ATOS比例閥對(dui)流量(liang)的(de)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可(ke)以(yi)分為(wei)兩種:一(yi)種是(shi)(shi)開關控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi):要么(me)(me)全開、要么(me)(me)全關,流量(liang)要么(me)(me)zui大、要么(me)(me)zui小(xiao),沒有(you)中間狀(zhuang)態,如普通(tong)(tong)的(de)電磁(ci)直通(tong)(tong)閥(fa)(fa)(fa)(fa)、電磁(ci)換(huan)向閥(fa)(fa)(fa)(fa)、電液(ye)換(huan)向閥(fa)(fa)(fa)(fa)。另一(yi)種是(shi)(shi)連續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi):閥(fa)(fa)(fa)(fa)口可(ke)以(yi)根據需(xu)要打開任意一(yi)個開度,由此控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)通(tong)(tong)過流量(liang)的(de)大小(xiao),這類閥(fa)(fa)(fa)(fa)有(you)手動控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)的(de),如節流閥(fa)(fa)(fa)(fa),也有(you)電控(kong)(kong)(kong)(kong)的(de),如比(bi)例閥(fa)(fa)(fa)(fa)、伺(si)服(fu)閥(fa)(fa)(fa)(fa)。所以(yi)使(shi)用比(bi)例閥(fa)(fa)(fa)(fa)或伺(si)服(fu)閥(fa)(fa)(fa)(fa)的(de)目的(de)就是(shi)(shi):以(yi)電控(kong)(kong)(kong)(kong)方(fang)式實(shi)現(xian)對(dui)流量(liang)的(de)節流控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(當然(ran)經過結構上(shang)的(de)改動也可(ke)實(shi)現(xian)壓力控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)等),既然(ran)是(shi)(shi)節流控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi),就必(bi)然(ran)有(you)能量(liang)損(sun)失(shi),伺(si)服(fu)閥(fa)(fa)(fa)(fa)和其(qi)它閥(fa)(fa)(fa)(fa)不同(tong)的(de)是(shi)(shi),它的(de)能量(liang)損(sun)失(shi)更(geng)大一(yi)些,因為(wei)它需(xu)要一(yi)定的(de)流量(liang)來維持前置級控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)油路的(de)工作。 ATOS比例閥和伺服閥的區別 主要(yao)體現在以(yi)下幾(ji)點: 1.驅動(dong)(dong)裝(zhuang)置不同。比例閥的驅動(dong)(dong)裝(zhuang)置是比例電磁(ci)鐵;伺服閥的驅動(dong)(dong)裝(zhuang)置是力馬達或力矩馬達; 2.性能(neng)參數不(bu)同。滯環(huan)、中(zhong)位死區、頻(pin)寬、過濾(lv)精(jing)度(du)等(deng)特(te)性不(bu)同,因此應(ying)用(yong)場合不(bu)同,伺(si)服(fu)(fu)閥(fa)和伺(si)服(fu)(fu)比(bi)例(li)閥(fa)主要(yao)應(ying)用(yong)在(zai)閉(bi)環(huan)控(kong)(kong)制(zhi)系(xi)統(tong)(tong)(tong),其它(ta)結構的比(bi)例(li)閥(fa)主要(yao)應(ying)用(yong)在(zai)開環(huan)控(kong)(kong)系(xi)統(tong)(tong)(tong)及(ji)閉(bi)環(huan)速(su)度(du)控(kong)(kong)制(zhi)系(xi)統(tong)(tong)(tong); - 伺服(fu)閥中位沒有死區(qu)(qu),比(bi)例閥有中位死區(qu)(qu);
- 伺(si)服(fu)閥(fa)的(de)頻(pin)響(響應頻(pin)率)更高,可以高達200Hz左右,比例閥(fa)一(yi)般zui高幾十Hz;
- 伺服(fu)閥(fa)對(dui)液(ye)壓油液(ye)的要(yao)(yao)求更高,需要(yao)(yao)精過濾才行,否則容易(yi)堵塞,比例(li)閥(fa)要(yao)(yao)求低(di)一些;
3.閥(fa)(fa)芯(xin)結構(gou)及加工精度(du)不同。比例(li)閥(fa)(fa)采用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)體結構(gou),閥(fa)(fa)體兼(jian)作閥(fa)(fa)套(tao)。伺(si)服閥(fa)(fa)和伺(si)服比例(li)閥(fa)(fa)采用(yong)閥(fa)(fa)芯(xin)+閥(fa)(fa)套(tao)的結構(gou)。 4.中位(wei)機能種類不(bu)同。比例換向(xiang)閥具有(you)與(yu)普通換向(xiang)閥相似的中位(wei)機能,而伺服閥中位(wei)機能只(zhi)有(you)O型(Rexroth產(chan)品的E型)。 5.閥的額定壓(ya)降(jiang)不同。 意大利阿托斯比例閥RZMA部分型號: RZMA-A-010/250/M 21 RZMA-A-030/180/M/7 21 RZMO-A-010/100 RZMO-A-010/210 RZMO-A-010/210/18 20 RZMO-A-010/315 RZMO-A-010/315/18 RZMO-A-010/50 RZMO-A-010/50/18 RZMO-A-030/100 20 RZMO-A-030/210 20 RZMO-A-030/210/18 RZMO-A-030/315 RZMO-AE-010/315 10 RZMO-AE-030/100 40 RZMO-P1-010/100/18/MC 20 RZMO-P1-010/210 RZMO-P3-010/100/AM1NSA RZMO-P3-010/100/I/AM1NSA RZMO-P3-010/210/I/AM1NS RZMO-P3-010/210/I/AMINSA RZMO-TER-010/100 40 RZMO-TER-010/315 40 RZMO-TER-010/315/I 40 RZMO-TER-030/210 40 RZMO-TER-030/315/I 40 |