意大利ATOS比例閥主要體現在以下幾點： 1.驅(qu)動(dong)裝置(zhi)不同。比例(li)閥的驅(qu)動(dong)裝置(zhi)是(shi)比例(li)電磁鐵(tie)；伺(si)服閥的驅(qu)動(dong)裝置(zhi)是(shi)力馬(ma)達或力矩馬(ma)達； 2.性(xing)能參數(shu)不同。滯環(huan)、中位死(si)區(qu)、頻寬、過濾精(jing)度(du)等特性(xing)不同，因此應用(yong)場(chang)合不同，伺服閥和伺服比例(li)閥主要應用(yong)在閉環(huan)控制(zhi)系(xi)統，其它結構的(de)比例(li)閥主要應用(yong)在開環(huan)控系(xi)統及閉環(huan)速度(du)控制(zhi)系(xi)統； - 伺服閥(fa)中(zhong)位沒有死區，比例閥(fa)有中(zhong)位死區；
- 伺服閥的頻(pin)(pin)響(xiang)（響(xiang)應頻(pin)(pin)率(lv)）更高(gao)，可(ke)以高(gao)達200Hz左右(you)，比例閥一(yi)般(ban)zui高(gao)幾十Hz；
- 伺(si)服閥對液壓油液的要求更(geng)高，需要精(jing)過(guo)濾才行，否則容易堵塞，比例閥要求低一些；
3.閥(fa)(fa)(fa)芯結構及(ji)加工精(jing)度(du)不同。比例閥(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)體結構，閥(fa)(fa)(fa)體兼作(zuo)閥(fa)(fa)(fa)套。伺(si)服(fu)閥(fa)(fa)(fa)和伺(si)服(fu)比例閥(fa)(fa)(fa)采(cai)用閥(fa)(fa)(fa)芯+閥(fa)(fa)(fa)套的結構。 4.中位(wei)機能(neng)種(zhong)類不同。比例(li)換向閥具有與普通換向閥相似的(de)中位(wei)機能(neng)，而伺服閥中位(wei)機能(neng)只(zhi)有O型(xing)（Rexroth產(chan)品的(de)E型(xing)）。 5.閥的額定壓降不(bu)同。 電氣(qi)(qi)比例(li)閥自動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)可分成(cheng)斷(duan)(duan)續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和連(lian)續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。斷(duan)(duan)續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)即開關(guan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)。氣(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)中(zhong)使用(yong)動(dong)作頻率較(jiao)低的開關(guan)式(ON-OFF)的換向閥來(lai)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)氣(qi)(qi)路的通斷(duan)(duan)。靠減(jian)(jian)壓(ya)閥來(lai)調節(jie)所需(xu)(xu)要(yao)(yao)的壓(ya)力，靠節(jie)流閥來(lai)調節(jie)所需(xu)(xu)要(yao)(yao)的流量(liang)。這種傳統(tong)(tong)的氣(qi)(qi)動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)要(yao)(yao)想要(yao)(yao)有多個輸(shu)出(chu)力和多個運(yun)動(dong)速度，就需(xu)(xu)要(yao)(yao)多個減(jian)(jian)壓(ya)閥、節(jie)流閥及換向閥。這樣(yang)，不僅元件需(xu)(xu)要(yao)(yao)多，成(cheng)本(ben)高(gao)，構成(cheng)系統(tong)(tong)復(fu)雜，且許多元件都需(xu)(xu)要(yao)(yao)預先進行(xing)人(ren)工調節(jie)。電氣(qi)(qi)比例(li)閥控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)屬于連(lian)續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)，其特點是輸(shu)出(chu)量(liang)隨輸(shu)入量(liang)的變(bian)化(hua)(hua)而(er)變(bian)化(hua)(hua)，輸(shu)出(chu)量(liang)與輸(shu)入量(liang)之間存在一定的比例(li)關(guan)系。比例(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)有開環(huan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)和閉環(huan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)之分。 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 |
