意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動裝(zhuang)置(zhi)(zhi)不同(tong)。比(bi)例閥的驅(qu)動裝(zhuang)置(zhi)(zhi)是(shi)比(bi)例電磁(ci)鐵；伺服閥的驅(qu)動裝(zhuang)置(zhi)(zhi)是(shi)力馬達或(huo)力矩馬達； 2.性能參數不(bu)同。滯環、中(zhong)位死區、頻寬(kuan)、過濾精(jing)度等特(te)性不(bu)同，因此應用場合(he)不(bu)同，伺服閥和伺服比(bi)例(li)閥主(zhu)要應用在閉環控制系(xi)統，其(qi)它(ta)結(jie)構的比(bi)例(li)閥主(zhu)要應用在開(kai)環控系(xi)統及閉環速度控制系(xi)統； - 伺服閥(fa)中位(wei)(wei)沒(mei)有死區(qu)(qu)，比(bi)例閥(fa)有中位(wei)(wei)死區(qu)(qu)；
- 伺服閥的頻響（響應頻率(lv)）更高，可(ke)以高達200Hz左右，比例閥一般zui高幾十Hz；
- 伺服閥對液壓(ya)油液的要(yao)求(qiu)更高，需要(yao)精過濾才行，否(fou)則容易(yi)堵(du)塞，比例閥要(yao)求(qiu)低一些；
3.閥(fa)(fa)芯結(jie)構及加工精度不(bu)同。比(bi)(bi)例閥(fa)(fa)采用(yong)閥(fa)(fa)芯+閥(fa)(fa)體(ti)結(jie)構，閥(fa)(fa)體(ti)兼作閥(fa)(fa)套(tao)(tao)。伺服閥(fa)(fa)和(he)伺服比(bi)(bi)例閥(fa)(fa)采用(yong)閥(fa)(fa)芯+閥(fa)(fa)套(tao)(tao)的結(jie)構。 4.中(zhong)位(wei)機(ji)(ji)(ji)能種類不同。比例換向閥(fa)具有與普通(tong)換向閥(fa)相(xiang)似的中(zhong)位(wei)機(ji)(ji)(ji)能，而伺(si)服閥(fa)中(zhong)位(wei)機(ji)(ji)(ji)能只有O型（Rexroth產品的E型）。 5.閥的額定壓降不同。 電氣(qi)(qi)(qi)比例閥(fa)(fa)(fa)自(zi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)可分(fen)成斷(duan)續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)和連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)。斷(duan)續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)即開關(guan)(guan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)。氣(qi)(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)系統(tong)中使用動(dong)作頻(pin)率(lv)較低的(de)(de)(de)開關(guan)(guan)式(ON-OFF)的(de)(de)(de)換(huan)(huan)向(xiang)閥(fa)(fa)(fa)來(lai)控(kong)(kong)(kong)(kong)制(zhi)(zhi)氣(qi)(qi)(qi)路的(de)(de)(de)通斷(duan)。靠(kao)減(jian)壓(ya)閥(fa)(fa)(fa)來(lai)調節所需要(yao)(yao)的(de)(de)(de)壓(ya)力(li)，靠(kao)節流(liu)(liu)閥(fa)(fa)(fa)來(lai)調節所需要(yao)(yao)的(de)(de)(de)流(liu)(liu)量。這(zhe)種傳統(tong)的(de)(de)(de)氣(qi)(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)系統(tong)要(yao)(yao)想(xiang)要(yao)(yao)有多(duo)(duo)(duo)個(ge)輸(shu)(shu)出力(li)和多(duo)(duo)(duo)個(ge)運動(dong)速度(du)，就需要(yao)(yao)多(duo)(duo)(duo)個(ge)減(jian)壓(ya)閥(fa)(fa)(fa)、節流(liu)(liu)閥(fa)(fa)(fa)及(ji)換(huan)(huan)向(xiang)閥(fa)(fa)(fa)。這(zhe)樣，不僅元件需要(yao)(yao)多(duo)(duo)(duo)，成本高，構成系統(tong)復雜，且(qie)許多(duo)(duo)(duo)元件都需要(yao)(yao)預(yu)先進行人工調節。電氣(qi)(qi)(qi)比例閥(fa)(fa)(fa)控(kong)(kong)(kong)(kong)制(zhi)(zhi)屬于連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)，其特(te)點是輸(shu)(shu)出量隨輸(shu)(shu)入量的(de)(de)(de)變化而變化，輸(shu)(shu)出量與輸(shu)(shu)入量之間存(cun)在一定(ding)的(de)(de)(de)比例關(guan)(guan)系。比例控(kong)(kong)(kong)(kong)制(zhi)(zhi)有開環控(kong)(kong)(kong)(kong)制(zhi)(zhi)和閉環控(kong)(kong)(kong)(kong)制(zhi)(zhi)之分(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? |
