意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動(dong)裝置(zhi)不同。比(bi)例(li)閥的驅(qu)動(dong)裝置(zhi)是比(bi)例(li)電磁鐵；伺服(fu)閥的驅(qu)動(dong)裝置(zhi)是力馬(ma)達或力矩馬(ma)達； 2.性能參數不(bu)同(tong)。滯環、中位死區、頻(pin)寬(kuan)、過濾精度等特性不(bu)同(tong)，因此應用(yong)場合不(bu)同(tong)，伺服(fu)閥和(he)伺服(fu)比例(li)閥主(zhu)要應用(yong)在閉環控(kong)制系統，其它結構的比例(li)閥主(zhu)要應用(yong)在開環控(kong)系統及閉環速度控(kong)制系統； - 伺(si)服閥中位沒有死區，比例閥有中位死區；
- 伺服閥(fa)的頻響(xiang)（響(xiang)應(ying)頻率）更高，可(ke)以(yi)高達200Hz左(zuo)右，比例閥(fa)一(yi)般zui高幾十Hz；
- 伺服閥對(dui)液壓油液的要求更(geng)高，需要精(jing)過濾才(cai)行，否則容易堵塞，比例(li)閥要求低一些；
3.閥(fa)芯結構及(ji)加工(gong)精度(du)不同。比例閥(fa)采(cai)(cai)用閥(fa)芯+閥(fa)體結構，閥(fa)體兼作閥(fa)套。伺(si)服閥(fa)和伺(si)服比例閥(fa)采(cai)(cai)用閥(fa)芯+閥(fa)套的結構。 4.中(zhong)(zhong)位(wei)(wei)機(ji)能(neng)(neng)種類不同。比(bi)例(li)換(huan)向閥(fa)(fa)具有(you)與普通換(huan)向閥(fa)(fa)相似的(de)中(zhong)(zhong)位(wei)(wei)機(ji)能(neng)(neng)，而伺服(fu)閥(fa)(fa)中(zhong)(zhong)位(wei)(wei)機(ji)能(neng)(neng)只有(you)O型（Rexroth產品(pin)的(de)E型）。 5.閥的額定壓(ya)降不同。 電(dian)氣比(bi)(bi)例(li)閥(fa)(fa)自動(dong)控(kong)(kong)(kong)(kong)制可分成(cheng)斷續控(kong)(kong)(kong)(kong)制和連(lian)續控(kong)(kong)(kong)(kong)制。斷續控(kong)(kong)(kong)(kong)制即開(kai)關控(kong)(kong)(kong)(kong)制。氣動(dong)控(kong)(kong)(kong)(kong)制系(xi)統(tong)(tong)中(zhong)使用動(dong)作(zuo)頻率較低(di)的(de)(de)(de)開(kai)關式(ON-OFF)的(de)(de)(de)換向閥(fa)(fa)來控(kong)(kong)(kong)(kong)制氣路的(de)(de)(de)通斷。靠(kao)減壓(ya)閥(fa)(fa)來調節所(suo)(suo)需要(yao)的(de)(de)(de)壓(ya)力，靠(kao)節流(liu)閥(fa)(fa)來調節所(suo)(suo)需要(yao)的(de)(de)(de)流(liu)量(liang)。這種傳統(tong)(tong)的(de)(de)(de)氣動(dong)控(kong)(kong)(kong)(kong)制系(xi)統(tong)(tong)要(yao)想要(yao)有多(duo)個(ge)輸(shu)出(chu)力和多(duo)個(ge)運(yun)動(dong)速度，就需要(yao)多(duo)個(ge)減壓(ya)閥(fa)(fa)、節流(liu)閥(fa)(fa)及換向閥(fa)(fa)。這樣，不僅元件需要(yao)多(duo)，成(cheng)本高，構成(cheng)系(xi)統(tong)(tong)復雜，且許(xu)多(duo)元件都需要(yao)預先進行人工調節。電(dian)氣比(bi)(bi)例(li)閥(fa)(fa)控(kong)(kong)(kong)(kong)制屬于連(lian)續控(kong)(kong)(kong)(kong)制，其(qi)特點是輸(shu)出(chu)量(liang)隨輸(shu)入量(liang)的(de)(de)(de)變(bian)化(hua)而變(bian)化(hua)，輸(shu)出(chu)量(liang)與輸(shu)入量(liang)之(zhi)(zhi)間存在一定的(de)(de)(de)比(bi)(bi)例(li)關系(xi)。比(bi)(bi)例(li)控(kong)(kong)(kong)(kong)制有開(kai)環控(kong)(kong)(kong)(kong)制和閉環控(kong)(kong)(kong)(kong)制之(zhi)(zhi)分。 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? |
