意大利ATOS比例閥主要體現在以下幾點: 1.驅動裝置不同。比例閥(fa)的驅動裝置是比例電磁鐵(tie);伺服閥(fa)的驅動裝置是力馬(ma)達或(huo)力矩馬(ma)達; 2.性能參數不(bu)同(tong)(tong)。滯(zhi)環(huan)、中位死區、頻寬、過濾精度等特性不(bu)同(tong)(tong),因此應用場合不(bu)同(tong)(tong),伺服閥(fa)和伺服比例(li)閥(fa)主要應用在閉環(huan)控(kong)制系統(tong),其它(ta)結構的比例(li)閥(fa)主要應用在開環(huan)控(kong)系統(tong)及閉環(huan)速度控(kong)制系統(tong); - 伺服閥(fa)中位(wei)(wei)沒有死(si)區,比例閥(fa)有中位(wei)(wei)死(si)區;
- 伺服閥的頻(pin)響(響應(ying)頻(pin)率)更高,可以(yi)高達(da)200Hz左右,比例閥一(yi)般(ban)zui高幾十Hz;
- 伺服(fu)閥(fa)對液(ye)壓油液(ye)的要求更高,需(xu)要精過(guo)濾才行(xing),否(fou)則容易(yi)堵塞(sai),比例閥(fa)要求低一些;
3.閥(fa)(fa)(fa)(fa)芯(xin)結構及加工精度(du)不同。比例閥(fa)(fa)(fa)(fa)采(cai)用(yong)閥(fa)(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)(fa)體(ti)結構,閥(fa)(fa)(fa)(fa)體(ti)兼作(zuo)閥(fa)(fa)(fa)(fa)套(tao)。伺服(fu)閥(fa)(fa)(fa)(fa)和伺服(fu)比例閥(fa)(fa)(fa)(fa)采(cai)用(yong)閥(fa)(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)(fa)套(tao)的結構。 4.中(zhong)位(wei)(wei)機(ji)能(neng)種類(lei)不同。比例換(huan)向閥(fa)(fa)具(ju)有(you)與普通換(huan)向閥(fa)(fa)相似的中(zhong)位(wei)(wei)機(ji)能(neng),而伺服閥(fa)(fa)中(zhong)位(wei)(wei)機(ji)能(neng)只有(you)O型(xing)(Rexroth產(chan)品的E型(xing))。 5.閥的額定壓降(jiang)不同。 電(dian)氣比例閥(fa)(fa)(fa)(fa)(fa)自動(dong)控(kong)(kong)制(zhi)(zhi)可分成(cheng)斷續(xu)控(kong)(kong)制(zhi)(zhi)和連續(xu)控(kong)(kong)制(zhi)(zhi)。斷續(xu)控(kong)(kong)制(zhi)(zhi)即開關控(kong)(kong)制(zhi)(zhi)。氣動(dong)控(kong)(kong)制(zhi)(zhi)系(xi)統(tong)(tong)中使用動(dong)作頻率(lv)較低(di)的(de)開關式(ON-OFF)的(de)換向(xiang)閥(fa)(fa)(fa)(fa)(fa)來控(kong)(kong)制(zhi)(zhi)氣路(lu)的(de)通斷。靠減(jian)壓(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)來調節所(suo)需要(yao)(yao)的(de)壓(ya)(ya)力,靠節流(liu)閥(fa)(fa)(fa)(fa)(fa)來調節所(suo)需要(yao)(yao)的(de)流(liu)量(liang)(liang)。這(zhe)(zhe)種傳統(tong)(tong)的(de)氣動(dong)控(kong)(kong)制(zhi)(zhi)系(xi)統(tong)(tong)要(yao)(yao)想要(yao)(yao)有(you)多(duo)(duo)個輸(shu)出力和多(duo)(duo)個運動(dong)速度,就(jiu)需要(yao)(yao)多(duo)(duo)個減(jian)壓(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)、節流(liu)閥(fa)(fa)(fa)(fa)(fa)及換向(xiang)閥(fa)(fa)(fa)(fa)(fa)。這(zhe)(zhe)樣(yang),不(bu)僅元件需要(yao)(yao)多(duo)(duo),成(cheng)本高,構成(cheng)系(xi)統(tong)(tong)復(fu)雜,且許(xu)多(duo)(duo)元件都需要(yao)(yao)預先進行人工(gong)調節。電(dian)氣比例閥(fa)(fa)(fa)(fa)(fa)控(kong)(kong)制(zhi)(zhi)屬于連續(xu)控(kong)(kong)制(zhi)(zhi),其(qi)特點是輸(shu)出量(liang)(liang)隨(sui)輸(shu)入量(liang)(liang)的(de)變化(hua)而變化(hua),輸(shu)出量(liang)(liang)與輸(shu)入量(liang)(liang)之間(jian)存在(zai)一定的(de)比例關系(xi)。比例控(kong)(kong)制(zhi)(zhi)有(you)開環控(kong)(kong)制(zhi)(zhi)和閉環控(kong)(kong)制(zhi)(zhi)之分。 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? |