意大利ATOS比例閥主要體現在以下幾點: 1.驅動裝置(zhi)不同。比例閥的(de)驅動裝置(zhi)是(shi)比例電(dian)磁鐵;伺服閥的(de)驅動裝置(zhi)是(shi)力(li)馬(ma)達(da)或(huo)力(li)矩馬(ma)達(da); 2.性(xing)能參數不(bu)(bu)同(tong)。滯環、中(zhong)位(wei)死(si)區、頻(pin)寬(kuan)、過濾精(jing)度等特(te)性(xing)不(bu)(bu)同(tong),因此應用(yong)場合不(bu)(bu)同(tong),伺服閥(fa)和伺服比(bi)例(li)閥(fa)主要應用(yong)在閉環控制系(xi)(xi)統(tong),其它(ta)結(jie)構(gou)的比(bi)例(li)閥(fa)主要應用(yong)在開(kai)環控系(xi)(xi)統(tong)及閉環速度控制系(xi)(xi)統(tong); - 伺服閥中位沒有死(si)區(qu),比(bi)例閥有中位死(si)區(qu);
- 伺服(fu)閥(fa)的頻響(響應頻率)更高(gao),可以高(gao)達200Hz左右,比例閥(fa)一般(ban)zui高(gao)幾十(shi)Hz;
- 伺服(fu)閥對液壓油(you)液的(de)要(yao)(yao)求更高,需(xu)要(yao)(yao)精過濾(lv)才行,否則容易堵塞,比例閥要(yao)(yao)求低一些;
3.閥(fa)芯(xin)結構(gou)及加工精度不同。比例(li)閥(fa)采用閥(fa)芯(xin)+閥(fa)體結構(gou),閥(fa)體兼作閥(fa)套。伺服閥(fa)和伺服比例(li)閥(fa)采用閥(fa)芯(xin)+閥(fa)套的(de)結構(gou)。 4.中(zhong)位(wei)機能(neng)種類不同。比例換(huan)向閥(fa)具有(you)與(yu)普通換(huan)向閥(fa)相(xiang)似的中(zhong)位(wei)機能(neng),而伺服閥(fa)中(zhong)位(wei)機能(neng)只有(you)O型(xing)(Rexroth產(chan)品(pin)的E型(xing))。 5.閥的額定壓降不同。 電氣(qi)比(bi)(bi)例(li)閥(fa)自動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)可分(fen)成(cheng)斷(duan)續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)和(he)連續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)。斷(duan)續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)即開關(guan)控(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)系統(tong)(tong)中(zhong)使用動(dong)作頻率較低的(de)(de)開關(guan)式(shi)(ON-OFF)的(de)(de)換(huan)向閥(fa)來(lai)控(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)路的(de)(de)通斷(duan)。靠減壓閥(fa)來(lai)調(diao)節(jie)所(suo)需要的(de)(de)壓力,靠節(jie)流(liu)閥(fa)來(lai)調(diao)節(jie)所(suo)需要的(de)(de)流(liu)量。這種傳統(tong)(tong)的(de)(de)氣(qi)動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)系統(tong)(tong)要想要有(you)多(duo)(duo)個(ge)(ge)輸出力和(he)多(duo)(duo)個(ge)(ge)運動(dong)速(su)度,就需要多(duo)(duo)個(ge)(ge)減壓閥(fa)、節(jie)流(liu)閥(fa)及換(huan)向閥(fa)。這樣(yang),不僅元件需要多(duo)(duo),成(cheng)本高,構成(cheng)系統(tong)(tong)復(fu)雜,且許多(duo)(duo)元件都需要預先進行人工調(diao)節(jie)。電氣(qi)比(bi)(bi)例(li)閥(fa)控(kong)(kong)制(zhi)(zhi)(zhi)屬于連續(xu)控(kong)(kong)制(zhi)(zhi)(zhi),其特點是輸出量隨(sui)輸入量的(de)(de)變化(hua)(hua)而變化(hua)(hua),輸出量與輸入量之間存在一(yi)定的(de)(de)比(bi)(bi)例(li)關(guan)系。比(bi)(bi)例(li)控(kong)(kong)制(zhi)(zhi)(zhi)有(you)開環控(kong)(kong)制(zhi)(zhi)(zhi)和(he)閉(bi)環控(kong)(kong)制(zhi)(zhi)(zhi)之分(fen)。 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? |