ATOS比例閥主要體現在以下幾點: 1.驅動裝(zhuang)置(zhi)不同。比例閥的驅動裝(zhuang)置(zhi)是比例電磁鐵;伺服(fu)閥的驅動裝(zhuang)置(zhi)是力馬達或力矩馬達; 2.性能(neng)參數不(bu)(bu)同。滯環(huan)、中位死區(qu)、頻寬、過濾精(jing)度等特(te)性不(bu)(bu)同,因此(ci)應用(yong)場(chang)合(he)不(bu)(bu)同,伺(si)服(fu)閥(fa)和(he)伺(si)服(fu)比例閥(fa)主(zhu)要應用(yong)在閉環(huan)控制系統(tong),其它結構的比例閥(fa)主(zhu)要應用(yong)在開(kai)環(huan)控系統(tong)及(ji)閉環(huan)速度控制系統(tong); - 伺(si)服閥中位(wei)沒有(you)死區,比例(li)閥有(you)中位(wei)死區;
- 伺(si)服閥的頻響(響應頻率)更高,可以高達200Hz左右,比(bi)例閥一般zui高幾十Hz;
- 伺服(fu)閥對液(ye)壓油液(ye)的要求(qiu)更高(gao),需要精過濾(lv)才行,否則容易堵塞,比例閥要求(qiu)低一些;
3.閥(fa)(fa)芯結(jie)構及加工精度不同。比(bi)例閥(fa)(fa)采用閥(fa)(fa)芯+閥(fa)(fa)體(ti)結(jie)構,閥(fa)(fa)體(ti)兼作(zuo)閥(fa)(fa)套。伺服閥(fa)(fa)和伺服比(bi)例閥(fa)(fa)采用閥(fa)(fa)芯+閥(fa)(fa)套的結(jie)構。 4.中(zhong)位(wei)機(ji)能(neng)種(zhong)類不同。比例換(huan)向(xiang)閥具(ju)有(you)與普通換(huan)向(xiang)閥相似的(de)中(zhong)位(wei)機(ji)能(neng),而伺(si)服閥中(zhong)位(wei)機(ji)能(neng)只有(you)O型(Rexroth產品的(de)E型)。 5.閥的(de)額定壓降不同。 電氣(qi)比例(li)閥自動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)可分(fen)成(cheng)斷(duan)續控(kong)(kong)制(zhi)(zhi)(zhi)和(he)連(lian)(lian)續控(kong)(kong)制(zhi)(zhi)(zhi)。斷(duan)續控(kong)(kong)制(zhi)(zhi)(zhi)即開關控(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統中使用動(dong)作頻率較低的(de)開關式(ON-OFF)的(de)換向閥來控(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)路(lu)的(de)通斷(duan)。靠減壓閥來調(diao)節(jie)(jie)(jie)所(suo)需要(yao)(yao)(yao)的(de)壓力,靠節(jie)(jie)(jie)流閥來調(diao)節(jie)(jie)(jie)所(suo)需要(yao)(yao)(yao)的(de)流量。這(zhe)種傳(chuan)統的(de)氣(qi)動(dong)控(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統要(yao)(yao)(yao)想要(yao)(yao)(yao)有(you)多(duo)個輸(shu)出力和(he)多(duo)個運(yun)動(dong)速度,就需要(yao)(yao)(yao)多(duo)個減壓閥、節(jie)(jie)(jie)流閥及換向閥。這(zhe)樣(yang),不僅元(yuan)件需要(yao)(yao)(yao)多(duo),成(cheng)本高,構成(cheng)系(xi)統復雜,且許多(duo)元(yuan)件都(dou)需要(yao)(yao)(yao)預先(xian)進行人工(gong)調(diao)節(jie)(jie)(jie)。電氣(qi)比例(li)閥控(kong)(kong)制(zhi)(zhi)(zhi)屬(shu)于連(lian)(lian)續控(kong)(kong)制(zhi)(zhi)(zhi),其特點是輸(shu)出量隨輸(shu)入量的(de)變化(hua)而(er)變化(hua),輸(shu)出量與(yu)輸(shu)入量之間存(cun)在一定(ding)的(de)比例(li)關系(xi)。比例(li)控(kong)(kong)制(zhi)(zhi)(zhi)有(you)開環控(kong)(kong)制(zhi)(zhi)(zhi)和(he)閉環控(kong)(kong)制(zhi)(zhi)(zhi)之分(fen)。 意大利ATOS比例閥型號(hao)表: DHZO-ATE-073-P3/B/DP27SB 20 DHZO-T-051-L1 DHZO-T-051-L5 31 DHZO-T-071-D5 DHZO-T-071-L5 DHZO-T-071-S5 DHZO-TE-051-L5/Y 40 DHZO-TE-071-L5 DHZO-TE-071-S5 40 /PE DHZO-TE-073-S5 DKZA-A-173-L5/PA-M/7 DKZO-A-151-S5 DKZO-A-171-L5 DKZO-A-173-S5 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 DKZOR-TE-171-S5/Y DKZOR-TE-173-L5 40 |