定位器SAMSON薩姆森結構材質

功能參數:

按(an)動作的(de)方向(xiang)可分為(wei)單向(xiang)閥門(men)定(ding)位(wei)器(qi)和雙向(xiang)閥門(men)定(ding)位(wei)器(qi)。單向(xiang)閥門(men)定(ding)位(wei)器(qi)用(yong)于活(huo)塞(sai)式(shi)執行(xing)機構時，閥門(men)定(ding)位(wei)器(qi)只有一個方向(xiang)起(qi)作用(yong)，雙向(xiang)閥門(men)定(ding)位(wei)器(qi)作用(yong)在活(huo)塞(sai)式(shi)執行(xing)機構氣缸的(de)兩側，在兩個方向(xiang)起(qi)作用(yong)。

按閥(fa)門定(ding)(ding)位(wei)器是否(fou)帶(dai)CPU可(ke)分為普(pu)通(tong)(tong)電氣(qi)(qi)閥(fa)門定(ding)(ding)位(wei)器和智能(neng)(neng)電氣(qi)(qi)閥(fa)門定(ding)(ding)位(wei)器。普(pu)通(tong)(tong)電氣(qi)(qi)閥(fa)門定(ding)(ding)位(wei)器沒(mei)有CPU，因此，不(bu)具有智能(neng)(neng)，不(bu)能(neng)(neng)處(chu)理有關(guan)的智能(neng)(neng)運(yun)(yun)算。智能(neng)(neng)電氣(qi)(qi)閥(fa)門定(ding)(ding)位(wei)器帶(dai)CPU，可(ke)處(chu)理有關(guan)智能(neng)(neng)運(yun)(yun)算，例如，可(ke)進行前向通(tong)(tong)道的非線(xian)性補償等(deng)，現(xian)場總線(xian)電氣(qi)(qi)閥(fa)門定(ding)(ding)位(wei)器還可(ke)帶(dai)PID等(deng)功(gong)能(neng)(neng)模塊，實現(xian)相應(ying)的運(yun)(yun)算。 按反饋(kui)信號的檢測方法也可(ke)進行分類。

按閥(fa)門定(ding)位器輸入(ru)信(xin)(xin)(xin)(xin)號(hao)是(shi)模擬(ni)信(xin)(xin)(xin)(xin)號(hao)或(huo)數字(zi)信(xin)(xin)(xin)(xin)號(hao)，可分為普(pu)(pu)通閥(fa)門定(ding)位器和現(xian)場(chang)總(zong)線電氣閥(fa)門定(ding)位器。普(pu)(pu)通閥(fa)門定(ding)位器的輸入(ru)信(xin)(xin)(xin)(xin)號(hao)是(shi)模擬(ni)氣壓(ya)或(huo)電流、電壓(ya)信(xin)(xin)(xin)(xin)號(hao)，現(xian)場(chang)總(zong)線電氣閥(fa)門定(ding)位器的輸入(ru)信(xin)(xin)(xin)(xin)號(hao)是(shi)現(xian)場(chang)總(zong)線的數字(zi)信(xin)(xin)(xin)(xin)號(hao)。

按閥(fa)門(men)定(ding)位(wei)器(qi)輸(shu)出和輸(shu)入信號(hao)的(de)增(zeng)(zeng)益(yi)符號(hao)分為(wei)(wei)正(zheng)(zheng)作(zuo)(zuo)用(yong)閥(fa)門(men)定(ding)位(wei)器(qi)和反(fan)(fan)作(zuo)(zuo)用(yong)閥(fa)門(men)定(ding)位(wei)器(qi)。正(zheng)(zheng)作(zuo)(zuo)用(yong)閥(fa)門(men)定(ding)位(wei)器(qi)的(de)輸(shu)入信號(hao)增(zeng)(zeng)加(jia)時，輸(shu)出信號(hao)也增(zeng)(zeng)加(jia)，因(yin)此，增(zeng)(zeng)益(yi)為(wei)(wei)正(zheng)(zheng)。反(fan)(fan)作(zuo)(zuo)用(yong)閥(fa)門(men)定(ding)位(wei)器(qi)的(de)輸(shu)入信號(hao)增(zeng)(zeng)加(jia)時，輸(shu)出信號(hao)減小，因(yin)此，增(zeng)(zeng)益(yi)為(wei)(wei)負。

電氣閥門(men)定(ding)位(wei)(wei)(wei)器(qi)(qi)是控(kong)制(zhi)閥的(de)主(zhu)要(yao)附件.它將閥桿(gan)(gan)位(wei)(wei)(wei)移(yi)信(xin)(xin)號(hao)(hao)作(zuo)(zuo)為(wei)輸(shu)(shu)(shu)(shu)入的(de)反饋測量(liang)信(xin)(xin)號(hao)(hao),以控(kong)制(zhi)器(qi)(qi)輸(shu)(shu)(shu)(shu)出(chu)信(xin)(xin)號(hao)(hao)作(zuo)(zuo)為(wei)設定(ding)信(xin)(xin)號(hao)(hao)，進(jin)行(xing)比較，當兩者有(you)偏差時，改變其到執(zhi)(zhi)行(xing)機構(gou)的(de)輸(shu)(shu)(shu)(shu)出(chu)信(xin)(xin)號(hao)(hao)，使執(zhi)(zhi)行(xing)機構(gou)動(dong)作(zuo)(zuo)，建立了閥桿(gan)(gan)位(wei)(wei)(wei)移(yi)倍與(yu)控(kong)制(zhi)器(qi)(qi)輸(shu)(shu)(shu)(shu)出(chu)信(xin)(xin)號(hao)(hao)之(zhi)間的(de)一一對應關系。因此，閥門(men)定(ding)位(wei)(wei)(wei)器(qi)(qi)組成以閥桿(gan)(gan)位(wei)(wei)(wei)移(yi)為(wei)測量(liang)信(xin)(xin)號(hao)(hao)，以控(kong)制(zhi)器(qi)(qi)輸(shu)(shu)(shu)(shu)出(chu)為(wei)設定(ding)信(xin)(xin)號(hao)(hao)的(de)反饋控(kong)制(zhi)系統(tong)。該控(kong)制(zhi)系統(tong)的(de)操(cao)縱變量(liang)是閥門(men)定(ding)位(wei)(wei)(wei)器(qi)(qi)去執(zhi)(zhi)行(xing)機構(gou)的(de)輸(shu)(shu)(shu)(shu)出(chu)信(xin)(xin)號(hao)(hao)。

閥(fa)(fa)門(men)(men)(men)(men)(men)定(ding)(ding)(ding)位(wei)器(qi)(qi)按輸入(ru)信(xin)(xin)號分為氣(qi)動(dong)(dong)閥(fa)(fa)門(men)(men)(men)(men)(men)定(ding)(ding)(ding)位(wei)器(qi)(qi)、電(dian)(dian)氣(qi)閥(fa)(fa)門(men)(men)(men)(men)(men)定(ding)(ding)(ding)位(wei)器(qi)(qi)和(he)智能閥(fa)(fa)門(men)(men)(men)(men)(men)定(ding)(ding)(ding)位(wei)器(qi)(qi)。氣(qi)動(dong)(dong)閥(fa)(fa)門(men)(men)(men)(men)(men)定(ding)(ding)(ding)位(wei)器(qi)(qi)的(de)(de)(de)(de)輸入(ru)信(xin)(xin)號是(shi)標準(zhun)氣(qi)信(xin)(xin)號，例如，20~100kPa氣(qi)信(xin)(xin)號，其輸出(chu)(chu)(chu)信(xin)(xin)號也(ye)是(shi)標準(zhun)的(de)(de)(de)(de)氣(qi)信(xin)(xin)號。電(dian)(dian)氣(qi)閥(fa)(fa)門(men)(men)(men)(men)(men)定(ding)(ding)(ding)位(wei)器(qi)(qi)的(de)(de)(de)(de)輸入(ru)信(xin)(xin)號是(shi)標準(zhun)電(dian)(dian)流或電(dian)(dian)壓信(xin)(xin)號，例如，4~20mA電(dian)(dian)流信(xin)(xin)號或1~5V電(dian)(dian)壓信(xin)(xin)號等，在電(dian)(dian)氣(qi)閥(fa)(fa)門(men)(men)(men)(men)(men)定(ding)(ding)(ding)位(wei)器(qi)(qi)內部將電(dian)(dian)信(xin)(xin)號轉(zhuan)換為電(dian)(dian)磁力(li)，然后輸出(chu)(chu)(chu)氣(qi)信(xin)(xin)號到(dao)撥動(dong)(dong)控制(zhi)(zhi)(zhi)閥(fa)(fa)。智能電(dian)(dian)氣(qi)閥(fa)(fa)門(men)(men)(men)(men)(men)定(ding)(ding)(ding)位(wei)器(qi)(qi)它將控制(zhi)(zhi)(zhi)室輸出(chu)(chu)(chu)的(de)(de)(de)(de)電(dian)(dian)流信(xin)(xin)號轉(zhuan)換成(cheng)驅動(dong)(dong)調節閥(fa)(fa)的(de)(de)(de)(de)氣(qi)信(xin)(xin)號，根(gen)據調節閥(fa)(fa)工作時閥(fa)(fa)桿摩擦力(li)，抵消介質壓力(li)波(bo)動(dong)(dong)而產生(sheng)的(de)(de)(de)(de)不平衡力(li)，使(shi)閥(fa)(fa)門(men)(men)(men)(men)(men)開度對應于控制(zhi)(zhi)(zhi)室輸出(chu)(chu)(chu)的(de)(de)(de)(de)電(dian)(dian)流信(xin)(xin)號。并且可以進(jin)行(xing)智能組(zu)態設置相應的(de)(de)(de)(de)參數，達到(dao)改善控制(zhi)(zhi)(zhi)閥(fa)(fa)性能的(de)(de)(de)(de)目的(de)(de)(de)(de)。

定位器SAMSON薩姆森結構材質