥中(zhong)位(wei)沒有(you)死區，比例閥有(you)中(zhong)位(wei)死區；
- 伺服閥的(de)頻響（響應(ying)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；
- 伺服閥對液壓油(you)液的要(yao)(yao)求更(geng)高，需要(yao)(yao)精(jing)過濾才行，否則(ze)容易堵塞，比例閥要(yao)(yao)求低(di)一些(xie)；
3.閥芯結(jie)(jie)構及加工精(jing)度不同(tong)。比(bi)例(li)(li)閥采(cai)用閥芯+閥體(ti)結(jie)(jie)構，閥體(ti)兼作閥套。伺(si)服(fu)閥和伺(si)服(fu)比(bi)例(li)(li)閥采(cai)用閥芯+閥套的結(jie)(jie)構。 4.中(zhong)位機能(neng)種(zhong)類不(bu)同(tong)。比例換(huan)向閥(fa)(fa)具有與普通換(huan)向閥(fa)(fa)相似的中(zhong)位機能(neng)，而伺服閥(fa)(fa)中(zhong)位機能(neng)只有O型(xing)（Rexroth產(chan)品的E型(xing)）。 5.閥的(de)額定壓降(jiang)不同。 電氣(qi)比(bi)例(li)(li)閥(fa)自動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)可(ke)分成斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開(kai)關控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)(xi)統中使用動(dong)作(zuo)頻率較低的開(kai)關式(ON-OFF)的換向閥(fa)來控(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)路的通(tong)斷。靠減(jian)(jian)壓閥(fa)來調節(jie)(jie)(jie)所(suo)需要(yao)的壓力，靠節(jie)(jie)(jie)流(liu)閥(fa)來調節(jie)(jie)(jie)所(suo)需要(yao)的流(liu)量(liang)。這(zhe)種傳統的氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)(xi)統要(yao)想要(yao)有多個輸(shu)出力和多個運(yun)動(dong)速度，就需要(yao)多個減(jian)(jian)壓閥(fa)、節(jie)(jie)(jie)流(liu)閥(fa)及換向閥(fa)。這(zhe)樣，不僅元件需要(yao)多，成本高，構(gou)成系(xi)(xi)統復雜，且許多元件都需要(yao)預先(xian)進(jin)行人工調節(jie)(jie)(jie)。電氣(qi)比(bi)例(li)(li)閥(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬(shu)于(yu)連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其特點是輸(shu)出量(liang)隨輸(shu)入量(liang)的變(bian)化而變(bian)化，輸(shu)出量(liang)與輸(shu)入量(liang)之(zhi)間(jian)存在(zai)一定(ding)的比(bi)例(li)(li)關系(xi)(xi)。比(bi)例(li)(li)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開(kai)環控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和閉環控(kong)(kong)(kong)制(zhi)(zhi)(zhi)之(zhi)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? |
