意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動裝置(zhi)不(bu)同。比(bi)例(li)閥(fa)的驅(qu)動裝置(zhi)是比(bi)例(li)電磁鐵;伺服閥(fa)的驅(qu)動裝置(zhi)是力馬達或(huo)力矩馬達; 2.性能(neng)參數不同(tong)。滯環(huan)(huan)、中位死區(qu)、頻(pin)寬、過濾精度等特性不同(tong),因此應用(yong)(yong)場合不同(tong),伺服(fu)閥和伺服(fu)比例閥主(zhu)要應用(yong)(yong)在(zai)閉環(huan)(huan)控制系統,其它結構(gou)的比例閥主(zhu)要應用(yong)(yong)在(zai)開環(huan)(huan)控系統及閉環(huan)(huan)速度控制系統; - 伺服閥中位沒有死區(qu),比例閥有中位死區(qu);
- 伺服閥(fa)的頻(pin)響(xiang)(響(xiang)應頻(pin)率)更高(gao),可以高(gao)達200Hz左右(you),比(bi)例閥(fa)一般zui高(gao)幾(ji)十Hz;
- 伺(si)服(fu)閥對液壓油液的要(yao)求更高,需要(yao)精(jing)過濾(lv)才行,否則容易堵(du)塞,比例(li)閥要(yao)求低一些;
3.閥(fa)(fa)芯(xin)(xin)結構(gou)(gou)及加(jia)工(gong)精度不(bu)同。比例(li)閥(fa)(fa)采用閥(fa)(fa)芯(xin)(xin)+閥(fa)(fa)體(ti)結構(gou)(gou),閥(fa)(fa)體(ti)兼(jian)作閥(fa)(fa)套。伺(si)(si)服(fu)閥(fa)(fa)和伺(si)(si)服(fu)比例(li)閥(fa)(fa)采用閥(fa)(fa)芯(xin)(xin)+閥(fa)(fa)套的(de)結構(gou)(gou)。 4.中位(wei)(wei)機(ji)(ji)能種類不同。比(bi)例換向(xiang)閥(fa)具有(you)(you)與普通(tong)換向(xiang)閥(fa)相似的(de)中位(wei)(wei)機(ji)(ji)能,而(er)伺服閥(fa)中位(wei)(wei)機(ji)(ji)能只有(you)(you)O型(xing)(Rexroth產品(pin)的(de)E型(xing))。 5.閥的額定壓(ya)降(jiang)不同。 電(dian)氣(qi)比例(li)閥(fa)(fa)(fa)自(zi)動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可(ke)分成斷續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和連續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開(kai)關控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統中使用動(dong)作頻率(lv)較(jiao)低的開(kai)關式(ON-OFF)的換(huan)向(xiang)閥(fa)(fa)(fa)來控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)路的通(tong)斷。靠(kao)減(jian)壓閥(fa)(fa)(fa)來調節(jie)(jie)所(suo)需要(yao)的壓力(li),靠(kao)節(jie)(jie)流閥(fa)(fa)(fa)來調節(jie)(jie)所(suo)需要(yao)的流量(liang)(liang)。這(zhe)種傳統的氣(qi)動(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系統要(yao)想(xiang)要(yao)有多(duo)個輸(shu)出力(li)和多(duo)個運動(dong)速度,就需要(yao)多(duo)個減(jian)壓閥(fa)(fa)(fa)、節(jie)(jie)流閥(fa)(fa)(fa)及換(huan)向(xiang)閥(fa)(fa)(fa)。這(zhe)樣,不(bu)僅元件(jian)需要(yao)多(duo),成本高(gao),構(gou)成系統復雜,且許(xu)多(duo)元件(jian)都需要(yao)預先進行人工調節(jie)(jie)。電(dian)氣(qi)比例(li)閥(fa)(fa)(fa)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于(yu)連續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi),其特點(dian)是輸(shu)出量(liang)(liang)隨(sui)輸(shu)入量(liang)(liang)的變化而變化,輸(shu)出量(liang)(liang)與輸(shu)入量(liang)(liang)之間存在(zai)一(yi)定的比例(li)關系。比例(li)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開(kai)環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和閉環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)之分。 意大利ATOS比例閥型號表: DKZOR-A-151-S5 DKZOR-A-151-S5/18 40 DKZOR-A-151-S5/B DKZOR-A-153-L5/B DKZOR-A-171-D5 40 DKZOR-A-171-L5 DKZOR-A-171-S5 DKZOR-A-171-S5/18 DKZOR-A-173-D5 DKZOR-A-173-L5 DKZOR-A-173-L5/18 40 DKZOR-A-173-L5/Y DKZOR-A-173-S3 DKZOR-A-173-S5 DKZOR-A-173-S5/18 DKZOR-AE-171-L5 10 DKZOR-AE-171-S5 DKZOR-AE-171-S5 10/WG DKZOR-AE-171-S5/Y 10 DKZOR-AE-173-D5 10 DKZOR-AE-173-L5 10 DKZORC-A-151-S5/18 DKZOR-T-151-L5 DKZOR-T-151-L5/Y DKZOR-T-153-L5 DKZOR-T-171-D5 DKZOR-T-171-L5 DKZOR-T-171-S5 DKZOR-T-171-S5/Y DKZOR-T-173-L5 40 DKZOR-TE-170-L5 40 DKZOR-TE-171-L5 DKZOR-TE-171-L5/I 40 DKZOR-TE-171-S5 |