意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)(qu)動裝(zhuang)置(zhi)不同。比例閥的驅(qu)(qu)動裝(zhuang)置(zhi)是比例電磁鐵；伺服閥的驅(qu)(qu)動裝(zhuang)置(zhi)是力馬(ma)達(da)(da)或(huo)力矩馬(ma)達(da)(da)； 2.性能參數(shu)不同。滯(zhi)環(huan)、中位死區(qu)、頻寬、過濾(lv)精度(du)等特性不同，因(yin)此應(ying)用場合不同，伺服閥(fa)和伺服比(bi)例閥(fa)主(zhu)要應(ying)用在(zai)閉環(huan)控(kong)制(zhi)系(xi)(xi)統，其它結構的比(bi)例閥(fa)主(zhu)要應(ying)用在(zai)開環(huan)控(kong)系(xi)(xi)統及閉環(huan)速度(du)控(kong)制(zhi)系(xi)(xi)統； - 伺服(fu)閥(fa)中(zhong)位沒有(you)死區(qu)，比例閥(fa)有(you)中(zhong)位死區(qu)；
- 伺服閥的頻(pin)響（響應頻(pin)率(lv)）更高(gao)，可以高(gao)達200Hz左右，比例閥一(yi)般(ban)zui高(gao)幾十Hz；
- 伺服閥對液壓油液的(de)要求(qiu)更(geng)高，需要精過濾(lv)才(cai)行，否則容(rong)易堵塞，比(bi)例閥要求(qiu)低(di)一些(xie)；
3.閥芯(xin)(xin)結構(gou)(gou)及加(jia)工精度不同。比(bi)例閥采(cai)用閥芯(xin)(xin)+閥體(ti)結構(gou)(gou)，閥體(ti)兼作(zuo)閥套。伺服閥和伺服比(bi)例閥采(cai)用閥芯(xin)(xin)+閥套的結構(gou)(gou)。 4.中位(wei)(wei)機能種(zhong)類不(bu)同。比例(li)換向(xiang)閥具有與普通換向(xiang)閥相似(si)的(de)中位(wei)(wei)機能，而伺服閥中位(wei)(wei)機能只有O型（Rexroth產品的(de)E型）。 5.閥(fa)的額定壓降不同。 電氣(qi)(qi)比(bi)例(li)閥(fa)(fa)自動(dong)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分(fen)成斷(duan)續控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和連(lian)續控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷(duan)續控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即(ji)開關(guan)(guan)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統(tong)(tong)中使用動(dong)作頻(pin)率(lv)較低(di)的(de)(de)(de)開關(guan)(guan)式(ON-OFF)的(de)(de)(de)換向閥(fa)(fa)來控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)(qi)路的(de)(de)(de)通(tong)斷(duan)。靠減壓閥(fa)(fa)來調節(jie)(jie)所需(xu)(xu)要(yao)的(de)(de)(de)壓力，靠節(jie)(jie)流(liu)閥(fa)(fa)來調節(jie)(jie)所需(xu)(xu)要(yao)的(de)(de)(de)流(liu)量(liang)(liang)。這種傳(chuan)統(tong)(tong)的(de)(de)(de)氣(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統(tong)(tong)要(yao)想要(yao)有(you)(you)多個輸(shu)出力和多個運動(dong)速(su)度，就需(xu)(xu)要(yao)多個減壓閥(fa)(fa)、節(jie)(jie)流(liu)閥(fa)(fa)及換向閥(fa)(fa)。這樣(yang)，不僅元件(jian)需(xu)(xu)要(yao)多，成本高，構成系統(tong)(tong)復雜(za)，且(qie)許多元件(jian)都需(xu)(xu)要(yao)預先進行人工調節(jie)(jie)。電氣(qi)(qi)比(bi)例(li)閥(fa)(fa)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連(lian)續控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其特(te)點是輸(shu)出量(liang)(liang)隨輸(shu)入量(liang)(liang)的(de)(de)(de)變(bian)化而變(bian)化，輸(shu)出量(liang)(liang)與輸(shu)入量(liang)(liang)之間存在一定的(de)(de)(de)比(bi)例(li)關(guan)(guan)系。比(bi)例(li)控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有(you)(you)開環控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和閉環控(kong)(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)之分(fen)。 意大利ATOS比例閥型(xing)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? |
