意大利ATOS比例閥主要體現在以下幾點： 1.驅動(dong)裝(zhuang)置(zhi)不(bu)同(tong)。比例閥的驅動(dong)裝(zhuang)置(zhi)是(shi)(shi)比例電磁鐵；伺服閥的驅動(dong)裝(zhuang)置(zhi)是(shi)(shi)力馬達或力矩馬達； 2.性能參數(shu)不(bu)同(tong)(tong)。滯環(huan)、中位死區(qu)、頻寬、過濾精度(du)等特性不(bu)同(tong)(tong)，因此應(ying)用場(chang)合(he)不(bu)同(tong)(tong)，伺服閥和(he)伺服比例閥主(zhu)要(yao)應(ying)用在閉(bi)環(huan)控制(zhi)系統(tong)，其它(ta)結構的比例閥主(zhu)要(yao)應(ying)用在開環(huan)控系統(tong)及閉(bi)環(huan)速(su)度(du)控制(zhi)系統(tong)； - 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(pin)響(xiang)（響(xiang)應頻(pin)率）更高(gao)(gao)，可以高(gao)(gao)達200Hz左右，比例閥一(yi)般zui高(gao)(gao)幾十Hz；
- 伺(si)服閥(fa)對液(ye)壓油液(ye)的(de)要求更高，需要精(jing)過濾才行，否則容易(yi)堵塞，比例閥(fa)要求低一些(xie)；
3.閥(fa)(fa)芯(xin)結(jie)構及(ji)加(jia)工精度(du)不同。比例(li)閥(fa)(fa)采用閥(fa)(fa)芯(xin)+閥(fa)(fa)體結(jie)構，閥(fa)(fa)體兼(jian)作閥(fa)(fa)套(tao)。伺服閥(fa)(fa)和伺服比例(li)閥(fa)(fa)采用閥(fa)(fa)芯(xin)+閥(fa)(fa)套(tao)的結(jie)構。 4.中(zhong)位(wei)機(ji)(ji)能(neng)種類(lei)不同。比例換向閥(fa)具有(you)與普(pu)通換向閥(fa)相(xiang)似的中(zhong)位(wei)機(ji)(ji)能(neng)，而伺服閥(fa)中(zhong)位(wei)機(ji)(ji)能(neng)只(zhi)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)比例閥自動(dong)控(kong)(kong)制(zhi)(zhi)可分(fen)(fen)成(cheng)斷續(xu)控(kong)(kong)制(zhi)(zhi)和連續(xu)控(kong)(kong)制(zhi)(zhi)。斷續(xu)控(kong)(kong)制(zhi)(zhi)即(ji)開關(guan)(guan)控(kong)(kong)制(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)制(zhi)(zhi)系(xi)(xi)(xi)統中使(shi)用動(dong)作頻率較低的(de)開關(guan)(guan)式(ON-OFF)的(de)換向(xiang)閥來(lai)(lai)控(kong)(kong)制(zhi)(zhi)氣(qi)路的(de)通斷。靠減(jian)壓(ya)閥來(lai)(lai)調節(jie)所需(xu)(xu)(xu)要(yao)(yao)的(de)壓(ya)力(li)，靠節(jie)流閥來(lai)(lai)調節(jie)所需(xu)(xu)(xu)要(yao)(yao)的(de)流量。這種(zhong)傳統的(de)氣(qi)動(dong)控(kong)(kong)制(zhi)(zhi)系(xi)(xi)(xi)統要(yao)(yao)想要(yao)(yao)有多(duo)(duo)個(ge)(ge)輸(shu)出力(li)和多(duo)(duo)個(ge)(ge)運動(dong)速(su)度(du)，就需(xu)(xu)(xu)要(yao)(yao)多(duo)(duo)個(ge)(ge)減(jian)壓(ya)閥、節(jie)流閥及換向(xiang)閥。這樣，不僅元(yuan)件需(xu)(xu)(xu)要(yao)(yao)多(duo)(duo)，成(cheng)本(ben)高，構(gou)成(cheng)系(xi)(xi)(xi)統復雜(za)，且許(xu)多(duo)(duo)元(yuan)件都需(xu)(xu)(xu)要(yao)(yao)預先進行人工調節(jie)。電氣(qi)比例閥控(kong)(kong)制(zhi)(zhi)屬于(yu)連續(xu)控(kong)(kong)制(zhi)(zhi)，其特(te)點是輸(shu)出量隨輸(shu)入(ru)量的(de)變(bian)化(hua)而變(bian)化(hua)，輸(shu)出量與輸(shu)入(ru)量之(zhi)間存在一(yi)定的(de)比例關(guan)(guan)系(xi)(xi)(xi)。比例控(kong)(kong)制(zhi)(zhi)有開環控(kong)(kong)制(zhi)(zhi)和閉環控(kong)(kong)制(zhi)(zhi)之(zhi)分(fen)(fen)。 意大利ATOS比例閥型(xing)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? |
