意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動(dong)裝(zhuang)置不同。比(bi)(bi)例閥(fa)的(de)驅(qu)動(dong)裝(zhuang)置是(shi)比(bi)(bi)例電磁鐵(tie)；伺(si)服閥(fa)的(de)驅(qu)動(dong)裝(zhuang)置是(shi)力馬達或(huo)力矩馬達； 2.性能參數(shu)不(bu)同(tong)。滯(zhi)環(huan)(huan)、中位死區、頻寬(kuan)、過濾精(jing)度等特性不(bu)同(tong)，因此(ci)應用場合(he)不(bu)同(tong)，伺服閥(fa)和伺服比例閥(fa)主要(yao)應用在(zai)閉(bi)環(huan)(huan)控制系統(tong)(tong)，其(qi)它結構(gou)的比例閥(fa)主要(yao)應用在(zai)開環(huan)(huan)控系統(tong)(tong)及閉(bi)環(huan)(huan)速度控制系統(tong)(tong)； - 伺(si)服閥中位沒(mei)有(you)死區(qu)，比例閥有(you)中位死區(qu)；
- 伺服(fu)閥(fa)的頻響（響應頻率(lv)）更高(gao)(gao)，可以(yi)高(gao)(gao)達200Hz左右，比(bi)例閥(fa)一般(ban)zui高(gao)(gao)幾十Hz；
- 伺服(fu)閥對液(ye)壓(ya)油(you)液(ye)的要求(qiu)更高(gao)，需(xu)要精過濾才行(xing)，否則容(rong)易堵(du)塞，比例閥要求(qiu)低一些；
3.閥芯(xin)(xin)結(jie)(jie)構(gou)及加工精度不同。比(bi)例(li)閥采用閥芯(xin)(xin)+閥體結(jie)(jie)構(gou)，閥體兼作閥套(tao)。伺(si)服閥和伺(si)服比(bi)例(li)閥采用閥芯(xin)(xin)+閥套(tao)的結(jie)(jie)構(gou)。 4.中(zhong)位機(ji)能(neng)種類不同(tong)。比(bi)例換向閥具有與普通換向閥相似的(de)中(zhong)位機(ji)能(neng)，而伺服(fu)閥中(zhong)位機(ji)能(neng)只(zhi)有O型（Rexroth產(chan)品(pin)的(de)E型）。 5.閥的(de)額(e)定壓降(jiang)不同。 電氣比(bi)例(li)閥自動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可分成(cheng)斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和(he)連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)即開(kai)關(guan)(guan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)中使用(yong)動(dong)(dong)作(zuo)頻率較(jiao)低(di)的(de)(de)開(kai)關(guan)(guan)式(ON-OFF)的(de)(de)換(huan)(huan)向(xiang)閥來(lai)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣路的(de)(de)通斷。靠減壓閥來(lai)調(diao)節(jie)所(suo)需(xu)(xu)要(yao)的(de)(de)壓力(li)，靠節(jie)流閥來(lai)調(diao)節(jie)所(suo)需(xu)(xu)要(yao)的(de)(de)流量(liang)。這(zhe)種傳統(tong)的(de)(de)氣動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)要(yao)想要(yao)有多(duo)個輸(shu)出(chu)力(li)和(he)多(duo)個運動(dong)(dong)速(su)度，就需(xu)(xu)要(yao)多(duo)個減壓閥、節(jie)流閥及換(huan)(huan)向(xiang)閥。這(zhe)樣，不僅(jin)元(yuan)件需(xu)(xu)要(yao)多(duo)，成(cheng)本高，構(gou)成(cheng)系統(tong)復雜，且許多(duo)元(yuan)件都需(xu)(xu)要(yao)預先進行(xing)人工調(diao)節(jie)。電氣比(bi)例(li)閥控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬于連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)，其特(te)點是輸(shu)出(chu)量(liang)隨輸(shu)入量(liang)的(de)(de)變化而變化，輸(shu)出(chu)量(liang)與輸(shu)入量(liang)之間(jian)存在一定的(de)(de)比(bi)例(li)關(guan)(guan)系。比(bi)例(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有開(kai)環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和(he)閉環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)之分。 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? |
