意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)(qu)動裝置不同。比例(li)閥的(de)驅(qu)(qu)動裝置是比例(li)電磁鐵;伺服閥的(de)驅(qu)(qu)動裝置是力馬達或力矩(ju)馬達; 2.性能參(can)數不(bu)(bu)同。滯環(huan)、中(zhong)位死(si)區、頻寬、過濾精度(du)等特性不(bu)(bu)同,因此(ci)應(ying)用場合不(bu)(bu)同,伺(si)服閥(fa)和(he)伺(si)服比例(li)閥(fa)主(zhu)要應(ying)用在(zai)閉環(huan)控(kong)制系統,其(qi)它結(jie)構(gou)的比例(li)閥(fa)主(zhu)要應(ying)用在(zai)開環(huan)控(kong)系統及閉環(huan)速(su)度(du)控(kong)制系統; - 伺服閥中位沒有死區,比例閥有中位死區;
- 伺服(fu)閥(fa)的頻(pin)響(響應(ying)頻(pin)率)更高,可以高達200Hz左右,比例閥(fa)一(yi)般zui高幾十(shi)Hz;
- 伺服閥對液壓油(you)液的要求更高(gao),需要精過(guo)濾(lv)才(cai)行,否(fou)則(ze)容(rong)易堵塞(sai),比例(li)閥要求低一些;
3.閥(fa)芯結(jie)構及加工(gong)精度不同。比例閥(fa)采用閥(fa)芯+閥(fa)體結(jie)構,閥(fa)體兼(jian)作閥(fa)套。伺服閥(fa)和伺服比例閥(fa)采用閥(fa)芯+閥(fa)套的結(jie)構。 4.中(zhong)(zhong)位機能(neng)種類不同。比例換向閥具有(you)與普通(tong)換向閥相似的(de)中(zhong)(zhong)位機能(neng),而(er)伺(si)服閥中(zhong)(zhong)位機能(neng)只有(you)O型(Rexroth產品的(de)E型)。 5.閥(fa)的額定壓降不同。 電氣比例(li)閥(fa)自動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可(ke)分成斷續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和(he)連續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)即開關(guan)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)中使用動(dong)作(zuo)頻(pin)率(lv)較(jiao)低(di)的(de)(de)開關(guan)式(ON-OFF)的(de)(de)換(huan)(huan)向閥(fa)來(lai)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣路的(de)(de)通斷。靠減(jian)壓閥(fa)來(lai)調(diao)節所需(xu)要(yao)(yao)(yao)的(de)(de)壓力,靠節流閥(fa)來(lai)調(diao)節所需(xu)要(yao)(yao)(yao)的(de)(de)流量。這(zhe)種傳統(tong)的(de)(de)氣動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)要(yao)(yao)(yao)想(xiang)要(yao)(yao)(yao)有(you)多(duo)個(ge)輸出力和(he)多(duo)個(ge)運動(dong)速度,就需(xu)要(yao)(yao)(yao)多(duo)個(ge)減(jian)壓閥(fa)、節流閥(fa)及換(huan)(huan)向閥(fa)。這(zhe)樣,不(bu)僅元件(jian)需(xu)要(yao)(yao)(yao)多(duo),成本高,構成系統(tong)復雜,且(qie)許多(duo)元件(jian)都(dou)需(xu)要(yao)(yao)(yao)預(yu)先進行人工調(diao)節。電氣比例(li)閥(fa)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬于連續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi),其(qi)特點是輸出量隨(sui)輸入量的(de)(de)變化而變化,輸出量與輸入量之(zhi)間存在(zai)一定的(de)(de)比例(li)關(guan)系。比例(li)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有(you)開環控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和(he)閉(bi)環控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)之(zhi)分。 意大利ATOS比例閥型(xing)號(hao)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? |