意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動(dong)裝置(zhi)不同。比(bi)例(li)(li)閥的驅(qu)動(dong)裝置(zhi)是比(bi)例(li)(li)電磁鐵;伺(si)服閥的驅(qu)動(dong)裝置(zhi)是力(li)馬達或力(li)矩馬達; 2.性(xing)能參(can)數不(bu)同(tong)(tong)。滯環(huan)、中位死區、頻寬、過(guo)濾精度等特(te)性(xing)不(bu)同(tong)(tong),因此(ci)應用(yong)場合(he)不(bu)同(tong)(tong),伺服閥和伺服比例閥主(zhu)要應用(yong)在閉環(huan)控制系(xi)統(tong),其它結構的比例閥主(zhu)要應用(yong)在開環(huan)控系(xi)統(tong)及閉環(huan)速(su)度控制系(xi)統(tong); - 伺服閥中位(wei)沒有死區(qu),比(bi)例閥有中位(wei)死區(qu);
- 伺服閥的(de)頻響(響應頻率)更(geng)高(gao),可以(yi)高(gao)達200Hz左右(you),比(bi)例(li)閥一般zui高(gao)幾十Hz;
- 伺服閥(fa)對液壓(ya)油液的要求更(geng)高,需要精過濾才行(xing),否則(ze)容易堵塞,比例閥(fa)要求低一些(xie);
3.閥(fa)(fa)芯結(jie)構(gou)及加(jia)工精度(du)不同。比例(li)閥(fa)(fa)采(cai)用(yong)閥(fa)(fa)芯+閥(fa)(fa)體(ti)結(jie)構(gou),閥(fa)(fa)體(ti)兼作閥(fa)(fa)套(tao)。伺(si)服閥(fa)(fa)和伺(si)服比例(li)閥(fa)(fa)采(cai)用(yong)閥(fa)(fa)芯+閥(fa)(fa)套(tao)的結(jie)構(gou)。 4.中位機能種(zhong)類不同。比例換向(xiang)閥具有與普通(tong)換向(xiang)閥相似的中位機能,而伺服(fu)閥中位機能只有O型(Rexroth產品的E型)。 5.閥的額(e)定壓降不同(tong)。 電氣(qi)比例(li)(li)閥自動(dong)控(kong)(kong)(kong)(kong)制(zhi)可分成斷(duan)續(xu)控(kong)(kong)(kong)(kong)制(zhi)和(he)連(lian)續(xu)控(kong)(kong)(kong)(kong)制(zhi)。斷(duan)續(xu)控(kong)(kong)(kong)(kong)制(zhi)即開(kai)關(guan)控(kong)(kong)(kong)(kong)制(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)系(xi)統(tong)中使用動(dong)作頻率(lv)較低的(de)開(kai)關(guan)式(ON-OFF)的(de)換向閥來(lai)控(kong)(kong)(kong)(kong)制(zhi)氣(qi)路的(de)通(tong)斷(duan)。靠減壓(ya)(ya)閥來(lai)調(diao)節(jie)(jie)(jie)所需(xu)要(yao)(yao)(yao)的(de)壓(ya)(ya)力(li),靠節(jie)(jie)(jie)流(liu)(liu)(liu)閥來(lai)調(diao)節(jie)(jie)(jie)所需(xu)要(yao)(yao)(yao)的(de)流(liu)(liu)(liu)量。這種傳統(tong)的(de)氣(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)系(xi)統(tong)要(yao)(yao)(yao)想要(yao)(yao)(yao)有多(duo)個(ge)輸(shu)(shu)出(chu)力(li)和(he)多(duo)個(ge)運動(dong)速度,就(jiu)需(xu)要(yao)(yao)(yao)多(duo)個(ge)減壓(ya)(ya)閥、節(jie)(jie)(jie)流(liu)(liu)(liu)閥及換向閥。這樣,不(bu)僅(jin)元件需(xu)要(yao)(yao)(yao)多(duo),成本高,構成系(xi)統(tong)復(fu)雜,且許多(duo)元件都需(xu)要(yao)(yao)(yao)預先進(jin)行人工調(diao)節(jie)(jie)(jie)。電氣(qi)比例(li)(li)閥控(kong)(kong)(kong)(kong)制(zhi)屬于連(lian)續(xu)控(kong)(kong)(kong)(kong)制(zhi),其特(te)點是(shi)輸(shu)(shu)出(chu)量隨輸(shu)(shu)入(ru)量的(de)變化(hua)而變化(hua),輸(shu)(shu)出(chu)量與(yu)輸(shu)(shu)入(ru)量之間(jian)存在一定的(de)比例(li)(li)關(guan)系(xi)。比例(li)(li)控(kong)(kong)(kong)(kong)制(zhi)有開(kai)環(huan)控(kong)(kong)(kong)(kong)制(zhi)和(he)閉環(huan)控(kong)(kong)(kong)(kong)制(zhi)之分。 意大利ATOS比例閥型號(hao)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 |