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(ci)鐵；伺服閥的驅(qu)動裝(zhuang)置是力馬(ma)達或力矩馬(ma)達； 2.性能參數不(bu)(bu)同。滯環(huan)、中位死(si)區、頻寬、過(guo)濾精度等特性不(bu)(bu)同，因此應用場合不(bu)(bu)同，伺(si)服閥(fa)和伺(si)服比(bi)例(li)(li)閥(fa)主要應用在閉環(huan)控(kong)制(zhi)系(xi)統，其它結構的比(bi)例(li)(li)閥(fa)主要應用在開環(huan)控(kong)系(xi)統及閉環(huan)速(su)度控(kong)制(zhi)系(xi)統； - 伺服閥(fa)中位(wei)沒(mei)有死區，比例閥(fa)有中位(wei)死區；
- 伺服閥的頻響（響應頻率(lv)）更高，可(ke)以高達200Hz左右，比例閥一(yi)般zui高幾十Hz；
- 伺服閥對液壓(ya)油(you)液的要(yao)求更(geng)高，需要(yao)精過濾(lv)才(cai)行，否則容易堵塞，比例(li)閥要(yao)求低(di)一些；
3.閥(fa)(fa)芯結構及加工精(jing)度不同。比(bi)例閥(fa)(fa)采用(yong)閥(fa)(fa)芯+閥(fa)(fa)體(ti)結構，閥(fa)(fa)體(ti)兼作閥(fa)(fa)套。伺服閥(fa)(fa)和伺服比(bi)例閥(fa)(fa)采用(yong)閥(fa)(fa)芯+閥(fa)(fa)套的結構。 4.中位機(ji)能種類(lei)不同。比例換向閥具有與普通(tong)換向閥相似的中位機(ji)能，而伺服閥中位機(ji)能只有O型（Rexroth產品(pin)的E型）。 5.閥的額定壓降(jiang)不(bu)同(tong)。 電氣(qi)比(bi)(bi)例閥(fa)(fa)自(zi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)可(ke)分(fen)成(cheng)斷(duan)續(xu)控(kong)(kong)(kong)制(zhi)(zhi)和(he)(he)連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)。斷(duan)續(xu)控(kong)(kong)(kong)制(zhi)(zhi)即(ji)開(kai)關控(kong)(kong)(kong)制(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)(tong)(tong)中使用動(dong)作頻(pin)率較低(di)的開(kai)關式(ON-OFF)的換向閥(fa)(fa)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)氣(qi)路(lu)的通斷(duan)。靠(kao)減壓(ya)閥(fa)(fa)來(lai)調(diao)節(jie)所需(xu)(xu)要(yao)的壓(ya)力，靠(kao)節(jie)流(liu)(liu)閥(fa)(fa)來(lai)調(diao)節(jie)所需(xu)(xu)要(yao)的流(liu)(liu)量(liang)。這種傳統(tong)(tong)(tong)的氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)(tong)(tong)要(yao)想要(yao)有多(duo)(duo)個(ge)(ge)輸(shu)(shu)(shu)出(chu)力和(he)(he)多(duo)(duo)個(ge)(ge)運動(dong)速度，就(jiu)需(xu)(xu)要(yao)多(duo)(duo)個(ge)(ge)減壓(ya)閥(fa)(fa)、節(jie)流(liu)(liu)閥(fa)(fa)及換向閥(fa)(fa)。這樣，不(bu)僅元(yuan)件需(xu)(xu)要(yao)多(duo)(duo)，成(cheng)本高，構成(cheng)系(xi)統(tong)(tong)(tong)復雜，且許多(duo)(duo)元(yuan)件都(dou)需(xu)(xu)要(yao)預先進行人工調(diao)節(jie)。電氣(qi)比(bi)(bi)例閥(fa)(fa)控(kong)(kong)(kong)制(zhi)(zhi)屬(shu)于連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)，其特(te)點是輸(shu)(shu)(shu)出(chu)量(liang)隨輸(shu)(shu)(shu)入(ru)量(liang)的變(bian)化(hua)而變(bian)化(hua)，輸(shu)(shu)(shu)出(chu)量(liang)與(yu)輸(shu)(shu)(shu)入(ru)量(liang)之間存在一定的比(bi)(bi)例關系(xi)。比(bi)(bi)例控(kong)(kong)(kong)制(zhi)(zhi)有開(kai)環控(kong)(kong)(kong)制(zhi)(zhi)和(he)(he)閉環控(kong)(kong)(kong)制(zhi)(zhi)之分(fen)。 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? |
