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。比例閥(fa)的(de)驅(qu)動(dong)裝(zhuang)置是(shi)比例電磁鐵；伺服閥(fa)的(de)驅(qu)動(dong)裝(zhuang)置是(shi)力(li)馬達或力(li)矩馬達； 2.性能參數不(bu)同(tong)。滯(zhi)環(huan)、中位(wei)死區(qu)、頻寬、過濾精(jing)度等(deng)特性不(bu)同(tong)，因此應用場合不(bu)同(tong)，伺(si)服閥(fa)(fa)和伺(si)服比(bi)例閥(fa)(fa)主要應用在(zai)閉(bi)環(huan)控(kong)制(zhi)系(xi)統，其它結構的比(bi)例閥(fa)(fa)主要應用在(zai)開環(huan)控(kong)系(xi)統及閉(bi)環(huan)速度控(kong)制(zhi)系(xi)統； - 伺服閥中(zhong)位沒有死區，比例(li)閥有中(zhong)位死區；
- 伺服閥的頻(pin)響(xiang)（響(xiang)應頻(pin)率）更高(gao)，可以高(gao)達(da)200Hz左(zuo)右，比例閥一般(ban)zui高(gao)幾十(shi)Hz；
- 伺(si)服閥對(dui)液壓油液的要求(qiu)更高，需要精(jing)過濾才行，否則容易堵塞，比例閥要求(qiu)低(di)一些；
3.閥(fa)(fa)芯(xin)結(jie)構(gou)及加工精度不同。比例閥(fa)(fa)采用閥(fa)(fa)芯(xin)+閥(fa)(fa)體(ti)結(jie)構(gou)，閥(fa)(fa)體(ti)兼作閥(fa)(fa)套。伺(si)服閥(fa)(fa)和伺(si)服比例閥(fa)(fa)采用閥(fa)(fa)芯(xin)+閥(fa)(fa)套的結(jie)構(gou)。 4.中(zhong)位機(ji)(ji)能(neng)種類不同。比(bi)例換(huan)向閥具有與普通換(huan)向閥相(xiang)似的(de)中(zhong)位機(ji)(ji)能(neng)，而伺服(fu)閥中(zhong)位機(ji)(ji)能(neng)只有O型（Rexroth產品的(de)E型）。 5.閥的額定(ding)壓降不(bu)同。 電(dian)氣(qi)比例(li)閥(fa)自動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可分成斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)即開關控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統中使用(yong)動(dong)作(zuo)頻率(lv)較低的(de)開關式(ON-OFF)的(de)換向(xiang)(xiang)閥(fa)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣(qi)路的(de)通斷。靠(kao)減壓(ya)閥(fa)來(lai)調(diao)節(jie)(jie)(jie)所(suo)需(xu)(xu)(xu)要的(de)壓(ya)力(li)，靠(kao)節(jie)(jie)(jie)流閥(fa)來(lai)調(diao)節(jie)(jie)(jie)所(suo)需(xu)(xu)(xu)要的(de)流量。這種傳統的(de)氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統要想要有(you)多個(ge)(ge)輸(shu)(shu)出力(li)和多個(ge)(ge)運(yun)動(dong)速度，就需(xu)(xu)(xu)要多個(ge)(ge)減壓(ya)閥(fa)、節(jie)(jie)(jie)流閥(fa)及換向(xiang)(xiang)閥(fa)。這樣，不僅(jin)元件需(xu)(xu)(xu)要多，成本高，構成系統復(fu)雜，且許多元件都需(xu)(xu)(xu)要預先進行(xing)人工調(diao)節(jie)(jie)(jie)。電(dian)氣(qi)比例(li)閥(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬(shu)于連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)，其特點是輸(shu)(shu)出量隨輸(shu)(shu)入(ru)量的(de)變化而變化，輸(shu)(shu)出量與輸(shu)(shu)入(ru)量之間存在一定的(de)比例(li)關系。比例(li)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有(you)開環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和閉環(huan)控(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? |
