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電(dian)(dian)液(ye)(ye)(ye)(ye)伺(si)服(fu)閥(fa)(fa)的(de)(de)(de)(de)作用(yong)是(shi)將小功率(lv)的(de)(de)(de)(de)電(dian)(dian)信號(hao)(hao)(hao)轉(zhuan)換為閥(fa)(fa)的(de)(de)(de)(de)運動(dong)，以控(kong)(kong)制流向(xiang)液(ye)(ye)(ye)(ye)壓動(dong)力(li)機(ji)構(gou)的(de)(de)(de)(de)流量和(he)壓力(li)。因此(ci)，電(dian)(dian)液(ye)(ye)(ye)(ye)伺(si)服(fu)閥(fa)(fa)既是(shi)電(dian)(dian)液(ye)(ye)(ye)(ye)轉(zhuan)換元(yuan)件(jian)又是(shi)功率(lv)放(fang)大(da)元(yuan)件(jian)，它的(de)(de)(de)(de)性(xing)(xing)(xing)能(neng)對(dui)系(xi)(xi)統的(de)(de)(de)(de)特(te)性(xing)(xing)(xing)影響很(hen)(hen)大(da)，是(shi)電(dian)(dian)液(ye)(ye)(ye)(ye)伺(si)服(fu)系(xi)(xi)統中(zhong)的(de)(de)(de)(de)關鍵(jian)元(yuan)件(jian)。液(ye)(ye)(ye)(ye)壓動(dong)力(li)機(ji)構(gou)由液(ye)(ye)(ye)(ye)壓控(kong)(kong)制元(yuan)件(jian)、執行(xing)機(ji)構(gou)和(he)控(kong)(kong)制對(dui)象組成。液(ye)(ye)(ye)(ye)壓控(kong)(kong)制元(yuan)件(jian)常采(cai)用(yong)液(ye)(ye)(ye)(ye)壓控(kong)(kong)制閥(fa)(fa)或伺(si)服(fu)變(bian)量泵(beng)。常用(yong)的(de)(de)(de)(de)液(ye)(ye)(ye)(ye)壓執行(xing)機(ji)構(gou)有(you)液(ye)(ye)(ye)(ye)壓缸(gang)和(he)液(ye)(ye)(ye)(ye)壓馬達(da)。液(ye)(ye)(ye)(ye)壓動(dong)力(li)機(ji)構(gou)的(de)(de)(de)(de)動(dong)態特(te)性(xing)(xing)(xing)在很(hen)(hen)大(da)程度上決(jue)定了電(dian)(dian)液(ye)(ye)(ye)(ye)伺(si)服(fu)系(xi)(xi)統的(de)(de)(de)(de)性(xing)(xing)(xing)能(neng)。 　　為改善系(xi)(xi)統性(xing)(xing)(xing)能(neng)，電(dian)(dian)液(ye)(ye)(ye)(ye)伺(si)服(fu)系(xi)(xi)統常采(cai)用(yong)串聯(lian)滯后校正(zheng)來提高低(di)頻(pin)增益(yi)，降(jiang)低(di)系(xi)(xi)統的(de)(de)(de)(de)穩態誤差。此(ci)外，采(cai)用(yong)加速度或壓力(li)負反饋校正(zheng)則是(shi)提高阻尼性(xing)(xing)(xing)能(neng)而又不(bu)降(jiang)低(di)效(xiao)率(lv)的(de)(de)(de)(de)有(you)效(xiao)辦法。 常規(gui)(gui)供(gong)應型(xing)(xing)號(hao)(hao)(hao)——優勢型(xing)(xing)號(hao)(hao)(hao) 型(xing)(xing)號(hao)(hao)(hao)4WRH, 4WRZ, 4WRZE 比例方(fang)向(xiang)閥(fa)(fa)，先導(dao)(dao)式，無電(dian)(dian)位置反饋 規(gui)(gui)格(ge)10至52 安(an)裝面按ISO 4401 控(kong)(kong)制流量的(de)(de)(de)(de)方(fang)向(xiang)和(he)大(da)小 通(tong)過3通(tong)減壓閥(fa)(fa)進行(xing)先導(dao)(dao)控(kong)(kong)制 彈簧對(dui)中(zhong)和(he)主閥(fa)(fa)芯的(de)(de)(de)(de)反轉(zhuan)動(dong)特(te)點 不(bu)同閥(fa)(fa)芯可遮蓋(gai) 用(yong)于4WRZE的(de)(de)(de)(de)集成控(kong)(kong)制電(dian)(dian)氣元(yuan)件(jian)（OBE）。

Rexroth力士樂換向閥技術參數：

結構特點(dian) 滑閥，零(ling)遮蓋

先導 內部

密封原理 軟密封

工作壓力范圍 3 bar / 8 bar

環境溫度 z小值/zui大值 -10°C / +50°C

z低/z高介(jie)質溫(wen)度 -10°C / +50°C

介質 壓縮空氣

顆粒(li)大小 max. 5 µm

壓縮空氣中的含(han)油(you)量 0 mg/m3 - 5 mg/m3

 防護等級 帶(dai)有接線盒 / 插頭 IP 50

保護電路 Z-二(er)極管(guan)

狀態顯示 發光二極管 黃(huang)色

暫載率 100 %

開機時間 9 ms

關機時間 21 ms

無用(yong)發射符合 EN 61000-6-4:2002

抗干擾性符(fu)合 IEC 61000-6-2:2005

安裝螺釘 M3

擰緊螺栓的z小扭力 0,5 Nm

材料:

外殼(ke)  聚酰胺; 聚甲醛

Rexroth電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)在(zai)(zai)液(ye)路(lu)系統中用來實現(xian)液(ye)路(lu)的(de)通(tong)斷(duan)或液(ye)流方向的(de)改(gai)變，它一般具(ju)有(you)(you)一個(ge)(ge)(ge)可以(yi)在(zai)(zai)線圈(quan)電(dian)(dian)(dian)(dian)磁(ci)(ci)力驅(qu)動(dong)下滑動(dong)的(de)閥(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)(xin)，閥(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)(xin)在(zai)(zai)不(bu)同(tong)的(de)位(wei)置(zhi)(zhi)時(shi)，電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)的(de)通(tong)路(lu)也(ye)就(jiu)不(bu)同(tong)。閥(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)(xin)的(de)工(gong)作(zuo)位(wei)置(zhi)(zhi)有(you)(you)幾個(ge)(ge)(ge)，該電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)就(jiu)叫(jiao)(jiao)幾位(wei)電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)：閥(fa)(fa)(fa)(fa)(fa)體上(shang)的(de)接(jie)口(kou)，也(ye)就(jiu)是電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)的(de)通(tong)路(lu)數，有(you)(you)幾個(ge)(ge)(ge)通(tong)路(lu)口(kou)，該電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)就(jiu)叫(jiao)(jiao)幾通(tong)電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)。電(dian)(dian)(dian)(dian)磁(ci)(ci)閥(fa)(fa)(fa)(fa)(fa)安裝后，一般所有(you)(you)接(jie)口(kou)都應該是連接(jie)好了的(de)，所謂工(gong)作(zuo)位(wei)置(zhi)(zhi)指的(de)是閥(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)(xin)的(de)位(wei)置(zhi)(zhi)。閥(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)(xin)在(zai)(zai)線圈(quan)不(bu)通(tong)電(dian)(dian)(dian)(dian)時(shi)處在(zai)(zai)甲位(wei)置(zhi)(zhi)，在(zai)(zai)線圈(quan)通(tong)電(dian)(dian)(dian)(dian)時(shi)處在(zai)(zai)乙位(wei)置(zhi)(zhi)，閥(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)(xin)在(zai)(zai)不(bu)同(tong)位(wei)置(zhi)(zhi)時(shi)，對(dui)各接(jie)口(kou)起到或接(jie)通(tong)或封閉(bi)的(de)作(zuo)用。