意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動裝(zhuang)置不同。比例閥的驅(qu)動裝(zhuang)置是比例電磁鐵；伺服閥的驅(qu)動裝(zhuang)置是力馬(ma)達或(huo)力矩馬(ma)達； 2.性能參數不同。滯環、中(zhong)位死區、頻寬、過(guo)濾精度等特性不同，因此應用(yong)場合不同，伺服閥(fa)和(he)伺服比例閥(fa)主(zhu)(zhu)要應用(yong)在(zai)閉環控(kong)制系統，其它結構(gou)的比例閥(fa)主(zhu)(zhu)要應用(yong)在(zai)開環控(kong)系統及閉環速度控(kong)制系統； - 伺服閥(fa)中(zhong)位沒有(you)死區，比例閥(fa)有(you)中(zhong)位死區；
- 伺(si)服閥的(de)頻響（響應(ying)頻率）更(geng)高(gao)，可以高(gao)達200Hz左右，比例閥一般zui高(gao)幾(ji)十Hz；
- 伺服閥對液壓油液的要求更高，需要精(jing)過濾(lv)才行，否則容易堵塞，比(bi)例閥要求低(di)一些；
3.閥芯(xin)結(jie)(jie)構(gou)及加工精度不同。比(bi)例(li)(li)閥采用(yong)閥芯(xin)+閥體(ti)結(jie)(jie)構(gou)，閥體(ti)兼作閥套(tao)。伺服閥和伺服比(bi)例(li)(li)閥采用(yong)閥芯(xin)+閥套(tao)的結(jie)(jie)構(gou)。 4.中位(wei)機能種類(lei)不(bu)同(tong)。比例(li)換向(xiang)(xiang)閥(fa)具(ju)有(you)與普通(tong)換向(xiang)(xiang)閥(fa)相似的(de)中位(wei)機能，而伺服閥(fa)中位(wei)機能只(zhi)有(you)O型（Rexroth產(chan)品的(de)E型）。 5.閥的(de)額定壓(ya)降(jiang)不(bu)同(tong)。 電氣(qi)(qi)比(bi)例閥自動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分(fen)成(cheng)斷續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)連(lian)續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開(kai)(kai)關(guan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統中使用動(dong)作頻率(lv)較低(di)的(de)開(kai)(kai)關(guan)式(shi)(ON-OFF)的(de)換向閥來控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)(qi)路的(de)通斷。靠減壓(ya)閥來調節所需要(yao)(yao)的(de)壓(ya)力，靠節流(liu)閥來調節所需要(yao)(yao)的(de)流(liu)量(liang)。這種傳統的(de)氣(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統要(yao)(yao)想要(yao)(yao)有多個輸(shu)出(chu)(chu)(chu)力和(he)多個運(yun)動(dong)速度(du)，就需要(yao)(yao)多個減壓(ya)閥、節流(liu)閥及換向閥。這樣(yang)，不僅元件需要(yao)(yao)多，成(cheng)本(ben)高，構成(cheng)系統復(fu)雜，且許多元件都需要(yao)(yao)預先進(jin)行人工調節。電氣(qi)(qi)比(bi)例閥控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬(shu)于連(lian)續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其(qi)特點是輸(shu)出(chu)(chu)(chu)量(liang)隨輸(shu)入(ru)(ru)量(liang)的(de)變化而變化，輸(shu)出(chu)(chu)(chu)量(liang)與輸(shu)入(ru)(ru)量(liang)之(zhi)間存在一定的(de)比(bi)例關(guan)系。比(bi)例控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開(kai)(kai)環控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)閉環控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)之(zhi)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? |
