意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動裝置(zhi)(zhi)不同。比(bi)例閥的驅(qu)動裝置(zhi)(zhi)是(shi)比(bi)例電磁(ci)鐵；伺服閥的驅(qu)動裝置(zhi)(zhi)是(shi)力(li)馬達或力(li)矩(ju)馬達； 2.性能參數不(bu)(bu)同(tong)。滯環、中位(wei)死區、頻寬、過(guo)濾(lv)精度等特性不(bu)(bu)同(tong)，因此(ci)應(ying)用場合不(bu)(bu)同(tong)，伺服閥和(he)伺服比例(li)閥主要應(ying)用在閉環控(kong)制(zhi)系統(tong)，其它(ta)結構(gou)的比例(li)閥主要應(ying)用在開環控(kong)系統(tong)及閉環速度控(kong)制(zhi)系統(tong)； - 伺服閥中(zhong)位沒有死區，比例(li)閥有中(zhong)位死區；
- 伺服閥(fa)的頻(pin)響（響應頻(pin)率）更高，可以高達200Hz左右，比(bi)例閥(fa)一般zui高幾十Hz；
- 伺服閥對液(ye)壓油液(ye)的要(yao)求(qiu)(qiu)更高，需要(yao)精過濾(lv)才行，否則容易堵塞，比例(li)閥要(yao)求(qiu)(qiu)低一些；
3.閥(fa)(fa)(fa)(fa)芯(xin)結構及(ji)加工精度不(bu)同(tong)。比(bi)例閥(fa)(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)(fa)體(ti)結構，閥(fa)(fa)(fa)(fa)體(ti)兼(jian)作閥(fa)(fa)(fa)(fa)套(tao)。伺服閥(fa)(fa)(fa)(fa)和伺服比(bi)例閥(fa)(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)(fa)套(tao)的結構。 4.中位機(ji)能(neng)種類不(bu)同。比例換(huan)向閥具有與(yu)普通換(huan)向閥相(xiang)似的中位機(ji)能(neng)，而伺服閥中位機(ji)能(neng)只有O型(xing)(xing)（Rexroth產品的E型(xing)(xing)）。 5.閥的額定(ding)壓降不同。 電氣(qi)(qi)比(bi)(bi)例閥(fa)(fa)自動(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)可分成(cheng)(cheng)斷續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)和連續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)即開(kai)關控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)。氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)系(xi)統中使(shi)用動(dong)(dong)作頻率較(jiao)低的(de)開(kai)關式(ON-OFF)的(de)換向(xiang)閥(fa)(fa)來(lai)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)氣(qi)(qi)路的(de)通(tong)斷。靠(kao)減壓閥(fa)(fa)來(lai)調節(jie)所(suo)需(xu)要(yao)(yao)(yao)的(de)壓力，靠(kao)節(jie)流閥(fa)(fa)來(lai)調節(jie)所(suo)需(xu)要(yao)(yao)(yao)的(de)流量(liang)。這種(zhong)傳(chuan)統的(de)氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)系(xi)統要(yao)(yao)(yao)想要(yao)(yao)(yao)有多個輸(shu)(shu)(shu)出(chu)力和多個運(yun)動(dong)(dong)速(su)度，就需(xu)要(yao)(yao)(yao)多個減壓閥(fa)(fa)、節(jie)流閥(fa)(fa)及換向(xiang)閥(fa)(fa)。這樣，不僅元(yuan)件需(xu)要(yao)(yao)(yao)多，成(cheng)(cheng)本高，構成(cheng)(cheng)系(xi)統復雜，且許多元(yuan)件都需(xu)要(yao)(yao)(yao)預(yu)先進(jin)行人工調節(jie)。電氣(qi)(qi)比(bi)(bi)例閥(fa)(fa)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)屬(shu)于連續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)，其特點是輸(shu)(shu)(shu)出(chu)量(liang)隨(sui)輸(shu)(shu)(shu)入量(liang)的(de)變(bian)化而(er)變(bian)化，輸(shu)(shu)(shu)出(chu)量(liang)與(yu)輸(shu)(shu)(shu)入量(liang)之間存在一定的(de)比(bi)(bi)例關系(xi)。比(bi)(bi)例控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)有開(kai)環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)和閉環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)之分。 意大利ATOS比例閥型號表(biao)： 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? |
