意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動(dong)(dong)裝置(zhi)不同。比例閥的(de)驅(qu)動(dong)(dong)裝置(zhi)是比例電(dian)磁鐵；伺(si)服閥的(de)驅(qu)動(dong)(dong)裝置(zhi)是力馬(ma)達(da)或力矩馬(ma)達(da)； 2.性能參數不同。滯環(huan)(huan)、中位死區、頻寬、過濾精(jing)度等(deng)特性不同，因此應用(yong)場合(he)不同，伺服(fu)閥(fa)和伺服(fu)比例閥(fa)主要(yao)應用(yong)在(zai)閉環(huan)(huan)控(kong)制系(xi)統(tong)，其它(ta)結構的比例閥(fa)主要(yao)應用(yong)在(zai)開(kai)環(huan)(huan)控(kong)系(xi)統(tong)及閉環(huan)(huan)速度控(kong)制系(xi)統(tong)； - 伺服閥中位(wei)沒有死區，比例(li)閥有中位(wei)死區；
- 伺服閥的(de)頻響（響應(ying)頻率）更高(gao)(gao)，可以高(gao)(gao)達(da)200Hz左(zuo)右，比例閥一般zui高(gao)(gao)幾十Hz；
- 伺服閥(fa)對(dui)液壓油液的(de)要求更高，需要精過濾才行，否(fou)則(ze)容易堵塞，比例閥(fa)要求低一些；
3.閥(fa)(fa)芯結構(gou)及加工精度不同。比例閥(fa)(fa)采(cai)用閥(fa)(fa)芯+閥(fa)(fa)體(ti)結構(gou)，閥(fa)(fa)體(ti)兼作閥(fa)(fa)套。伺服閥(fa)(fa)和伺服比例閥(fa)(fa)采(cai)用閥(fa)(fa)芯+閥(fa)(fa)套的結構(gou)。 4.中(zhong)位機能(neng)種類不同。比例換(huan)向(xiang)閥(fa)具有與普通(tong)換(huan)向(xiang)閥(fa)相似的(de)中(zhong)位機能(neng)，而(er)伺服閥(fa)中(zhong)位機能(neng)只有O型（Rexroth產(chan)品的(de)E型）。 5.閥的(de)額定壓降不同。 電氣(qi)比例(li)閥自動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可分成(cheng)斷續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和連(lian)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)(guan)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)中使用動(dong)作(zuo)頻率較低的(de)(de)(de)開關(guan)(guan)式(shi)(ON-OFF)的(de)(de)(de)換向(xiang)閥來控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣(qi)路的(de)(de)(de)通斷。靠減壓(ya)閥來調節所需要(yao)(yao)的(de)(de)(de)壓(ya)力，靠節流(liu)(liu)閥來調節所需要(yao)(yao)的(de)(de)(de)流(liu)(liu)量。這(zhe)種傳統(tong)的(de)(de)(de)氣(qi)動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)要(yao)(yao)想(xiang)要(yao)(yao)有多(duo)(duo)個輸出(chu)(chu)(chu)力和多(duo)(duo)個運動(dong)速度，就需要(yao)(yao)多(duo)(duo)個減壓(ya)閥、節流(liu)(liu)閥及換向(xiang)閥。這(zhe)樣，不僅元件(jian)需要(yao)(yao)多(duo)(duo)，成(cheng)本高，構(gou)成(cheng)系統(tong)復(fu)雜，且(qie)許多(duo)(duo)元件(jian)都需要(yao)(yao)預先進行(xing)人(ren)工調節。電氣(qi)比例(li)閥控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬于(yu)連(lian)續(xu)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)，其(qi)特點是輸出(chu)(chu)(chu)量隨輸入(ru)量的(de)(de)(de)變化(hua)而變化(hua)，輸出(chu)(chu)(chu)量與輸入(ru)量之間(jian)存在一定的(de)(de)(de)比例(li)關(guan)(guan)系。比例(li)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有開環(huan)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和閉環(huan)控(kong)(kong)制(zhi)(zhi)(zhi)(zhi)之分。 意大利ATOS比例閥型號(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? |
