意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動裝(zhuang)(zhuang)置(zhi)不同。比例(li)(li)閥(fa)的驅(qu)動裝(zhuang)(zhuang)置(zhi)是比例(li)(li)電磁鐵(tie)；伺服(fu)閥(fa)的驅(qu)動裝(zhuang)(zhuang)置(zhi)是力馬達或(huo)力矩馬達； 2.性能(neng)參數不(bu)(bu)同。滯(zhi)環(huan)(huan)、中位(wei)死區、頻寬、過濾精度(du)等特性不(bu)(bu)同，因此應(ying)(ying)用場合不(bu)(bu)同，伺(si)服閥和伺(si)服比例(li)閥主要應(ying)(ying)用在閉(bi)環(huan)(huan)控(kong)制系統(tong)，其它(ta)結構的比例(li)閥主要應(ying)(ying)用在開環(huan)(huan)控(kong)系統(tong)及(ji)閉(bi)環(huan)(huan)速度(du)控(kong)制系統(tong)； - 伺(si)服閥(fa)中位(wei)沒有(you)死區，比例閥(fa)有(you)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，比例閥一般zui高幾十Hz；
- 伺服閥(fa)對液(ye)(ye)壓油液(ye)(ye)的要(yao)求更高，需要(yao)精過濾才(cai)行(xing)，否則容易堵(du)塞，比例閥(fa)要(yao)求低一(yi)些；
3.閥(fa)(fa)(fa)芯結構(gou)及加工(gong)精度(du)不(bu)同。比例(li)(li)閥(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)體結構(gou)，閥(fa)(fa)(fa)體兼(jian)作閥(fa)(fa)(fa)套。伺服閥(fa)(fa)(fa)和伺服比例(li)(li)閥(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)套的(de)結構(gou)。 4.中位機(ji)能種(zhong)類不同。比(bi)例換向(xiang)閥具有(you)與普通換向(xiang)閥相似的中位機(ji)能，而(er)伺服(fu)閥中位機(ji)能只有(you)O型（Rexroth產品的E型）。 5.閥的(de)額定壓降不同。 電(dian)氣比(bi)(bi)例閥(fa)自(zi)動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分成(cheng)(cheng)斷續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和連續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開關(guan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統(tong)中(zhong)使用動(dong)作頻率較低的開關(guan)式(ON-OFF)的換向(xiang)閥(fa)來(lai)(lai)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣路(lu)的通斷。靠(kao)(kao)減壓(ya)閥(fa)來(lai)(lai)調(diao)節(jie)(jie)(jie)(jie)所需(xu)(xu)(xu)要(yao)(yao)的壓(ya)力(li)，靠(kao)(kao)節(jie)(jie)(jie)(jie)流閥(fa)來(lai)(lai)調(diao)節(jie)(jie)(jie)(jie)所需(xu)(xu)(xu)要(yao)(yao)的流量(liang)。這(zhe)種(zhong)傳統(tong)的氣動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統(tong)要(yao)(yao)想要(yao)(yao)有多(duo)個輸出(chu)力(li)和多(duo)個運動(dong)速(su)度，就需(xu)(xu)(xu)要(yao)(yao)多(duo)個減壓(ya)閥(fa)、節(jie)(jie)(jie)(jie)流閥(fa)及換向(xiang)閥(fa)。這(zhe)樣，不(bu)僅(jin)元(yuan)件需(xu)(xu)(xu)要(yao)(yao)多(duo)，成(cheng)(cheng)本高(gao)，構成(cheng)(cheng)系(xi)統(tong)復雜，且許多(duo)元(yuan)件都需(xu)(xu)(xu)要(yao)(yao)預先進行人工調(diao)節(jie)(jie)(jie)(jie)。電(dian)氣比(bi)(bi)例閥(fa)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于(yu)連續控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其特點是輸出(chu)量(liang)隨輸入量(liang)的變化而變化，輸出(chu)量(liang)與輸入量(liang)之間存(cun)在一定的比(bi)(bi)例關(guan)系(xi)。比(bi)(bi)例控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和閉(bi)環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(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? |
