ATOS比例閥主要體現在以下幾點: 1.驅(qu)動(dong)裝置(zhi)(zhi)不同。比例閥的驅(qu)動(dong)裝置(zhi)(zhi)是比例電(dian)磁鐵;伺服閥的驅(qu)動(dong)裝置(zhi)(zhi)是力(li)馬(ma)達或力(li)矩馬(ma)達; 2.性(xing)能參數不(bu)同。滯(zhi)環(huan)(huan)、中位死區、頻寬、過(guo)濾精度等特性(xing)不(bu)同,因此應(ying)用場合不(bu)同,伺服閥(fa)和伺服比例閥(fa)主要(yao)應(ying)用在(zai)閉(bi)環(huan)(huan)控制系(xi)統,其它結構的(de)比例閥(fa)主要(yao)應(ying)用在(zai)開環(huan)(huan)控系(xi)統及閉(bi)環(huan)(huan)速度控制系(xi)統; - 伺服(fu)閥(fa)中位(wei)(wei)沒有死區(qu),比例閥(fa)有中位(wei)(wei)死區(qu);
- 伺(si)服閥的頻響(響應頻率)更高,可(ke)以高達200Hz左(zuo)右,比例閥一般(ban)zui高幾(ji)十(shi)Hz;
- 伺(si)服閥對液(ye)壓油液(ye)的(de)要求更高(gao),需要精過濾(lv)才行,否則容易堵塞,比例(li)閥要求低一些;
3.閥(fa)(fa)(fa)(fa)芯(xin)結構(gou)(gou)及加(jia)工精度不同。比(bi)例(li)閥(fa)(fa)(fa)(fa)采用閥(fa)(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)(fa)體(ti)結構(gou)(gou),閥(fa)(fa)(fa)(fa)體(ti)兼作閥(fa)(fa)(fa)(fa)套。伺服閥(fa)(fa)(fa)(fa)和伺服比(bi)例(li)閥(fa)(fa)(fa)(fa)采用閥(fa)(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)(fa)套的結構(gou)(gou)。 4.中(zhong)(zhong)位機能(neng)(neng)種類(lei)不同。比例(li)換(huan)向閥(fa)(fa)具有(you)與普通換(huan)向閥(fa)(fa)相(xiang)似的中(zhong)(zhong)位機能(neng)(neng),而伺(si)服閥(fa)(fa)中(zhong)(zhong)位機能(neng)(neng)只有(you)O型(Rexroth產品(pin)的E型)。 5.閥的額定壓降不同。 電氣(qi)比(bi)例(li)閥(fa)(fa)自動控(kong)(kong)(kong)(kong)制可(ke)分成(cheng)斷續(xu)控(kong)(kong)(kong)(kong)制和(he)連續(xu)控(kong)(kong)(kong)(kong)制。斷續(xu)控(kong)(kong)(kong)(kong)制即開(kai)(kai)關控(kong)(kong)(kong)(kong)制。氣(qi)動控(kong)(kong)(kong)(kong)制系(xi)統(tong)(tong)中使用動作頻率較(jiao)低(di)的(de)開(kai)(kai)關式(ON-OFF)的(de)換向閥(fa)(fa)來(lai)控(kong)(kong)(kong)(kong)制氣(qi)路的(de)通斷。靠減壓閥(fa)(fa)來(lai)調(diao)節所需(xu)要的(de)壓力(li),靠節流(liu)閥(fa)(fa)來(lai)調(diao)節所需(xu)要的(de)流(liu)量(liang)(liang)。這種(zhong)傳統(tong)(tong)的(de)氣(qi)動控(kong)(kong)(kong)(kong)制系(xi)統(tong)(tong)要想要有(you)多個(ge)輸出力(li)和(he)多個(ge)運動速度,就需(xu)要多個(ge)減壓閥(fa)(fa)、節流(liu)閥(fa)(fa)及換向閥(fa)(fa)。這樣,不僅元(yuan)件(jian)需(xu)要多,成(cheng)本高,構成(cheng)系(xi)統(tong)(tong)復(fu)雜,且(qie)許(xu)多元(yuan)件(jian)都需(xu)要預先進(jin)行人工調(diao)節。電氣(qi)比(bi)例(li)閥(fa)(fa)控(kong)(kong)(kong)(kong)制屬于連續(xu)控(kong)(kong)(kong)(kong)制,其(qi)特點是輸出量(liang)(liang)隨輸入量(liang)(liang)的(de)變化而變化,輸出量(liang)(liang)與(yu)輸入量(liang)(liang)之(zhi)間存在一定的(de)比(bi)例(li)關系(xi)。比(bi)例(li)控(kong)(kong)(kong)(kong)制有(you)開(kai)(kai)環(huan)控(kong)(kong)(kong)(kong)制和(he)閉環(huan)控(kong)(kong)(kong)(kong)制之(zhi)分。 意大利ATOS比例閥型號表: 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 |