意大利ATOS比例閥主要體現在以下幾點： 1.驅動(dong)裝置(zhi)不同。比例閥(fa)的驅動(dong)裝置(zhi)是(shi)比例電(dian)磁鐵(tie)；伺服(fu)閥(fa)的驅動(dong)裝置(zhi)是(shi)力馬達(da)或力矩(ju)馬達(da)； 2.性能參數不同。滯環(huan)、中位死區、頻寬、過濾精度(du)等(deng)特性不同，因此(ci)應用場合不同，伺服閥(fa)和伺服比(bi)例(li)閥(fa)主(zhu)要(yao)應用在閉(bi)環(huan)控(kong)制系(xi)(xi)統，其(qi)它結構的比(bi)例(li)閥(fa)主(zhu)要(yao)應用在開環(huan)控(kong)系(xi)(xi)統及閉(bi)環(huan)速度(du)控(kong)制系(xi)(xi)統； - 伺服閥中(zhong)位(wei)沒有(you)(you)死區，比例閥有(you)(you)中(zhong)位(wei)死區；
- 伺服閥的頻響(xiang)(xiang)（響(xiang)(xiang)應頻率(lv)）更(geng)高，可以(yi)高達200Hz左(zuo)右，比例閥一般zui高幾十Hz；
- 伺(si)服閥(fa)對液(ye)壓油液(ye)的要(yao)求更高，需要(yao)精過濾才行(xing)，否(fou)則容易堵(du)塞(sai)，比例閥(fa)要(yao)求低一些；
3.閥(fa)芯(xin)結(jie)構(gou)及(ji)加工精(jing)度不(bu)同。比例(li)閥(fa)采用(yong)閥(fa)芯(xin)+閥(fa)體(ti)結(jie)構(gou)，閥(fa)體(ti)兼作閥(fa)套。伺(si)服(fu)閥(fa)和伺(si)服(fu)比例(li)閥(fa)采用(yong)閥(fa)芯(xin)+閥(fa)套的結(jie)構(gou)。 4.中位(wei)(wei)機(ji)(ji)能種類(lei)不同。比例換向閥具有(you)與普通(tong)換向閥相(xiang)似的中位(wei)(wei)機(ji)(ji)能，而(er)伺服(fu)閥中位(wei)(wei)機(ji)(ji)能只有(you)O型（Rexroth產品的E型）。 5.閥的額(e)定(ding)壓降不同(tong)。 電氣(qi)比例閥(fa)(fa)(fa)自動控(kong)(kong)(kong)制(zhi)(zhi)(zhi)可(ke)分(fen)成(cheng)斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)(he)連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)即(ji)開(kai)關控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)動控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統中使用動作頻率較低的(de)開(kai)關式(shi)(ON-OFF)的(de)換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)來控(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)路的(de)通斷。靠減壓(ya)閥(fa)(fa)(fa)來調節所需要(yao)的(de)壓(ya)力，靠節流閥(fa)(fa)(fa)來調節所需要(yao)的(de)流量。這種傳(chuan)統的(de)氣(qi)動控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統要(yao)想要(yao)有(you)多(duo)個(ge)輸(shu)出(chu)力和(he)(he)多(duo)個(ge)運動速度，就需要(yao)多(duo)個(ge)減壓(ya)閥(fa)(fa)(fa)、節流閥(fa)(fa)(fa)及換(huan)向(xiang)(xiang)閥(fa)(fa)(fa)。這樣(yang)，不僅元(yuan)件需要(yao)多(duo)，成(cheng)本高，構(gou)成(cheng)系(xi)統復雜，且(qie)許多(duo)元(yuan)件都需要(yao)預先進(jin)行人工調節。電氣(qi)比例閥(fa)(fa)(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬(shu)于連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其特點是輸(shu)出(chu)量隨(sui)輸(shu)入(ru)(ru)量的(de)變化而(er)變化，輸(shu)出(chu)量與輸(shu)入(ru)(ru)量之(zhi)間(jian)存在一(yi)定(ding)的(de)比例關系(xi)。比例控(kong)(kong)(kong)制(zhi)(zhi)(zhi)有(you)開(kai)環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)(he)閉環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)之(zhi)分(fen)。 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? |
