意大利ATOS比例閥主要體現在以下幾點: 1.驅(qu)動裝(zhuang)置(zhi)不同。比(bi)例(li)閥(fa)的驅(qu)動裝(zhuang)置(zhi)是(shi)(shi)比(bi)例(li)電磁(ci)鐵;伺服閥(fa)的驅(qu)動裝(zhuang)置(zhi)是(shi)(shi)力馬(ma)達或力矩馬(ma)達; 2.性(xing)能參數不同(tong)。滯(zhi)環、中(zhong)位死(si)區、頻寬、過(guo)濾精度等特性(xing)不同(tong),因(yin)此(ci)應用(yong)場合(he)不同(tong),伺(si)服閥和伺(si)服比(bi)例(li)閥主要(yao)應用(yong)在(zai)閉(bi)環控(kong)制系統(tong),其它結構的比(bi)例(li)閥主要(yao)應用(yong)在(zai)開環控(kong)系統(tong)及閉(bi)環速度控(kong)制系統(tong); - 伺服閥(fa)中位沒(mei)有死區(qu),比例閥(fa)有中位死區(qu);
- 伺(si)服閥(fa)(fa)的(de)頻響(響應頻率)更高,可以高達200Hz左右,比(bi)例閥(fa)(fa)一般zui高幾十Hz;
- 伺服閥(fa)對(dui)液(ye)壓(ya)油(you)液(ye)的(de)要求更(geng)高(gao),需(xu)要精過濾才行,否則容易堵塞,比例閥(fa)要求低一些(xie);
3.閥(fa)芯(xin)(xin)結(jie)構及加工精度不同。比例(li)閥(fa)采用閥(fa)芯(xin)(xin)+閥(fa)體結(jie)構,閥(fa)體兼作閥(fa)套。伺服(fu)閥(fa)和伺服(fu)比例(li)閥(fa)采用閥(fa)芯(xin)(xin)+閥(fa)套的結(jie)構。 4.中位機(ji)能(neng)種類不同。比例(li)換向閥(fa)具有(you)與普(pu)通換向閥(fa)相似的(de)中位機(ji)能(neng),而伺服閥(fa)中位機(ji)能(neng)只有(you)O型(Rexroth產品的(de)E型)。 5.閥的額定壓降不同。 電氣比(bi)例閥(fa)(fa)自動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)可分成(cheng)斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)。斷續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi)即開(kai)(kai)關(guan)控(kong)(kong)(kong)(kong)制(zhi)(zhi)。氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)系統(tong)中(zhong)使用動(dong)作頻(pin)率較低的(de)開(kai)(kai)關(guan)式(shi)(ON-OFF)的(de)換向(xiang)閥(fa)(fa)來(lai)控(kong)(kong)(kong)(kong)制(zhi)(zhi)氣路的(de)通斷。靠(kao)減壓(ya)閥(fa)(fa)來(lai)調節(jie)所需(xu)(xu)要(yao)的(de)壓(ya)力,靠(kao)節(jie)流(liu)(liu)閥(fa)(fa)來(lai)調節(jie)所需(xu)(xu)要(yao)的(de)流(liu)(liu)量(liang)(liang)。這(zhe)種傳統(tong)的(de)氣動(dong)控(kong)(kong)(kong)(kong)制(zhi)(zhi)系統(tong)要(yao)想要(yao)有多(duo)個(ge)(ge)(ge)輸(shu)(shu)(shu)出(chu)力和(he)多(duo)個(ge)(ge)(ge)運動(dong)速(su)度,就(jiu)需(xu)(xu)要(yao)多(duo)個(ge)(ge)(ge)減壓(ya)閥(fa)(fa)、節(jie)流(liu)(liu)閥(fa)(fa)及換向(xiang)閥(fa)(fa)。這(zhe)樣,不僅(jin)元件(jian)需(xu)(xu)要(yao)多(duo),成(cheng)本高(gao),構成(cheng)系統(tong)復雜(za),且許(xu)多(duo)元件(jian)都(dou)需(xu)(xu)要(yao)預先進行人(ren)工調節(jie)。電氣比(bi)例閥(fa)(fa)控(kong)(kong)(kong)(kong)制(zhi)(zhi)屬于連續(xu)控(kong)(kong)(kong)(kong)制(zhi)(zhi),其特點是(shi)輸(shu)(shu)(shu)出(chu)量(liang)(liang)隨輸(shu)(shu)(shu)入(ru)量(liang)(liang)的(de)變化(hua)而變化(hua),輸(shu)(shu)(shu)出(chu)量(liang)(liang)與輸(shu)(shu)(shu)入(ru)量(liang)(liang)之間(jian)存在一定的(de)比(bi)例關(guan)系。比(bi)例控(kong)(kong)(kong)(kong)制(zhi)(zhi)有開(kai)(kai)環控(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)閉環控(kong)(kong)(kong)(kong)制(zhi)(zhi)之分。 意大利ATOS比例閥型號(hao)表: DKZOR-A-151-S5 DKZOR-A-151-S5/18 40 DKZOR-A-151-S5/B DKZOR-A-153-L5/B DKZOR-A-171-D5 40 DKZOR-A-171-L5 DKZOR-A-171-S5 DKZOR-A-171-S5/18 DKZOR-A-173-D5 DKZOR-A-173-L5 DKZOR-A-173-L5/18 40 DKZOR-A-173-L5/Y DKZOR-A-173-S3 DKZOR-A-173-S5 DKZOR-A-173-S5/18 DKZOR-AE-171-L5 10 DKZOR-AE-171-S5 DKZOR-AE-171-S5 10/WG DKZOR-AE-171-S5/Y 10 DKZOR-AE-173-D5 10 DKZOR-AE-173-L5 10 DKZORC-A-151-S5/18 DKZOR-T-151-L5 DKZOR-T-151-L5/Y DKZOR-T-153-L5 DKZOR-T-171-D5 DKZOR-T-171-L5 DKZOR-T-171-S5 DKZOR-T-171-S5/Y DKZOR-T-173-L5 40 DKZOR-TE-170-L5 40 DKZOR-TE-171-L5 DKZOR-TE-171-L5/I 40 DKZOR-TE-171-S5 |