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。比例閥(fa)的驅(qu)動裝(zhuang)置(zhi)是(shi)比例電磁(ci)鐵(tie);伺服閥(fa)的驅(qu)動裝(zhuang)置(zhi)是(shi)力馬(ma)達或力矩(ju)馬(ma)達; 2.性(xing)能(neng)參數(shu)不同。滯環(huan)(huan)、中位死區、頻寬、過(guo)濾精度(du)(du)等特性(xing)不同,因(yin)此(ci)應用(yong)場合不同,伺服閥(fa)和伺服比例閥(fa)主要應用(yong)在閉(bi)(bi)環(huan)(huan)控(kong)(kong)制(zhi)系統(tong),其它(ta)結構的比例閥(fa)主要應用(yong)在開環(huan)(huan)控(kong)(kong)系統(tong)及(ji)閉(bi)(bi)環(huan)(huan)速度(du)(du)控(kong)(kong)制(zhi)系統(tong); - 伺(si)服閥中位沒有死(si)區(qu),比例閥有中位死(si)區(qu);
- 伺(si)服閥的頻響(xiang)(響(xiang)應頻率)更高,可以高達200Hz左右(you),比例閥一般zui高幾十Hz;
- 伺服閥對液壓油液的要(yao)求(qiu)更高(gao),需要(yao)精過濾才(cai)行,否則容易堵塞,比(bi)例閥要(yao)求(qiu)低一些;
3.閥(fa)芯結(jie)構及加工精度不同。比例(li)閥(fa)采用閥(fa)芯+閥(fa)體結(jie)構,閥(fa)體兼作閥(fa)套。伺(si)服閥(fa)和伺(si)服比例(li)閥(fa)采用閥(fa)芯+閥(fa)套的結(jie)構。 4.中位(wei)機能(neng)種(zhong)類不同。比(bi)例換向閥具有與普通換向閥相似(si)的(de)中位(wei)機能(neng),而伺(si)服閥中位(wei)機能(neng)只(zhi)有O型(Rexroth產品的(de)E型)。 5.閥的額(e)定壓降不同。 電氣比(bi)例(li)(li)閥(fa)自動(dong)控(kong)(kong)制(zhi)可分成斷(duan)續(xu)控(kong)(kong)制(zhi)和連(lian)續(xu)控(kong)(kong)制(zhi)。斷(duan)續(xu)控(kong)(kong)制(zhi)即開(kai)關(guan)控(kong)(kong)制(zhi)。氣動(dong)控(kong)(kong)制(zhi)系統(tong)(tong)(tong)(tong)中使用動(dong)作頻率(lv)較低的(de)開(kai)關(guan)式(shi)(ON-OFF)的(de)換向(xiang)閥(fa)來(lai)控(kong)(kong)制(zhi)氣路的(de)通斷(duan)。靠減壓閥(fa)來(lai)調節(jie)(jie)(jie)所需(xu)要(yao)(yao)的(de)壓力,靠節(jie)(jie)(jie)流閥(fa)來(lai)調節(jie)(jie)(jie)所需(xu)要(yao)(yao)的(de)流量(liang)。這(zhe)種傳(chuan)統(tong)(tong)(tong)(tong)的(de)氣動(dong)控(kong)(kong)制(zhi)系統(tong)(tong)(tong)(tong)要(yao)(yao)想(xiang)要(yao)(yao)有多個(ge)輸(shu)出力和多個(ge)運動(dong)速(su)度,就需(xu)要(yao)(yao)多個(ge)減壓閥(fa)、節(jie)(jie)(jie)流閥(fa)及換向(xiang)閥(fa)。這(zhe)樣,不(bu)僅(jin)元件(jian)需(xu)要(yao)(yao)多,成本高,構成系統(tong)(tong)(tong)(tong)復雜,且許(xu)多元件(jian)都需(xu)要(yao)(yao)預先進行人工(gong)調節(jie)(jie)(jie)。電氣比(bi)例(li)(li)閥(fa)控(kong)(kong)制(zhi)屬(shu)于連(lian)續(xu)控(kong)(kong)制(zhi),其特點是(shi)輸(shu)出量(liang)隨輸(shu)入量(liang)的(de)變(bian)化(hua)而(er)變(bian)化(hua),輸(shu)出量(liang)與(yu)輸(shu)入量(liang)之間存在一定的(de)比(bi)例(li)(li)關(guan)系。比(bi)例(li)(li)控(kong)(kong)制(zhi)有開(kai)環控(kong)(kong)制(zhi)和閉環控(kong)(kong)制(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 |