意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動裝(zhuang)置不同(tong)。比(bi)例閥的驅(qu)動裝(zhuang)置是(shi)比(bi)例電(dian)磁鐵；伺(si)服(fu)閥的驅(qu)動裝(zhuang)置是(shi)力(li)馬達(da)或力(li)矩馬達(da)； 2.性(xing)(xing)能參(can)數不同(tong)。滯環(huan)、中位死區、頻(pin)寬、過濾精(jing)度等特性(xing)(xing)不同(tong)，因此應(ying)用場(chang)合(he)不同(tong)，伺服(fu)閥和伺服(fu)比例閥主要(yao)應(ying)用在(zai)閉環(huan)控制系統(tong)，其它(ta)結構的比例閥主要(yao)應(ying)用在(zai)開環(huan)控系統(tong)及閉環(huan)速度控制系統(tong)； - 伺服閥中(zhong)(zhong)位(wei)沒有死(si)區，比例(li)閥有中(zhong)(zhong)位(wei)死(si)區；
- 伺服閥的(de)頻(pin)(pin)響（響應頻(pin)(pin)率）更高(gao)，可(ke)以高(gao)達200Hz左右，比例閥一般zui高(gao)幾十Hz；
- 伺(si)服閥(fa)對液(ye)壓油液(ye)的要(yao)(yao)求(qiu)更高，需要(yao)(yao)精過(guo)濾(lv)才(cai)行，否則容(rong)易堵塞，比例(li)閥(fa)要(yao)(yao)求(qiu)低一(yi)些；
3.閥(fa)(fa)芯(xin)(xin)結構(gou)及加工精度不同。比(bi)例閥(fa)(fa)采用閥(fa)(fa)芯(xin)(xin)+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(bi)例閥(fa)(fa)采用閥(fa)(fa)芯(xin)(xin)+閥(fa)(fa)套的結構(gou)。 4.中位機(ji)能(neng)種類不同(tong)。比(bi)例換(huan)向(xiang)(xiang)閥(fa)(fa)具有與普(pu)通(tong)換(huan)向(xiang)(xiang)閥(fa)(fa)相似的(de)中位機(ji)能(neng)，而伺服閥(fa)(fa)中位機(ji)能(neng)只(zhi)有O型（Rexroth產品的(de)E型）。 5.閥的額定(ding)壓降不同。 電(dian)氣(qi)(qi)比例閥(fa)自動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可(ke)分(fen)成(cheng)(cheng)斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和連(lian)續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開(kai)(kai)關控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統中使用動(dong)作(zuo)頻率較低的開(kai)(kai)關式(ON-OFF)的換向閥(fa)來控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)(qi)路(lu)的通斷。靠減壓閥(fa)來調(diao)節(jie)(jie)所需(xu)要(yao)(yao)的壓力(li)，靠節(jie)(jie)流(liu)閥(fa)來調(diao)節(jie)(jie)所需(xu)要(yao)(yao)的流(liu)量(liang)。這種(zhong)傳統的氣(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統要(yao)(yao)想要(yao)(yao)有(you)多(duo)個(ge)輸(shu)出(chu)力(li)和多(duo)個(ge)運動(dong)速度，就(jiu)需(xu)要(yao)(yao)多(duo)個(ge)減壓閥(fa)、節(jie)(jie)流(liu)閥(fa)及換向閥(fa)。這樣(yang)，不僅(jin)元件(jian)需(xu)要(yao)(yao)多(duo)，成(cheng)(cheng)本高，構成(cheng)(cheng)系(xi)統復雜，且許(xu)多(duo)元件(jian)都需(xu)要(yao)(yao)預先進行人工調(diao)節(jie)(jie)。電(dian)氣(qi)(qi)比例閥(fa)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連(lian)續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其特點是輸(shu)出(chu)量(liang)隨輸(shu)入量(liang)的變化而變化，輸(shu)出(chu)量(liang)與輸(shu)入量(liang)之(zhi)間存(cun)在(zai)一(yi)定(ding)的比例關系(xi)。比例控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有(you)開(kai)(kai)環(huan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和閉環(huan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)之(zhi)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? |
