意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動(dong)裝置不(bu)同(tong)。比例閥的(de)驅(qu)動(dong)裝置是比例電(dian)磁鐵；伺服閥的(de)驅(qu)動(dong)裝置是力馬達或力矩(ju)馬達； 2.性能參數(shu)不(bu)同(tong)。滯環、中位死區、頻寬、過濾精度等特性不(bu)同(tong)，因此應(ying)用場合不(bu)同(tong)，伺服閥和伺服比(bi)例閥主要(yao)應(ying)用在閉環控制系(xi)統，其它結構的(de)比(bi)例閥主要(yao)應(ying)用在開環控系(xi)統及閉環速度控制系(xi)統； - 伺服(fu)閥(fa)中位沒(mei)有死區，比(bi)例(li)閥(fa)有中位死區；
- 伺(si)服閥的頻響(xiang)（響(xiang)應頻率）更高(gao)，可以(yi)高(gao)達200Hz左右，比例(li)閥一(yi)般zui高(gao)幾十(shi)Hz；
- 伺(si)服閥(fa)對液壓(ya)油(you)液的要求更高，需要精過濾才行，否則容易堵塞，比例閥(fa)要求低一些；
3.閥(fa)(fa)(fa)芯(xin)結構(gou)及加(jia)工精(jing)度不同。比(bi)例閥(fa)(fa)(fa)采(cai)用(yong)閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)體(ti)結構(gou)，閥(fa)(fa)(fa)體(ti)兼作閥(fa)(fa)(fa)套。伺(si)服閥(fa)(fa)(fa)和伺(si)服比(bi)例閥(fa)(fa)(fa)采(cai)用(yong)閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)套的結構(gou)。 4.中(zhong)位機能(neng)(neng)(neng)種類(lei)不(bu)同(tong)。比(bi)例換(huan)向(xiang)閥(fa)(fa)具有與(yu)普通換(huan)向(xiang)閥(fa)(fa)相似的中(zhong)位機能(neng)(neng)(neng)，而伺服閥(fa)(fa)中(zhong)位機能(neng)(neng)(neng)只有O型(xing)（Rexroth產(chan)品的E型(xing)）。 5.閥的(de)額定壓降不同。 電氣(qi)比(bi)例(li)閥(fa)(fa)(fa)(fa)自動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)可分成(cheng)斷續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和(he)連續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。斷續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)即開關控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)系統(tong)中使用動(dong)作(zuo)頻(pin)率較(jiao)低的(de)開關式(ON-OFF)的(de)換向閥(fa)(fa)(fa)(fa)來控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)氣(qi)路的(de)通斷。靠(kao)減壓閥(fa)(fa)(fa)(fa)來調節(jie)所需要(yao)(yao)的(de)壓力，靠(kao)節(jie)流閥(fa)(fa)(fa)(fa)來調節(jie)所需要(yao)(yao)的(de)流量。這種傳統(tong)的(de)氣(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)系統(tong)要(yao)(yao)想要(yao)(yao)有(you)多(duo)個(ge)輸(shu)(shu)出力和(he)多(duo)個(ge)運動(dong)速度(du)，就需要(yao)(yao)多(duo)個(ge)減壓閥(fa)(fa)(fa)(fa)、節(jie)流閥(fa)(fa)(fa)(fa)及換向閥(fa)(fa)(fa)(fa)。這樣，不僅元(yuan)件需要(yao)(yao)多(duo)，成(cheng)本高，構成(cheng)系統(tong)復雜，且許(xu)多(duo)元(yuan)件都需要(yao)(yao)預先(xian)進行人工調節(jie)。電氣(qi)比(bi)例(li)閥(fa)(fa)(fa)(fa)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)屬于連續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，其(qi)特點(dian)是輸(shu)(shu)出量隨(sui)輸(shu)(shu)入(ru)量的(de)變(bian)化而變(bian)化，輸(shu)(shu)出量與輸(shu)(shu)入(ru)量之間存在一定的(de)比(bi)例(li)關系。比(bi)例(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)有(you)開環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和(he)閉環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(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 |
