意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動(dong)裝置不同。比(bi)例閥的驅(qu)動(dong)裝置是比(bi)例電磁(ci)鐵；伺服閥的驅(qu)動(dong)裝置是力馬達或力矩馬達； 2.性能參數不(bu)(bu)同。滯環、中位死區、頻(pin)寬(kuan)、過濾精度等特性不(bu)(bu)同，因此應(ying)用場合不(bu)(bu)同，伺服(fu)閥和伺服(fu)比(bi)例閥主要應(ying)用在閉環控(kong)(kong)制系統(tong)，其它結(jie)構的(de)比(bi)例閥主要應(ying)用在開環控(kong)(kong)系統(tong)及閉環速度控(kong)(kong)制系統(tong)； - 伺服(fu)閥中位沒有(you)死區，比例閥有(you)中位死區；
- 伺服閥的頻響(xiang)（響(xiang)應(ying)頻率）更高(gao)，可以(yi)高(gao)達200Hz左(zuo)右，比例閥一般(ban)zui高(gao)幾十Hz；
- 伺(si)服閥對(dui)液(ye)壓油液(ye)的要(yao)求更高，需(xu)要(yao)精過濾(lv)才行，否則容易堵塞，比例閥要(yao)求低(di)一些；
3.閥(fa)(fa)(fa)芯結構及加工精(jing)度不同(tong)。比(bi)例(li)閥(fa)(fa)(fa)采用閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)體(ti)結構，閥(fa)(fa)(fa)體(ti)兼作閥(fa)(fa)(fa)套。伺服閥(fa)(fa)(fa)和(he)伺服比(bi)例(li)閥(fa)(fa)(fa)采用閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)套的結構。 4.中(zhong)(zhong)位(wei)機(ji)(ji)(ji)能種(zhong)類不(bu)同。比例換向閥具有與普通換向閥相似的(de)中(zhong)(zhong)位(wei)機(ji)(ji)(ji)能，而(er)伺服閥中(zhong)(zhong)位(wei)機(ji)(ji)(ji)能只有O型（Rexroth產品的(de)E型）。 5.閥的額定壓降(jiang)不同。 電氣(qi)比(bi)例(li)閥(fa)自動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)可(ke)分(fen)成斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開關(guan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)(xi)(xi)統(tong)中使用(yong)動(dong)作(zuo)頻率(lv)較低(di)的(de)開關(guan)式(ON-OFF)的(de)換向(xiang)閥(fa)來控(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)路的(de)通斷。靠減壓閥(fa)來調(diao)(diao)節(jie)(jie)所需(xu)(xu)要(yao)(yao)的(de)壓力(li)，靠節(jie)(jie)流閥(fa)來調(diao)(diao)節(jie)(jie)所需(xu)(xu)要(yao)(yao)的(de)流量(liang)。這種傳統(tong)的(de)氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)(xi)(xi)統(tong)要(yao)(yao)想(xiang)要(yao)(yao)有(you)(you)多(duo)個(ge)輸出力(li)和(he)多(duo)個(ge)運動(dong)速度，就(jiu)需(xu)(xu)要(yao)(yao)多(duo)個(ge)減壓閥(fa)、節(jie)(jie)流閥(fa)及(ji)換向(xiang)閥(fa)。這樣(yang)，不僅元件需(xu)(xu)要(yao)(yao)多(duo)，成本高，構成系(xi)(xi)(xi)統(tong)復(fu)雜，且許(xu)多(duo)元件都(dou)需(xu)(xu)要(yao)(yao)預先進行(xing)人(ren)工調(diao)(diao)節(jie)(jie)。電氣(qi)比(bi)例(li)閥(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其特點是輸出量(liang)隨輸入(ru)量(liang)的(de)變化而變化，輸出量(liang)與輸入(ru)量(liang)之間存在一定的(de)比(bi)例(li)關(guan)系(xi)(xi)(xi)。比(bi)例(li)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)有(you)(you)開環控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)閉環控(kong)(kong)(kong)制(zhi)(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? |
