意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)(qu)動(dong)裝置(zhi)(zhi)不(bu)同。比(bi)例閥(fa)的(de)驅(qu)(qu)動(dong)裝置(zhi)(zhi)是比(bi)例電磁鐵；伺服(fu)閥(fa)的(de)驅(qu)(qu)動(dong)裝置(zhi)(zhi)是力馬(ma)達(da)(da)或力矩馬(ma)達(da)(da)； 2.性能(neng)參數不(bu)(bu)同(tong)(tong)。滯環(huan)、中位死(si)區、頻寬、過濾精(jing)度等特性不(bu)(bu)同(tong)(tong)，因此應(ying)用場合不(bu)(bu)同(tong)(tong)，伺服閥(fa)和伺服比(bi)例閥(fa)主要(yao)應(ying)用在閉環(huan)控(kong)制系(xi)統(tong)(tong)，其它結(jie)構的比(bi)例閥(fa)主要(yao)應(ying)用在開環(huan)控(kong)系(xi)統(tong)(tong)及(ji)閉環(huan)速度控(kong)制系(xi)統(tong)(tong)； - 伺服閥(fa)中位沒有死區(qu)，比例閥(fa)有中位死區(qu)；
- 伺服閥(fa)的頻響（響應頻率）更高(gao)，可以高(gao)達200Hz左右，比例閥(fa)一般zui高(gao)幾十Hz；
- 伺服(fu)閥對液(ye)壓油液(ye)的要(yao)(yao)求(qiu)更高(gao)，需要(yao)(yao)精過濾才(cai)行，否(fou)則容(rong)易堵(du)塞，比例(li)閥要(yao)(yao)求(qiu)低一些；
3.閥芯(xin)(xin)結構及加工精度不(bu)同(tong)。比例閥采用(yong)閥芯(xin)(xin)+閥體(ti)結構，閥體(ti)兼作閥套。伺服閥和伺服比例閥采用(yong)閥芯(xin)(xin)+閥套的結構。 4.中(zhong)位機能(neng)種類不同。比例(li)換向閥(fa)具有(you)與普通換向閥(fa)相似的中(zhong)位機能(neng)，而(er)伺服閥(fa)中(zhong)位機能(neng)只(zhi)有(you)O型(xing)（Rexroth產品(pin)的E型(xing)）。 5.閥的額定壓降不同。 電氣(qi)(qi)比例閥自(zi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)可分(fen)成(cheng)斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)和連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)制(zhi)(zhi)即開(kai)關控(kong)(kong)(kong)制(zhi)(zhi)。氣(qi)(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)(tong)(tong)中使用動(dong)作頻率較低的(de)(de)開(kai)關式(ON-OFF)的(de)(de)換向(xiang)閥來(lai)控(kong)(kong)(kong)制(zhi)(zhi)氣(qi)(qi)路的(de)(de)通斷。靠(kao)減(jian)壓(ya)閥來(lai)調節(jie)(jie)所需(xu)要(yao)(yao)的(de)(de)壓(ya)力，靠(kao)節(jie)(jie)流(liu)閥來(lai)調節(jie)(jie)所需(xu)要(yao)(yao)的(de)(de)流(liu)量。這(zhe)種傳統(tong)(tong)(tong)的(de)(de)氣(qi)(qi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)系(xi)統(tong)(tong)(tong)要(yao)(yao)想(xiang)要(yao)(yao)有(you)(you)多(duo)個(ge)(ge)輸(shu)出力和多(duo)個(ge)(ge)運動(dong)速度，就需(xu)要(yao)(yao)多(duo)個(ge)(ge)減(jian)壓(ya)閥、節(jie)(jie)流(liu)閥及(ji)換向(xiang)閥。這(zhe)樣(yang)，不僅元(yuan)件需(xu)要(yao)(yao)多(duo)，成(cheng)本高，構(gou)成(cheng)系(xi)統(tong)(tong)(tong)復雜，且許多(duo)元(yuan)件都需(xu)要(yao)(yao)預(yu)先(xian)進行人工調節(jie)(jie)。電氣(qi)(qi)比例閥控(kong)(kong)(kong)制(zhi)(zhi)屬(shu)于連續(xu)控(kong)(kong)(kong)制(zhi)(zhi)，其特點是輸(shu)出量隨(sui)輸(shu)入(ru)量的(de)(de)變(bian)化而變(bian)化，輸(shu)出量與輸(shu)入(ru)量之(zhi)間存在(zai)一定的(de)(de)比例關系(xi)。比例控(kong)(kong)(kong)制(zhi)(zhi)有(you)(you)開(kai)環控(kong)(kong)(kong)制(zhi)(zhi)和閉環控(kong)(kong)(kong)制(zhi)(zhi)之(zhi)分(fen)。 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 |
