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(bu)同。比例(li)閥的(de)驅動(dong)(dong)裝(zhuang)置是比例(li)電磁鐵;伺服閥的(de)驅動(dong)(dong)裝(zhuang)置是力馬(ma)達或力矩馬(ma)達; 2.性能參數不同。滯環(huan)、中位死區(qu)、頻(pin)寬、過濾(lv)精度等特(te)性不同,因此(ci)應(ying)用(yong)場合不同,伺服閥和(he)伺服比例(li)閥主要(yao)應(ying)用(yong)在(zai)閉環(huan)控制(zhi)系(xi)統(tong)(tong),其它結構的比例(li)閥主要(yao)應(ying)用(yong)在(zai)開(kai)環(huan)控系(xi)統(tong)(tong)及(ji)閉環(huan)速度控制(zhi)系(xi)統(tong)(tong); - 伺服閥(fa)中位(wei)沒有死(si)區(qu),比例閥(fa)有中位(wei)死(si)區(qu);
- 伺(si)服(fu)閥的頻(pin)(pin)響(xiang)(響(xiang)應頻(pin)(pin)率)更高,可以(yi)高達200Hz左右,比例閥一般zui高幾十Hz;
- 伺服閥對液壓油液的要(yao)求更高,需要(yao)精過(guo)濾才行(xing),否(fou)則容(rong)易堵塞(sai),比例閥要(yao)求低一(yi)些(xie);
3.閥(fa)(fa)(fa)(fa)(fa)芯(xin)結(jie)構(gou)及(ji)加工(gong)精度不同。比(bi)例閥(fa)(fa)(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)(fa)(fa)體結(jie)構(gou),閥(fa)(fa)(fa)(fa)(fa)體兼作閥(fa)(fa)(fa)(fa)(fa)套。伺服(fu)閥(fa)(fa)(fa)(fa)(fa)和伺服(fu)比(bi)例閥(fa)(fa)(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)(fa)(fa)套的結(jie)構(gou)。 4.中(zhong)位(wei)機能種類不同。比例換向(xiang)閥具有(you)與普(pu)通換向(xiang)閥相(xiang)似(si)的中(zhong)位(wei)機能,而伺服閥中(zhong)位(wei)機能只有(you)O型(Rexroth產品的E型)。 5.閥的額定壓降不同。 電氣(qi)(qi)比(bi)例閥(fa)(fa)(fa)(fa)自動(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分成(cheng)斷(duan)續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)連續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷(duan)續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開關控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統中使用動(dong)(dong)作頻率較低的(de)(de)開關式(ON-OFF)的(de)(de)換(huan)(huan)向閥(fa)(fa)(fa)(fa)來控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣(qi)(qi)路的(de)(de)通(tong)斷(duan)。靠(kao)減(jian)壓(ya)閥(fa)(fa)(fa)(fa)來調(diao)節所(suo)需(xu)要(yao)的(de)(de)壓(ya)力(li),靠(kao)節流(liu)閥(fa)(fa)(fa)(fa)來調(diao)節所(suo)需(xu)要(yao)的(de)(de)流(liu)量。這種傳(chuan)統的(de)(de)氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統要(yao)想要(yao)有多個輸(shu)(shu)出力(li)和(he)多個運動(dong)(dong)速度,就需(xu)要(yao)多個減(jian)壓(ya)閥(fa)(fa)(fa)(fa)、節流(liu)閥(fa)(fa)(fa)(fa)及換(huan)(huan)向閥(fa)(fa)(fa)(fa)。這樣,不僅元件需(xu)要(yao)多,成(cheng)本高(gao),構成(cheng)系(xi)統復雜,且許多元件都需(xu)要(yao)預先進行人工調(diao)節。電氣(qi)(qi)比(bi)例閥(fa)(fa)(fa)(fa)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬(shu)于連續(xu)(xu)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi),其特點是輸(shu)(shu)出量隨輸(shu)(shu)入量的(de)(de)變化(hua)而變化(hua),輸(shu)(shu)出量與輸(shu)(shu)入量之(zhi)間存(cun)在一定的(de)(de)比(bi)例關系(xi)。比(bi)例控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)閉(bi)環(huan)控(kong)(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)之(zhi)分。 意大利ATOS比例閥型號表: 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 |