意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動裝(zhuang)置(zhi)不同(tong)。比(bi)例閥的驅(qu)動裝(zhuang)置(zhi)是比(bi)例電磁鐵;伺(si)服閥的驅(qu)動裝(zhuang)置(zhi)是力(li)馬達或力(li)矩馬達; 2.性能參數不同。滯(zhi)環(huan)、中位死(si)區、頻寬(kuan)、過濾(lv)精(jing)度等特性不同,因此(ci)應用場合不同,伺服(fu)閥和伺服(fu)比例閥主要(yao)應用在(zai)閉(bi)環(huan)控制系(xi)統(tong),其它結(jie)構的(de)比例閥主要(yao)應用在(zai)開環(huan)控系(xi)統(tong)及(ji)閉(bi)環(huan)速度控制系(xi)統(tong); - 伺服閥(fa)中位(wei)沒有死(si)區,比例閥(fa)有中位(wei)死(si)區;
- 伺服閥(fa)的頻(pin)響(xiang)(響(xiang)應頻(pin)率(lv))更高,可以高達200Hz左右,比例閥(fa)一般(ban)zui高幾十(shi)Hz;
- 伺服閥對液壓油液的要(yao)求更(geng)高,需要(yao)精過濾才行,否則(ze)容易堵(du)塞,比例(li)閥要(yao)求低一些;
3.閥芯結構及加工精(jing)度不(bu)同。比例閥采(cai)用(yong)閥芯+閥體結構,閥體兼作閥套。伺服(fu)閥和(he)伺服(fu)比例閥采(cai)用(yong)閥芯+閥套的結構。 4.中(zhong)位機(ji)(ji)(ji)能(neng)種類不同。比例換向(xiang)(xiang)閥具有(you)與普通換向(xiang)(xiang)閥相似的中(zhong)位機(ji)(ji)(ji)能(neng),而伺(si)服閥中(zhong)位機(ji)(ji)(ji)能(neng)只有(you)O型(Rexroth產品(pin)的E型)。 5.閥(fa)的額定壓(ya)降不同。 電(dian)氣比(bi)(bi)例閥(fa)(fa)自動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分成斷(duan)續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷(duan)續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開關控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統中使用動(dong)作頻率較低(di)的(de)(de)(de)(de)開關式(ON-OFF)的(de)(de)(de)(de)換向閥(fa)(fa)來(lai)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣路的(de)(de)(de)(de)通斷(duan)。靠(kao)減壓(ya)(ya)閥(fa)(fa)來(lai)調節(jie)所需要(yao)的(de)(de)(de)(de)壓(ya)(ya)力,靠(kao)節(jie)流閥(fa)(fa)來(lai)調節(jie)所需要(yao)的(de)(de)(de)(de)流量。這種傳統的(de)(de)(de)(de)氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統要(yao)想要(yao)有多(duo)個(ge)輸出力和(he)多(duo)個(ge)運動(dong)速度,就需要(yao)多(duo)個(ge)減壓(ya)(ya)閥(fa)(fa)、節(jie)流閥(fa)(fa)及換向閥(fa)(fa)。這樣,不僅元(yuan)件需要(yao)多(duo),成本高,構(gou)成系(xi)統復(fu)雜(za),且許(xu)多(duo)元(yuan)件都需要(yao)預先進行人工調節(jie)。電(dian)氣比(bi)(bi)例閥(fa)(fa)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi),其(qi)特點是輸出量隨(sui)輸入量的(de)(de)(de)(de)變化(hua)而變化(hua),輸出量與(yu)輸入量之間(jian)存在(zai)一定的(de)(de)(de)(de)比(bi)(bi)例關系(xi)。比(bi)(bi)例控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)閉環控(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 |