關于什么是數字電液比例伺服閥以及它都用在什么設備上呢？今天比例伺服閥小編就跟大家分享一下，

電液伺服閥是電(dian)液伺服控(kong)制中的關(guan)鍵元件，它是一種接(jie)受模擬電(dian)信號后，相應輸出調制的流量(liang)和壓(ya)力的液壓(ya)控(kong)制閥。電(dian)液伺服閥具有動態響應快、控(kong)制精(jing)度高(gao)、使用壽命長等優點，已廣泛(fan)應用于(yu)航空、航天、艦船、冶(ye)金、化工等領(ling)域(yu)的電(dian)液伺服控(kong)制系統(tong)中。

目前電子化、數字化技術在電液伺服閥技術上的運用主要有兩種方式：其一，在電液伺服閥模擬控制元器件上加入D/A轉換裝置來實現其數字控制。隨著微電子技術的發展，可把控制元器件安裝在閥體內部，通過計算機程序來控制閥的性能，實現數字化補償等功能。但存在模擬電路容易產生零漂、溫漂，需加D/A 轉換接口等問題。其二，為直動式數(shu)(shu)字(zi)(zi)(zi)控(kong)(kong)制閥(fa)。通過用步進電機(ji)驅動(dong)閥(fa)芯，將輸入信號轉化(hua)成電機(ji)的(de)步進信號來(lai)控(kong)(kong)制伺服(fu)(fu)閥(fa)的(de)流量輸出(chu)。該閥(fa)具(ju)有(you)結構緊湊、速度(du)(du)及位置(zhi)開環可控(kong)(kong)及可直接數(shu)(shu)字(zi)(zi)(zi)控(kong)(kong)制等優點，被廣泛使(shi)用。但在實(shi)時性控(kong)(kong)制要(yao)求較高的(de)場合，如按常規的(de)步進方(fang)法(fa)，無法(fa)兼顧量化(hua)精度(du)(du)及響應(ying)速度(du)(du)的(de)要(yao)求。浙江工業大學采用了連續跟蹤控(kong)(kong)制的(de)辦法(fa)，消除了兩者之間的(de)矛盾，獲得了良好(hao)的(de)動(dong)態特性。此外還有(you)通過直流力矩電機(ji)直接驅動(dong)閥(fa)芯來(lai)實(shi)現數(shu)(shu)字(zi)(zi)(zi)控(kong)(kong)制等多種(zhong)控(kong)(kong)制方(fang)式或(huo)伺服(fu)(fu)閥(fa)結構改(gai)變等方(fang)法(fa)來(lai)形成眾多的(de)數(shu)(shu)字(zi)(zi)(zi)化(hua)伺服(fu)(fu)閥(fa)產品。

隨著各(ge)項技術(shu)水平(ping)的(de)(de)(de)(de)發展，通過采用(yong)(yong)(yong)新型(xing)的(de)(de)(de)(de)傳感(gan)器和(he)(he)計(ji)算(suan)(suan)機(ji)(ji)技術(shu)研制(zhi)(zhi)(zhi)(zhi)出機(ji)(ji)械、電子、傳感(gan)器及計(ji)算(suan)(suan)機(ji)(ji)自我管理（故障(zhang)診斷、故障(zhang)排除）為(wei)一體(ti)(ti)(ti)的(de)(de)(de)(de)智能(neng)化新型(xing)伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)。該類伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)可按(an)照(zhao)(zhao)系統(tong)(tong)(tong)的(de)(de)(de)(de)需要(yao)(yao)來確定控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)目標：速度、位置、加速度、力(li)或壓(ya)(ya)力(li)。同一臺伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)可以(yi)根據控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)要(yao)(yao)求設置成流(liu)量控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)、壓(ya)(ya)力(li)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)或流(liu)量/ 壓(ya)(ya)力(li)復合控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)。并(bing)且伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)的(de)(de)(de)(de)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)參(can)數(shu)(shu)，如流(liu)量增(zeng)(zeng)益(yi)、流(liu)量增(zeng)(zeng)益(yi)特性(xing)、零點等都可以(yi)根據控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)性(xing)能(neng)最(zui)優化原則進(jin)行(xing)設置。伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)自身的(de)(de)(de)(de)診斷信息、關鍵控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)參(can)數(shu)(shu)（包括工(gong)作環境參(can)數(shu)(shu)和(he)(he)伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)內(nei)部參(can)數(shu)(shu)）可以(yi)及時(shi)反饋給主(zhu)(zhu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)器；可以(yi)遠(yuan)距離(li)對伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)進(jin)行(xing)監控(kong)(kong)(kong)、診斷和(he)(he)遙控(kong)(kong)(kong)。在(zai)主(zhu)(zhu)機(ji)(ji)調(diao)試期間控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)工(gong)程(cheng)網版(ban)權所有(you)，可以(yi)通過總(zong)線端(duan)口下載(zai)或直接由(you)(you)上位機(ji)(ji)設置伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)的(de)(de)(de)(de)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)參(can)數(shu)(shu)，使伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)與(yu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)(tong)達到(dao)適(shi)宜匹配，優化控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)性(xing)能(neng)。而(er)伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)參(can)數(shu)(shu)的(de)(de)(de)(de)下載(zai)和(he)(he)更(geng)新，甚至(zhi)在(zai)主(zhu)(zhu)機(ji)(ji)運轉時(shi)也(ye)能(neng)進(jin)行(xing)。而(er)在(zai)伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)與(yu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)(tong)相匹配的(de)(de)(de)(de)技術(shu)應用(yong)(yong)(yong)發展中，嵌(qian)入(ru)式技術(shu)對于伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)已經成為(wei)現(xian)實(shi)。按(an)照(zhao)(zhao)嵌(qian)入(ru)式系統(tong)(tong)(tong)應定義為(wei)：“嵌(qian)入(ru)到(dao)對像體(ti)(ti)(ti)系中的(de)(de)(de)(de)專(zhuan)用(yong)(yong)(yong)計(ji)算(suan)(suan)機(ji)(ji)系統(tong)(tong)(tong)”。“嵌(qian)入(ru)性(xing)”、“專(zhuan)用(yong)(yong)(yong)性(xing)”與(yu)“計(ji)算(suan)(suan)機(ji)(ji)系統(tong)(tong)(tong)”是嵌(qian)入(ru)式系統(tong)(tong)(tong)的(de)(de)(de)(de)三個基本(ben)要(yao)(yao)素。它是在(zai)傳統(tong)(tong)(tong)的(de)(de)(de)(de)伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)中嵌(qian)入(ru)專(zhuan)用(yong)(yong)(yong)的(de)(de)(de)(de)微處理芯片和(he)(he)相應的(de)(de)(de)(de)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)(tong)，針(zhen)對客戶的(de)(de)(de)(de)具(ju)體(ti)(ti)(ti)應用(yong)(yong)(yong)要(yao)(yao)求而(er)構(gou)建(jian)成具(ju)有(you)最(zui)優控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)參(can)數(shu)(shu)的(de)(de)(de)(de)伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)并(bing)由(you)(you)閥(fa)(fa)(fa)自身的(de)(de)(de)(de)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)(tong)完(wan)成相應的(de)(de)(de)(de)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)任務(wu)（如各(ge)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)軸同步控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)），再嵌(qian)入(ru)到(dao)整(zheng)個的(de)(de)(de)(de)大控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)(tong)中去。從目前(qian)的(de)(de)(de)(de)技術(shu)發展和(he)(he)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統(tong)(tong)(tong)對伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)的(de)(de)(de)(de)要(yao)(yao)求看控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)工(gong)程(cheng)網版(ban)權所有(you)，伺(si)(si)(si)(si)(si)服(fu)(fu)(fu)(fu)閥(fa)(fa)(fa)的(de)(de)(de)(de)自診斷和(he)(he)自檢(jian)測(ce)功(gong)能(neng)應該有(you)更(geng)大的(de)(de)(de)(de)發展。