意大利ATOS比例閥主要體現在以下幾點: 1.驅動裝(zhuang)(zhuang)置(zhi)不同。比例閥(fa)的驅動裝(zhuang)(zhuang)置(zhi)是(shi)比例電磁(ci)鐵;伺(si)服閥(fa)的驅動裝(zhuang)(zhuang)置(zhi)是(shi)力馬達(da)或力矩馬達(da); 2.性能參數不同。滯環、中位死區、頻寬(kuan)、過濾(lv)精度(du)等(deng)特(te)性不同,因此應用(yong)場合不同,伺服閥(fa)(fa)和伺服比(bi)例閥(fa)(fa)主要(yao)應用(yong)在(zai)閉(bi)環控制(zhi)系統,其它結構的比(bi)例閥(fa)(fa)主要(yao)應用(yong)在(zai)開環控系統及閉(bi)環速度(du)控制(zhi)系統; - 伺(si)服(fu)閥中(zhong)位(wei)沒有(you)死(si)區(qu),比(bi)例閥有(you)中(zhong)位(wei)死(si)區(qu);
- 伺服閥的頻響(響應頻率(lv))更高(gao),可以高(gao)達(da)200Hz左右,比例閥一般zui高(gao)幾十Hz;
- 伺服(fu)閥對液壓油(you)液的要(yao)求(qiu)更高,需要(yao)精過濾才行(xing),否(fou)則容易堵塞,比例閥要(yao)求(qiu)低(di)一些;
3.閥(fa)(fa)(fa)芯結(jie)構及(ji)加工精度不同。比例閥(fa)(fa)(fa)采用(yong)閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)體結(jie)構,閥(fa)(fa)(fa)體兼(jian)作閥(fa)(fa)(fa)套。伺服(fu)閥(fa)(fa)(fa)和伺服(fu)比例閥(fa)(fa)(fa)采用(yong)閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)套的(de)結(jie)構。 4.中位(wei)(wei)機能種類不同(tong)。比例換向(xiang)閥具有與(yu)普通換向(xiang)閥相似的中位(wei)(wei)機能,而伺(si)服閥中位(wei)(wei)機能只有O型(Rexroth產品(pin)的E型)。 5.閥的(de)額定壓(ya)降不同。 電(dian)氣比(bi)(bi)例(li)閥(fa)自動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分成(cheng)斷(duan)續控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)連(lian)續控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷(duan)續控(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開關(guan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統中(zhong)使用動(dong)作頻率較低的(de)(de)開關(guan)式(ON-OFF)的(de)(de)換向閥(fa)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣路的(de)(de)通斷(duan)。靠(kao)減(jian)壓閥(fa)來(lai)調節(jie)(jie)所需(xu)要(yao)(yao)的(de)(de)壓力,靠(kao)節(jie)(jie)流(liu)閥(fa)來(lai)調節(jie)(jie)所需(xu)要(yao)(yao)的(de)(de)流(liu)量。這種傳統的(de)(de)氣動(dong)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)統要(yao)(yao)想要(yao)(yao)有多個輸(shu)(shu)出(chu)力和(he)多個運動(dong)速度,就需(xu)要(yao)(yao)多個減(jian)壓閥(fa)、節(jie)(jie)流(liu)閥(fa)及換向閥(fa)。這樣,不僅(jin)元(yuan)件需(xu)要(yao)(yao)多,成(cheng)本高(gao),構成(cheng)系(xi)統復雜,且許多元(yuan)件都需(xu)要(yao)(yao)預先(xian)進行人工調節(jie)(jie)。電(dian)氣比(bi)(bi)例(li)閥(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連(lian)續控(kong)(kong)(kong)制(zhi)(zhi)(zhi),其(qi)特點(dian)是輸(shu)(shu)出(chu)量隨(sui)輸(shu)(shu)入(ru)量的(de)(de)變化(hua)而變化(hua),輸(shu)(shu)出(chu)量與輸(shu)(shu)入(ru)量之間(jian)存在(zai)一(yi)定的(de)(de)比(bi)(bi)例(li)關(guan)系(xi)。比(bi)(bi)例(li)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)有開環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和(he)閉環(huan)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)之分。 意大利ATOS比例閥型號表: LIMZA-A-1/180/M 20 LIMZA-A-3/180/M 40 LIMZO-A-3/210 LIMZO-A-4/210 LIMZO-A-5/315/P 30 LIMZO-AE-4/315 10 LIMZO-TER-4/210 50 LIMZO-TER-4/210/I LIQV-2 20 LIQV-2/K LIQZO-A-252S4 LIQZO-L-252L4 50 LIQZO-L-322L4 50 LIQZO-LE-402L4 50 LIQZO-LE-502L4 50 LIQZO-LE-632L4 51 LIQZO-T-252L4 LIQZO-T-252L4 50 /PE LIQZO-T-322L4 50 LIQZO-T-402L4 LIQZO-TE-322L4 50 LIRA-1/100 20 LIRA-1/210 20 LIRA-2/210/V 20 LIRA-3/100 LIRA-4/210/V 11 LIRZO-A-1/210 QVHZO-A-06/12 20 QVHZO-A-06/18 QVHZO-A-06/3 QVHZO-A-06/36 QVHZO-A-06/45 QVHZO-AE-06/3/I 10 QVHZO-AE-06/45/I QVHZO-T-06/12 31 QVHZO-T-06/3 31/WG QVHZO-TE-06/18 40 QVHZO-TE-06/18/I 40 QVHZO-TE-06/3 40 QVKMZOR-A-10/90/210/18 QVKZOR-A-10/65 QVKZOR-AE-10/90 10 QVKZOR-AES-BC-10/65 10? |