意大利ATOS比例閥主要體現在以下幾點: 1.驅動(dong)(dong)裝(zhuang)置不同(tong)。比例閥(fa)的(de)驅動(dong)(dong)裝(zhuang)置是比例電磁(ci)鐵;伺服閥(fa)的(de)驅動(dong)(dong)裝(zhuang)置是力馬達或(huo)力矩(ju)馬達; 2.性(xing)能參數(shu)不同。滯環(huan)、中位死區、頻寬、過濾精(jing)度(du)等特(te)性(xing)不同,因此應(ying)用場合不同,伺服閥和伺服比例閥主(zhu)要(yao)應(ying)用在閉(bi)環(huan)控制(zhi)(zhi)系統,其(qi)它結(jie)構(gou)的比例閥主(zhu)要(yao)應(ying)用在開環(huan)控系統及閉(bi)環(huan)速(su)度(du)控制(zhi)(zhi)系統; - 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(響應頻率)更高,可以高達200Hz左右,比例閥一般zui高幾(ji)十Hz;
- 伺服(fu)閥對液壓油液的要求(qiu)(qiu)更高,需要精過濾才行(xing),否則容(rong)易(yi)堵塞,比例閥要求(qiu)(qiu)低一些;
3.閥(fa)芯(xin)結構(gou)及加工精(jing)度不同。比例閥(fa)采用閥(fa)芯(xin)+閥(fa)體結構(gou),閥(fa)體兼作閥(fa)套。伺(si)服閥(fa)和伺(si)服比例閥(fa)采用閥(fa)芯(xin)+閥(fa)套的結構(gou)。 4.中(zhong)位機(ji)能(neng)(neng)種類(lei)不同。比例(li)換向閥具(ju)有(you)與普通換向閥相似的(de)(de)中(zhong)位機(ji)能(neng)(neng),而(er)伺服閥中(zhong)位機(ji)能(neng)(neng)只有(you)O型(Rexroth產(chan)品的(de)(de)E型)。 5.閥的額定壓降(jiang)不(bu)同。 電(dian)氣(qi)(qi)比(bi)例閥(fa)自動(dong)控(kong)制(zhi)(zhi)(zhi)(zhi)可分(fen)成(cheng)斷(duan)(duan)續(xu)控(kong)制(zhi)(zhi)(zhi)(zhi)和連續(xu)控(kong)制(zhi)(zhi)(zhi)(zhi)。斷(duan)(duan)續(xu)控(kong)制(zhi)(zhi)(zhi)(zhi)即開關(guan)控(kong)制(zhi)(zhi)(zhi)(zhi)。氣(qi)(qi)動(dong)控(kong)制(zhi)(zhi)(zhi)(zhi)系(xi)統中使用動(dong)作頻(pin)率(lv)較低的(de)開關(guan)式(ON-OFF)的(de)換向閥(fa)來(lai)控(kong)制(zhi)(zhi)(zhi)(zhi)氣(qi)(qi)路的(de)通斷(duan)(duan)。靠減壓(ya)閥(fa)來(lai)調節(jie)(jie)所(suo)需(xu)(xu)要的(de)壓(ya)力,靠節(jie)(jie)流(liu)(liu)閥(fa)來(lai)調節(jie)(jie)所(suo)需(xu)(xu)要的(de)流(liu)(liu)量(liang)(liang)(liang)。這(zhe)種傳統的(de)氣(qi)(qi)動(dong)控(kong)制(zhi)(zhi)(zhi)(zhi)系(xi)統要想要有(you)多個(ge)輸(shu)(shu)出(chu)力和多個(ge)運動(dong)速(su)度,就(jiu)需(xu)(xu)要多個(ge)減壓(ya)閥(fa)、節(jie)(jie)流(liu)(liu)閥(fa)及換向閥(fa)。這(zhe)樣(yang),不(bu)僅(jin)元(yuan)件(jian)需(xu)(xu)要多,成(cheng)本高,構成(cheng)系(xi)統復雜(za),且許多元(yuan)件(jian)都需(xu)(xu)要預先進行人工(gong)調節(jie)(jie)。電(dian)氣(qi)(qi)比(bi)例閥(fa)控(kong)制(zhi)(zhi)(zhi)(zhi)屬于連續(xu)控(kong)制(zhi)(zhi)(zhi)(zhi),其特(te)點是(shi)輸(shu)(shu)出(chu)量(liang)(liang)(liang)隨輸(shu)(shu)入量(liang)(liang)(liang)的(de)變化(hua)而(er)變化(hua),輸(shu)(shu)出(chu)量(liang)(liang)(liang)與輸(shu)(shu)入量(liang)(liang)(liang)之間存在一定(ding)的(de)比(bi)例關(guan)系(xi)。比(bi)例控(kong)制(zhi)(zhi)(zhi)(zhi)有(you)開環控(kong)制(zhi)(zhi)(zhi)(zhi)和閉環控(kong)制(zhi)(zhi)(zhi)(zhi)之分(fen)。 意大利ATOS比例閥型(xing)號(hao)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? |