意大利ATOS比例閥主要體現在以下幾點: 1.驅動(dong)裝置不同。比(bi)例(li)閥的驅動(dong)裝置是(shi)比(bi)例(li)電磁鐵;伺(si)服閥的驅動(dong)裝置是(shi)力馬(ma)達或力矩馬(ma)達; 2.性能參數(shu)不同(tong)。滯環(huan)、中位死區、頻(pin)寬、過濾精度等特性不同(tong),因此(ci)應用場合不同(tong),伺服閥和伺服比例閥主要應用在閉(bi)環(huan)控(kong)制系統(tong),其它結構的比例閥主要應用在開環(huan)控(kong)系統(tong)及(ji)閉(bi)環(huan)速度控(kong)制系統(tong); - 伺(si)服閥中(zhong)位(wei)沒有死(si)區(qu),比例閥有中(zhong)位(wei)死(si)區(qu);
- 伺(si)服(fu)閥(fa)的頻(pin)響(xiang)(響(xiang)應頻(pin)率)更高,可(ke)以高達200Hz左(zuo)右(you),比例閥(fa)一般zui高幾十(shi)Hz;
- 伺服(fu)閥對液(ye)壓油(you)液(ye)的要求更高(gao),需要精過濾才(cai)行(xing),否則容易堵塞,比例閥要求低一些;
3.閥(fa)(fa)芯結(jie)構及加工精度不同(tong)。比例閥(fa)(fa)采用閥(fa)(fa)芯+閥(fa)(fa)體結(jie)構,閥(fa)(fa)體兼(jian)作(zuo)閥(fa)(fa)套。伺(si)服(fu)(fu)閥(fa)(fa)和伺(si)服(fu)(fu)比例閥(fa)(fa)采用閥(fa)(fa)芯+閥(fa)(fa)套的(de)結(jie)構。 4.中(zhong)位(wei)機(ji)能種類不同。比例換向閥具有與普通換向閥相似的中(zhong)位(wei)機(ji)能,而(er)伺服閥中(zhong)位(wei)機(ji)能只有O型(Rexroth產品的E型)。 5.閥的(de)額定壓(ya)降不同。 電氣(qi)比(bi)(bi)例(li)閥(fa)自(zi)動控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)可(ke)分(fen)成(cheng)斷續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)和連(lian)續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)即開(kai)關控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)。氣(qi)動控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)系統(tong)中使(shi)用動作頻率較低的(de)開(kai)關式(ON-OFF)的(de)換向閥(fa)來(lai)(lai)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)氣(qi)路的(de)通斷。靠減壓閥(fa)來(lai)(lai)調節所需要(yao)的(de)壓力(li),靠節流閥(fa)來(lai)(lai)調節所需要(yao)的(de)流量(liang)(liang)。這種(zhong)傳統(tong)的(de)氣(qi)動控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)系統(tong)要(yao)想要(yao)有多個(ge)輸出力(li)和多個(ge)運動速度,就需要(yao)多個(ge)減壓閥(fa)、節流閥(fa)及換向閥(fa)。這樣,不僅元(yuan)件(jian)(jian)需要(yao)多,成(cheng)本高,構成(cheng)系統(tong)復(fu)雜(za),且許(xu)多元(yuan)件(jian)(jian)都(dou)需要(yao)預(yu)先進行人工調節。電氣(qi)比(bi)(bi)例(li)閥(fa)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)屬(shu)于連(lian)續(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi),其(qi)特(te)點是輸出量(liang)(liang)隨(sui)輸入(ru)量(liang)(liang)的(de)變化(hua)(hua)而變化(hua)(hua),輸出量(liang)(liang)與輸入(ru)量(liang)(liang)之間存在(zai)一定(ding)的(de)比(bi)(bi)例(li)關系。比(bi)(bi)例(li)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)有開(kai)環控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)和閉(bi)環控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)之分(fen)。 意大利ATOS比例閥型號(hao)表: 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 |