意大利ATOS比例閥主要體現在以下幾點: 1.驅動裝(zhuang)置(zhi)(zhi)不同。比例閥的驅動裝(zhuang)置(zhi)(zhi)是(shi)比例電磁鐵;伺服閥的驅動裝(zhuang)置(zhi)(zhi)是(shi)力馬達或力矩馬達; 2.性能參(can)數(shu)不同(tong)。滯環(huan)、中位死區(qu)、頻(pin)寬、過濾(lv)精度等特(te)性不同(tong),因此應(ying)(ying)用場(chang)合不同(tong),伺服(fu)閥(fa)和伺服(fu)比例閥(fa)主要應(ying)(ying)用在閉環(huan)控(kong)制(zhi)系統,其它結構的比例閥(fa)主要應(ying)(ying)用在開環(huan)控(kong)系統及閉環(huan)速度控(kong)制(zhi)系統; - 伺服閥中位沒有(you)死(si)區,比例(li)閥有(you)中位死(si)區;
- 伺服閥的頻響(響應頻率)更(geng)高(gao)(gao),可(ke)以(yi)高(gao)(gao)達200Hz左右,比例(li)閥一般zui高(gao)(gao)幾十Hz;
- 伺服閥對(dui)液(ye)壓油液(ye)的要求更高(gao),需要精過(guo)濾才行,否(fou)則容易堵塞,比例閥要求低一些;
3.閥(fa)(fa)(fa)芯結構及加工精(jing)度(du)不同。比例閥(fa)(fa)(fa)采用(yong)閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)體結構,閥(fa)(fa)(fa)體兼作閥(fa)(fa)(fa)套(tao)。伺(si)(si)服閥(fa)(fa)(fa)和伺(si)(si)服比例閥(fa)(fa)(fa)采用(yong)閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)套(tao)的(de)結構。 4.中(zhong)位(wei)機能種類不同。比(bi)例(li)換(huan)向(xiang)(xiang)閥(fa)具有與普(pu)通換(huan)向(xiang)(xiang)閥(fa)相似(si)的中(zhong)位(wei)機能,而伺(si)服閥(fa)中(zhong)位(wei)機能只(zhi)有O型(Rexroth產品(pin)的E型)。 5.閥(fa)的額定壓降不同。 電氣比例閥自動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)可分成斷續(xu)(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)和連(lian)續(xu)(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。斷續(xu)(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)即開(kai)關(guan)(guan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)。氣動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)(xi)統中使(shi)用動(dong)(dong)作頻率(lv)較(jiao)低的(de)(de)開(kai)關(guan)(guan)式(ON-OFF)的(de)(de)換向閥來(lai)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)氣路的(de)(de)通斷。靠(kao)(kao)減壓閥來(lai)調節(jie)(jie)所需(xu)要(yao)的(de)(de)壓力(li),靠(kao)(kao)節(jie)(jie)流(liu)(liu)閥來(lai)調節(jie)(jie)所需(xu)要(yao)的(de)(de)流(liu)(liu)量。這(zhe)(zhe)種傳統的(de)(de)氣動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)系(xi)(xi)統要(yao)想要(yao)有(you)多個輸(shu)出(chu)(chu)(chu)力(li)和多個運動(dong)(dong)速度,就需(xu)要(yao)多個減壓閥、節(jie)(jie)流(liu)(liu)閥及(ji)換向閥。這(zhe)(zhe)樣,不僅元件需(xu)要(yao)多,成本高,構成系(xi)(xi)統復雜,且許多元件都需(xu)要(yao)預(yu)先進行人工調節(jie)(jie)。電氣比例閥控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)屬于連(lian)續(xu)(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi),其特(te)點是輸(shu)出(chu)(chu)(chu)量隨(sui)輸(shu)入(ru)量的(de)(de)變化而變化,輸(shu)出(chu)(chu)(chu)量與輸(shu)入(ru)量之(zhi)間存(cun)在一(yi)定的(de)(de)比例關(guan)(guan)系(xi)(xi)。比例控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)有(you)開(kai)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(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 |