意大利ATOS比例閥主要體現在以下幾點： 1.驅動(dong)裝置不同。比例閥(fa)的驅動(dong)裝置是比例電磁鐵；伺服閥(fa)的驅動(dong)裝置是力馬(ma)(ma)達(da)或力矩馬(ma)(ma)達(da)； 2.性能參數不(bu)(bu)同。滯環(huan)(huan)(huan)、中位死區、頻寬、過濾精度等(deng)特性不(bu)(bu)同，因(yin)此應(ying)用(yong)場合不(bu)(bu)同，伺服(fu)閥和(he)伺服(fu)比(bi)例(li)閥主(zhu)要應(ying)用(yong)在閉環(huan)(huan)(huan)控(kong)制(zhi)(zhi)系統(tong)(tong)(tong)，其(qi)它(ta)結(jie)構(gou)的比(bi)例(li)閥主(zhu)要應(ying)用(yong)在開環(huan)(huan)(huan)控(kong)系統(tong)(tong)(tong)及閉環(huan)(huan)(huan)速度控(kong)制(zhi)(zhi)系統(tong)(tong)(tong)； - 伺(si)服閥(fa)中位(wei)沒有死(si)區，比(bi)例閥(fa)有中位(wei)死(si)區；
- 伺服閥(fa)的頻(pin)(pin)響（響應頻(pin)(pin)率）更高(gao)，可以高(gao)達(da)200Hz左右，比例閥(fa)一般zui高(gao)幾十Hz；
- 伺(si)服(fu)閥對液壓油液的要(yao)求更高，需(xu)要(yao)精(jing)過(guo)濾才行，否則容(rong)易堵(du)塞(sai)，比例閥要(yao)求低一些；
3.閥(fa)(fa)(fa)芯(xin)結構及加工精度不同。比(bi)例閥(fa)(fa)(fa)采用(yong)閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)體(ti)結構，閥(fa)(fa)(fa)體(ti)兼作閥(fa)(fa)(fa)套。伺服閥(fa)(fa)(fa)和伺服比(bi)例閥(fa)(fa)(fa)采用(yong)閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)套的結構。 4.中(zhong)位機能(neng)種類不同。比(bi)例(li)換(huan)向閥具有與普通換(huan)向閥相似(si)的(de)中(zhong)位機能(neng)，而伺服閥中(zhong)位機能(neng)只有O型(xing)（Rexroth產品的(de)E型(xing)）。 5.閥的額定壓降不同(tong)。 電(dian)氣(qi)(qi)比(bi)(bi)例(li)閥自(zi)動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)可分成斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)和連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)即(ji)開關(guan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)。氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)系(xi)統中使用動(dong)(dong)作頻率(lv)較低的(de)(de)開關(guan)式(ON-OFF)的(de)(de)換(huan)向閥來控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)氣(qi)(qi)路的(de)(de)通斷。靠(kao)減(jian)壓閥來調節(jie)(jie)所需(xu)(xu)(xu)要的(de)(de)壓力(li)，靠(kao)節(jie)(jie)流閥來調節(jie)(jie)所需(xu)(xu)(xu)要的(de)(de)流量(liang)。這(zhe)種傳統的(de)(de)氣(qi)(qi)動(dong)(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)系(xi)統要想要有多(duo)(duo)個輸出力(li)和多(duo)(duo)個運動(dong)(dong)速度(du)，就需(xu)(xu)(xu)要多(duo)(duo)個減(jian)壓閥、節(jie)(jie)流閥及換(huan)向閥。這(zhe)樣，不(bu)僅元(yuan)件(jian)需(xu)(xu)(xu)要多(duo)(duo)，成本高(gao)，構(gou)成系(xi)統復雜，且(qie)許多(duo)(duo)元(yuan)件(jian)都需(xu)(xu)(xu)要預(yu)先(xian)進行(xing)人(ren)工調節(jie)(jie)。電(dian)氣(qi)(qi)比(bi)(bi)例(li)閥控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)屬于連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)，其特點(dian)是輸出量(liang)隨輸入量(liang)的(de)(de)變(bian)化(hua)而變(bian)化(hua)，輸出量(liang)與(yu)輸入量(liang)之間存在一(yi)定的(de)(de)比(bi)(bi)例(li)關(guan)系(xi)。比(bi)(bi)例(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)有開環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)和閉環控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)(zhi)之分。 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 |
