意大利ATOS比例閥主要體現在以下幾點： 1.驅動裝(zhuang)置(zhi)不同。比(bi)(bi)例閥(fa)的(de)驅動裝(zhuang)置(zhi)是(shi)比(bi)(bi)例電磁(ci)鐵；伺(si)服(fu)閥(fa)的(de)驅動裝(zhuang)置(zhi)是(shi)力馬達或力矩馬達； 2.性能參數不同。滯(zhi)環(huan)、中(zhong)位死區、頻寬、過濾(lv)精(jing)度等特性不同，因此應用場合不同，伺服閥和伺服比例(li)閥主要(yao)應用在(zai)(zai)閉(bi)環(huan)控(kong)制(zhi)系統(tong)，其它結構的(de)比例(li)閥主要(yao)應用在(zai)(zai)開環(huan)控(kong)系統(tong)及閉(bi)環(huan)速度控(kong)制(zhi)系統(tong)； - 伺(si)服閥中位沒有死區(qu)，比例(li)閥有中位死區(qu)；
- 伺服(fu)閥的頻響(xiang)（響(xiang)應頻率(lv)）更高(gao)，可以高(gao)達200Hz左右，比例閥一般(ban)zui高(gao)幾十(shi)Hz；
- 伺服閥對液壓油液的要求更(geng)高，需要精過(guo)濾才行，否則容易堵塞，比(bi)例閥要求低(di)一些(xie)；
3.閥(fa)(fa)芯結構及加工(gong)精度(du)不(bu)同。比例閥(fa)(fa)采(cai)用閥(fa)(fa)芯+閥(fa)(fa)體結構，閥(fa)(fa)體兼(jian)作閥(fa)(fa)套。伺(si)服閥(fa)(fa)和(he)伺(si)服比例閥(fa)(fa)采(cai)用閥(fa)(fa)芯+閥(fa)(fa)套的結構。 4.中(zhong)位(wei)機能(neng)種類不同(tong)。比(bi)例換(huan)(huan)向閥具(ju)有與(yu)普通換(huan)(huan)向閥相(xiang)似的中(zhong)位(wei)機能(neng)，而伺服閥中(zhong)位(wei)機能(neng)只有O型(xing)(xing)（Rexroth產品(pin)的E型(xing)(xing)）。 5.閥的額定(ding)壓降不同。 電(dian)氣(qi)(qi)比(bi)例(li)閥(fa)(fa)(fa)(fa)自動控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)可分成斷(duan)續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)和(he)連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)。斷(duan)續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)即開關控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)。氣(qi)(qi)動控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)系(xi)(xi)統(tong)中使(shi)用動作(zuo)頻率(lv)較低的(de)(de)開關式(ON-OFF)的(de)(de)換(huan)向閥(fa)(fa)(fa)(fa)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)氣(qi)(qi)路的(de)(de)通斷(duan)。靠減壓(ya)閥(fa)(fa)(fa)(fa)來(lai)調(diao)節所需要(yao)(yao)的(de)(de)壓(ya)力，靠節流閥(fa)(fa)(fa)(fa)來(lai)調(diao)節所需要(yao)(yao)的(de)(de)流量(liang)(liang)。這(zhe)種傳統(tong)的(de)(de)氣(qi)(qi)動控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)系(xi)(xi)統(tong)要(yao)(yao)想要(yao)(yao)有多(duo)個(ge)輸出力和(he)多(duo)個(ge)運動速度，就(jiu)需要(yao)(yao)多(duo)個(ge)減壓(ya)閥(fa)(fa)(fa)(fa)、節流閥(fa)(fa)(fa)(fa)及換(huan)向閥(fa)(fa)(fa)(fa)。這(zhe)樣(yang)，不僅(jin)元件需要(yao)(yao)多(duo)，成本高，構成系(xi)(xi)統(tong)復雜，且許多(duo)元件都需要(yao)(yao)預(yu)先進行人工(gong)調(diao)節。電(dian)氣(qi)(qi)比(bi)例(li)閥(fa)(fa)(fa)(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)屬于連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)，其特點是輸出量(liang)(liang)隨輸入量(liang)(liang)的(de)(de)變化而變化，輸出量(liang)(liang)與輸入量(liang)(liang)之(zhi)間存(cun)在一定的(de)(de)比(bi)例(li)關系(xi)(xi)。比(bi)例(li)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)有開環控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)和(he)閉(bi)環控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)之(zhi)分。 意大利ATOS比例閥型(xing)號表(biao)： 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? |
