意大利ATOS比例閥主要體現在以下幾點： 1.驅動(dong)(dong)裝(zhuang)置不同。比例閥的驅動(dong)(dong)裝(zhuang)置是(shi)比例電(dian)磁鐵；伺(si)服閥的驅動(dong)(dong)裝(zhuang)置是(shi)力馬達或力矩馬達； 2.性能參數(shu)不(bu)同。滯(zhi)環、中位死區、頻(pin)寬、過(guo)濾精度等特性不(bu)同，因(yin)此(ci)應(ying)用(yong)場合不(bu)同，伺服閥和伺服比(bi)例(li)閥主要應(ying)用(yong)在閉環控(kong)制(zhi)系(xi)統(tong)(tong)(tong)，其它結構的(de)比(bi)例(li)閥主要應(ying)用(yong)在開環控(kong)系(xi)統(tong)(tong)(tong)及閉環速度控(kong)制(zhi)系(xi)統(tong)(tong)(tong)； - 伺服閥中位(wei)沒(mei)有(you)死區，比例閥有(you)中位(wei)死區；
- 伺服閥(fa)(fa)的(de)頻(pin)響(xiang)(xiang)（響(xiang)(xiang)應頻(pin)率(lv)）更高(gao)，可(ke)以高(gao)達200Hz左右(you)，比例閥(fa)(fa)一般(ban)zui高(gao)幾十Hz；
- 伺服(fu)閥對液壓油(you)液的要(yao)求更高(gao)，需要(yao)精過濾(lv)才(cai)行，否則容易堵塞，比例閥要(yao)求低一些；
3.閥(fa)(fa)(fa)(fa)芯結構及加工精度不(bu)同。比(bi)(bi)例閥(fa)(fa)(fa)(fa)采用(yong)閥(fa)(fa)(fa)(fa)芯+閥(fa)(fa)(fa)(fa)體結構，閥(fa)(fa)(fa)(fa)體兼作閥(fa)(fa)(fa)(fa)套。伺(si)服閥(fa)(fa)(fa)(fa)和(he)伺(si)服比(bi)(bi)例閥(fa)(fa)(fa)(fa)采用(yong)閥(fa)(fa)(fa)(fa)芯+閥(fa)(fa)(fa)(fa)套的結構。 4.中(zhong)位(wei)機(ji)能(neng)種類不同。比例換(huan)(huan)向(xiang)閥(fa)(fa)具有與(yu)普通換(huan)(huan)向(xiang)閥(fa)(fa)相似的中(zhong)位(wei)機(ji)能(neng)，而伺服閥(fa)(fa)中(zhong)位(wei)機(ji)能(neng)只有O型（Rexroth產品的E型）。 5.閥的額定壓降不同(tong)。 電氣(qi)比(bi)(bi)(bi)例(li)閥(fa)自動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分成斷(duan)續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和連(lian)續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷(duan)續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開關(guan)(guan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統(tong)(tong)中使用(yong)動(dong)(dong)作(zuo)頻率較低的(de)(de)開關(guan)(guan)式(ON-OFF)的(de)(de)換(huan)向閥(fa)來(lai)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)路的(de)(de)通斷(duan)。靠減壓閥(fa)來(lai)調(diao)節所需(xu)(xu)要(yao)的(de)(de)壓力(li)，靠節流閥(fa)來(lai)調(diao)節所需(xu)(xu)要(yao)的(de)(de)流量。這種(zhong)傳統(tong)(tong)的(de)(de)氣(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統(tong)(tong)要(yao)想要(yao)有多(duo)個(ge)輸(shu)(shu)出(chu)(chu)(chu)力(li)和多(duo)個(ge)運動(dong)(dong)速度，就需(xu)(xu)要(yao)多(duo)個(ge)減壓閥(fa)、節流閥(fa)及換(huan)向閥(fa)。這樣，不僅元(yuan)件需(xu)(xu)要(yao)多(duo)，成本(ben)高，構成系(xi)統(tong)(tong)復雜，且許多(duo)元(yuan)件都(dou)需(xu)(xu)要(yao)預(yu)先進(jin)行人工(gong)調(diao)節。電氣(qi)比(bi)(bi)(bi)例(li)閥(fa)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連(lian)續控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)，其特點是輸(shu)(shu)出(chu)(chu)(chu)量隨輸(shu)(shu)入(ru)量的(de)(de)變化(hua)而變化(hua)，輸(shu)(shu)出(chu)(chu)(chu)量與輸(shu)(shu)入(ru)量之(zhi)間存在一(yi)定的(de)(de)比(bi)(bi)(bi)例(li)關(guan)(guan)系(xi)。比(bi)(bi)(bi)例(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和閉環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)之(zhi)分。 意大利ATOS比例閥型(xing)號表(biao)： LEQZO-A-162S4
LEQZO-A-252L4
LEQZO-A-252S4
LIQZO-LE-252L4
LIQZO-LE-253L4
LIQZO-LE-253L4/Q
LIQZO-LE-322L4
LIQZO-LE-322L4/F
LIQZO-LE-322L4/Q
LIQZO-LE-402L4
LIQZO-LE-403-L4
LIQZO-LE-403-L4/Q
LIQZO-LE-502L4
LIQZO-LE-503L4
LIQZO-LE-632L4
LIQZO-LE-632L4/Q
LIQZO-LE-633L4
LIQZO-LE-803-L4
LIQZO-LE-803-L4/F
LIQZO-LES-BP-502L4/Z
LIQZO-LES-PS-162L4
LIQZO-LES-PS-162L4/Z
LIQZO-T-402L4
LIQZO-T-502L4
LIQZO-TE-162L4
LIQZO-TE-252L4
LIQZO-TE-252L4/I
LIQZO-TE-322L4
LIQZO-TE-322L4/F
LIQZO-TE-402L4
LIQZO-TE-502L4
LIQZO-TES-PS-162L4 |
