意大利ATOS比例閥主要體現在以下幾點： 1.驅動裝置不同。比例(li)閥的驅動裝置是比例(li)電磁鐵；伺服閥的驅動裝置是力馬達(da)或力矩馬達(da)； 2.性能參數(shu)不(bu)(bu)同(tong)(tong)。滯環、中位(wei)死區(qu)、頻(pin)寬(kuan)、過濾精(jing)度等特性不(bu)(bu)同(tong)(tong)，因此應用場合不(bu)(bu)同(tong)(tong)，伺(si)服(fu)閥(fa)和伺(si)服(fu)比(bi)(bi)例閥(fa)主要應用在(zai)(zai)閉(bi)環控制系(xi)統，其它(ta)結(jie)構(gou)的(de)比(bi)(bi)例閥(fa)主要應用在(zai)(zai)開(kai)環控系(xi)統及閉(bi)環速度控制系(xi)統； - 伺服(fu)閥中位沒有(you)死區，比例閥有(you)中位死區；
- 伺服閥的頻(pin)響(xiang)（響(xiang)應頻(pin)率）更高(gao)，可以(yi)高(gao)達200Hz左(zuo)右，比例閥一般zui高(gao)幾十Hz；
- 伺服閥對(dui)液(ye)壓油液(ye)的要求更(geng)高，需要精(jing)過(guo)濾(lv)才行，否則容易堵塞(sai)，比例閥要求低一些；
3.閥(fa)(fa)芯(xin)(xin)(xin)結構及加工(gong)精度(du)不同(tong)。比例閥(fa)(fa)采用閥(fa)(fa)芯(xin)(xin)(xin)+閥(fa)(fa)體結構，閥(fa)(fa)體兼(jian)作(zuo)閥(fa)(fa)套(tao)(tao)。伺服(fu)閥(fa)(fa)和伺服(fu)比例閥(fa)(fa)采用閥(fa)(fa)芯(xin)(xin)(xin)+閥(fa)(fa)套(tao)(tao)的(de)結構。 4.中(zhong)位(wei)機(ji)能種類不同。比例(li)換向閥(fa)具有與(yu)普通換向閥(fa)相似的中(zhong)位(wei)機(ji)能，而伺服(fu)閥(fa)中(zhong)位(wei)機(ji)能只有O型（Rexroth產品(pin)的E型）。 5.閥的額(e)定壓降不同(tong)。 電氣(qi)比(bi)例(li)閥(fa)(fa)(fa)(fa)自動(dong)(dong)控(kong)(kong)(kong)制(zhi)(zhi)可分成(cheng)斷(duan)(duan)續(xu)控(kong)(kong)(kong)制(zhi)(zhi)和連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)。斷(duan)(duan)續(xu)控(kong)(kong)(kong)制(zhi)(zhi)即開(kai)關控(kong)(kong)(kong)制(zhi)(zhi)。氣(qi)動(dong)(dong)控(kong)(kong)(kong)制(zhi)(zhi)系統(tong)(tong)中(zhong)使用動(dong)(dong)作頻率較低的開(kai)關式(shi)(ON-OFF)的換向(xiang)閥(fa)(fa)(fa)(fa)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)氣(qi)路的通斷(duan)(duan)。靠減壓閥(fa)(fa)(fa)(fa)來(lai)調(diao)節(jie)所需(xu)要的壓力，靠節(jie)流(liu)閥(fa)(fa)(fa)(fa)來(lai)調(diao)節(jie)所需(xu)要的流(liu)量。這(zhe)種傳統(tong)(tong)的氣(qi)動(dong)(dong)控(kong)(kong)(kong)制(zhi)(zhi)系統(tong)(tong)要想要有多(duo)個(ge)輸(shu)(shu)(shu)出(chu)力和多(duo)個(ge)運動(dong)(dong)速度(du)，就需(xu)要多(duo)個(ge)減壓閥(fa)(fa)(fa)(fa)、節(jie)流(liu)閥(fa)(fa)(fa)(fa)及(ji)換向(xiang)閥(fa)(fa)(fa)(fa)。這(zhe)樣，不僅元件需(xu)要多(duo)，成(cheng)本高，構成(cheng)系統(tong)(tong)復(fu)雜，且許多(duo)元件都需(xu)要預先進行(xing)人工(gong)調(diao)節(jie)。電氣(qi)比(bi)例(li)閥(fa)(fa)(fa)(fa)控(kong)(kong)(kong)制(zhi)(zhi)屬于(yu)連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)，其特點(dian)是輸(shu)(shu)(shu)出(chu)量隨輸(shu)(shu)(shu)入量的變化(hua)(hua)而變化(hua)(hua)，輸(shu)(shu)(shu)出(chu)量與輸(shu)(shu)(shu)入量之間(jian)存在一定的比(bi)例(li)關系。比(bi)例(li)控(kong)(kong)(kong)制(zhi)(zhi)有開(kai)環控(kong)(kong)(kong)制(zhi)(zhi)和閉環控(kong)(kong)(kong)制(zhi)(zhi)之分。 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? |
