意大利ATOS比例閥主要體現在以下幾點： 1.驅動裝置不(bu)同。比例閥的驅動裝置是比例電(dian)磁鐵；伺(si)服閥的驅動裝置是力馬達(da)或(huo)力矩馬達(da)； 2.性能參(can)數不同(tong)(tong)。滯環(huan)、中位死區、頻寬、過濾精度(du)等特性不同(tong)(tong)，因此應(ying)用場合(he)不同(tong)(tong)，伺服閥和伺服比例(li)閥主要應(ying)用在閉(bi)環(huan)控制(zhi)系統(tong)，其它結構(gou)的比例(li)閥主要應(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)(you)死(si)區，比(bi)例閥有(you)(you)中位死(si)區；
- 伺服閥的頻響（響應頻率）更高，可以高達200Hz左右(you)，比例閥一般zui高幾十Hz；
- 伺(si)服閥對液壓油液的要求(qiu)更高，需要精過濾才行，否則容易堵塞(sai)，比例(li)閥要求(qiu)低一(yi)些；
3.閥(fa)(fa)芯(xin)結(jie)(jie)構(gou)及加(jia)工精度不同(tong)。比例(li)閥(fa)(fa)采(cai)用閥(fa)(fa)芯(xin)+閥(fa)(fa)體(ti)結(jie)(jie)構(gou)，閥(fa)(fa)體(ti)兼(jian)作閥(fa)(fa)套(tao)。伺服(fu)閥(fa)(fa)和伺服(fu)比例(li)閥(fa)(fa)采(cai)用閥(fa)(fa)芯(xin)+閥(fa)(fa)套(tao)的(de)結(jie)(jie)構(gou)。 4.中位機(ji)能種(zhong)類不同。比(bi)例換向閥具有與普通(tong)換向閥相似的中位機(ji)能，而伺(si)服閥中位機(ji)能只(zhi)有O型（Rexroth產品的E型）。 5.閥的額定壓(ya)降不同。 電氣(qi)比(bi)例(li)閥(fa)自動(dong)控(kong)(kong)(kong)(kong)制(zhi)可分成(cheng)斷續控(kong)(kong)(kong)(kong)制(zhi)和連續控(kong)(kong)(kong)(kong)制(zhi)。斷續控(kong)(kong)(kong)(kong)制(zhi)即開(kai)關控(kong)(kong)(kong)(kong)制(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)系(xi)(xi)(xi)統中(zhong)使(shi)用動(dong)作頻率較低的(de)開(kai)關式(ON-OFF)的(de)換向閥(fa)來(lai)控(kong)(kong)(kong)(kong)制(zhi)氣(qi)路的(de)通(tong)斷。靠減壓閥(fa)來(lai)調節所需(xu)要(yao)(yao)的(de)壓力(li)，靠節流閥(fa)來(lai)調節所需(xu)要(yao)(yao)的(de)流量(liang)。這種傳統的(de)氣(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)系(xi)(xi)(xi)統要(yao)(yao)想要(yao)(yao)有(you)多(duo)個輸出力(li)和多(duo)個運(yun)動(dong)速度，就需(xu)要(yao)(yao)多(duo)個減壓閥(fa)、節流閥(fa)及換向閥(fa)。這樣，不僅元件需(xu)要(yao)(yao)多(duo)，成(cheng)本高，構成(cheng)系(xi)(xi)(xi)統復雜，且許(xu)多(duo)元件都(dou)需(xu)要(yao)(yao)預先進行人工調節。電氣(qi)比(bi)例(li)閥(fa)控(kong)(kong)(kong)(kong)制(zhi)屬于連續控(kong)(kong)(kong)(kong)制(zhi)，其特點是輸出量(liang)隨輸入量(liang)的(de)變(bian)(bian)化而(er)變(bian)(bian)化，輸出量(liang)與輸入量(liang)之(zhi)間存在(zai)一(yi)定的(de)比(bi)例(li)關系(xi)(xi)(xi)。比(bi)例(li)控(kong)(kong)(kong)(kong)制(zhi)有(you)開(kai)環(huan)控(kong)(kong)(kong)(kong)制(zhi)和閉(bi)環(huan)控(kong)(kong)(kong)(kong)制(zhi)之(zhi)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? |
