意大利ATOS比例閥主要體現在以下幾點: 1.驅動裝(zhuang)置不同。比(bi)例閥的(de)(de)驅動裝(zhuang)置是比(bi)例電磁鐵;伺服閥的(de)(de)驅動裝(zhuang)置是力(li)馬達或力(li)矩馬達; 2.性(xing)能參數不(bu)(bu)同(tong)(tong)(tong)。滯環(huan)、中(zhong)位死區、頻(pin)寬、過濾精度等特性(xing)不(bu)(bu)同(tong)(tong)(tong),因此應用(yong)場(chang)合不(bu)(bu)同(tong)(tong)(tong),伺服(fu)閥和伺服(fu)比例閥主(zhu)要(yao)應用(yong)在閉(bi)環(huan)控(kong)制系統(tong),其它結構的比例閥主(zhu)要(yao)應用(yong)在開環(huan)控(kong)系統(tong)及(ji)閉(bi)環(huan)速度控(kong)制系統(tong); - 伺服閥中位沒有死區,比(bi)例(li)閥有中位死區;
- 伺服閥的(de)頻響(xiang)(響(xiang)應頻率)更高,可以高達200Hz左右(you),比(bi)例閥一般zui高幾(ji)十Hz;
- 伺服閥對液壓油液的(de)要(yao)求(qiu)更高,需要(yao)精過濾才行(xing),否則(ze)容易堵(du)塞,比(bi)例(li)閥要(yao)求(qiu)低(di)一些;
3.閥(fa)(fa)(fa)芯(xin)結構(gou)及加工精度不同(tong)。比例(li)閥(fa)(fa)(fa)采用閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)體(ti)結構(gou),閥(fa)(fa)(fa)體(ti)兼作閥(fa)(fa)(fa)套。伺服閥(fa)(fa)(fa)和伺服比例(li)閥(fa)(fa)(fa)采用閥(fa)(fa)(fa)芯(xin)+閥(fa)(fa)(fa)套的結構(gou)。 4.中位機(ji)能種類不同(tong)。比例(li)換向閥具有(you)與普通(tong)換向閥相似(si)的中位機(ji)能,而伺服閥中位機(ji)能只有(you)O型(Rexroth產品的E型)。 5.閥(fa)的額定壓(ya)降不同。 電(dian)氣(qi)比(bi)(bi)例閥(fa)自動(dong)控(kong)(kong)(kong)制(zhi)可分成(cheng)斷續(xu)控(kong)(kong)(kong)制(zhi)和(he)連(lian)續(xu)控(kong)(kong)(kong)制(zhi)。斷續(xu)控(kong)(kong)(kong)制(zhi)即開關控(kong)(kong)(kong)制(zhi)。氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)系(xi)(xi)統中使用(yong)動(dong)作頻(pin)率較低的(de)(de)(de)開關式(ON-OFF)的(de)(de)(de)換向閥(fa)來(lai)控(kong)(kong)(kong)制(zhi)氣(qi)路的(de)(de)(de)通斷。靠(kao)減壓(ya)閥(fa)來(lai)調節(jie)所需(xu)要(yao)(yao)(yao)的(de)(de)(de)壓(ya)力,靠(kao)節(jie)流閥(fa)來(lai)調節(jie)所需(xu)要(yao)(yao)(yao)的(de)(de)(de)流量。這種傳統的(de)(de)(de)氣(qi)動(dong)控(kong)(kong)(kong)制(zhi)系(xi)(xi)統要(yao)(yao)(yao)想(xiang)要(yao)(yao)(yao)有多個輸(shu)(shu)(shu)出(chu)(chu)力和(he)多個運動(dong)速(su)度,就需(xu)要(yao)(yao)(yao)多個減壓(ya)閥(fa)、節(jie)流閥(fa)及(ji)換向閥(fa)。這樣,不僅元件需(xu)要(yao)(yao)(yao)多,成(cheng)本高,構成(cheng)系(xi)(xi)統復雜,且(qie)許多元件都需(xu)要(yao)(yao)(yao)預(yu)先進行人工調節(jie)。電(dian)氣(qi)比(bi)(bi)例閥(fa)控(kong)(kong)(kong)制(zhi)屬于連(lian)續(xu)控(kong)(kong)(kong)制(zhi),其特點是輸(shu)(shu)(shu)出(chu)(chu)量隨輸(shu)(shu)(shu)入量的(de)(de)(de)變化(hua)而變化(hua),輸(shu)(shu)(shu)出(chu)(chu)量與輸(shu)(shu)(shu)入量之間存(cun)在一定的(de)(de)(de)比(bi)(bi)例關系(xi)(xi)。比(bi)(bi)例控(kong)(kong)(kong)制(zhi)有開環控(kong)(kong)(kong)制(zhi)和(he)閉環控(kong)(kong)(kong)制(zhi)之分。 意大利ATOS比例閥型號表(biao): 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 |