意大利ATOS比例閥主要體現在以下幾點： 1.驅動裝置(zhi)不同。比(bi)例閥(fa)的驅動裝置(zhi)是(shi)比(bi)例電磁鐵；伺(si)服閥(fa)的驅動裝置(zhi)是(shi)力馬達或力矩馬達； 2.性能參數不同。滯(zhi)環(huan)、中位死區、頻寬、過(guo)濾(lv)精(jing)度(du)等特性不同，因此應(ying)用場(chang)合不同，伺服(fu)閥(fa)和伺服(fu)比例(li)(li)閥(fa)主要(yao)(yao)應(ying)用在(zai)閉環(huan)控(kong)制(zhi)系統(tong)，其它結(jie)構的比例(li)(li)閥(fa)主要(yao)(yao)應(ying)用在(zai)開環(huan)控(kong)系統(tong)及閉環(huan)速度(du)控(kong)制(zhi)系統(tong)； - 伺服閥中位沒有死區，比例(li)閥有中位死區；
- 伺服(fu)閥的頻響(xiang)（響(xiang)應頻率）更高，可以高達200Hz左右，比(bi)例閥一般zui高幾十Hz；
- 伺服(fu)閥對(dui)液壓油(you)液的要(yao)(yao)求更高，需(xu)要(yao)(yao)精過濾才(cai)行，否(fou)則容(rong)易(yi)堵塞，比例閥要(yao)(yao)求低一些；
3.閥(fa)芯(xin)結(jie)構及(ji)加工精(jing)度不同。比(bi)例(li)閥(fa)采用閥(fa)芯(xin)+閥(fa)體(ti)結(jie)構，閥(fa)體(ti)兼作閥(fa)套(tao)。伺服(fu)閥(fa)和伺服(fu)比(bi)例(li)閥(fa)采用閥(fa)芯(xin)+閥(fa)套(tao)的結(jie)構。 4.中位(wei)機(ji)(ji)能種類(lei)不同。比例換(huan)向(xiang)閥具(ju)有與(yu)普通(tong)換(huan)向(xiang)閥相似的中位(wei)機(ji)(ji)能，而(er)伺服閥中位(wei)機(ji)(ji)能只(zhi)有O型(xing)（Rexroth產品(pin)的E型(xing)）。 5.閥(fa)的額(e)定壓降不同。 電氣(qi)(qi)比(bi)例閥(fa)(fa)自動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)可分(fen)成斷(duan)續控(kong)(kong)(kong)(kong)制(zhi)和(he)連(lian)續控(kong)(kong)(kong)(kong)制(zhi)。斷(duan)續控(kong)(kong)(kong)(kong)制(zhi)即(ji)開(kai)關(guan)控(kong)(kong)(kong)(kong)制(zhi)。氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)系(xi)統中使用動(dong)(dong)作(zuo)頻率較(jiao)低的(de)(de)開(kai)關(guan)式(ON-OFF)的(de)(de)換(huan)向閥(fa)(fa)來控(kong)(kong)(kong)(kong)制(zhi)氣(qi)(qi)路的(de)(de)通(tong)斷(duan)。靠(kao)減(jian)壓(ya)閥(fa)(fa)來調節(jie)所(suo)需(xu)要(yao)(yao)(yao)的(de)(de)壓(ya)力，靠(kao)節(jie)流閥(fa)(fa)來調節(jie)所(suo)需(xu)要(yao)(yao)(yao)的(de)(de)流量(liang)。這種(zhong)傳統的(de)(de)氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)系(xi)統要(yao)(yao)(yao)想要(yao)(yao)(yao)有多(duo)(duo)個(ge)(ge)輸(shu)(shu)出力和(he)多(duo)(duo)個(ge)(ge)運(yun)動(dong)(dong)速(su)度(du)，就(jiu)需(xu)要(yao)(yao)(yao)多(duo)(duo)個(ge)(ge)減(jian)壓(ya)閥(fa)(fa)、節(jie)流閥(fa)(fa)及換(huan)向閥(fa)(fa)。這樣，不僅元(yuan)件需(xu)要(yao)(yao)(yao)多(duo)(duo)，成本高，構成系(xi)統復雜(za)，且許(xu)多(duo)(duo)元(yuan)件都需(xu)要(yao)(yao)(yao)預先進行人工調節(jie)。電氣(qi)(qi)比(bi)例閥(fa)(fa)控(kong)(kong)(kong)(kong)制(zhi)屬于連(lian)續控(kong)(kong)(kong)(kong)制(zhi)，其特(te)點是(shi)輸(shu)(shu)出量(liang)隨輸(shu)(shu)入(ru)量(liang)的(de)(de)變(bian)化而(er)變(bian)化，輸(shu)(shu)出量(liang)與輸(shu)(shu)入(ru)量(liang)之間(jian)存在一定的(de)(de)比(bi)例關(guan)系(xi)。比(bi)例控(kong)(kong)(kong)(kong)制(zhi)有開(kai)環(huan)(huan)控(kong)(kong)(kong)(kong)制(zhi)和(he)閉環(huan)(huan)控(kong)(kong)(kong)(kong)制(zhi)之分(fen)。 意大利ATOS比例閥型號(hao)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? |
