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1.工作原理(li)--簡介
  它是一種能把物理量(liang)(liang)(liang)(liang)或化學量(liang)(liang)(liang)(liang)轉變成便(bian)于利用(yong)的(de)(de)電信(xin)(xin)號的(de)(de)器件(jian)，通常(chang)由敏感元件(jian)和(he)轉換元件(jian)組(zu)成。電工委員(yuan)會(IEC)的(de)(de)定義為:“傳(chuan)感器是測量(liang)(liang)(liang)(liang)系統(tong)中(zhong)的(de)(de)一種前(qian)置部件(jian),它將輸入變量(liang)(liang)(liang)(liang)轉換成可供(gong)測量(liang)(liang)(liang)(liang)的(de)(de)信(xin)(xin)號”。它是傳(chuan)感系統(tong)的(de)(de)一個(ge)組(zu)成部分,它是被測量(liang)(liang)(liang)(liang)信(xin)(xin)號輸入的(de)(de)*道關口(kou)。它可分為兩(liang)類:有源的(de)(de)和(he)無源的(de)(de)。

2.工作原(yuan)理--結(jie)構　　
 結(jie)構：在(zai)(zai)一段特制的彈性軸上(shang)(shang)(shang)粘貼(tie)上(shang)(shang)(shang)的測扭(niu)應片并組成變(bian)橋,即為基礎扭(niu)矩傳感器;在(zai)(zai)軸上(shang)(shang)(shang)固(gu)定(ding)著:(1)能源(yuan)環形(xing)變(bian)壓(ya)器的次級線圈,(2)信(xin)號(hao)(hao)環形(xing)變(bian)壓(ya)器初級線圈,(3)軸上(shang)(shang)(shang)印(yin)刷電(dian)(dian)路(lu)板,電(dian)(dian)路(lu)板上(shang)(shang)(shang)包含整流(liu)穩(wen)定(ding)電(dian)(dian)源(yuan)、儀表放大電(dian)(dian)路(lu)、V/F變(bian)換電(dian)(dian)路(lu)及信(xin)號(hao)(hao)輸(shu)出(chu)電(dian)(dian)路(lu)。在(zai)(zai)電(dian)(dian)渦流(liu)傳感器的外殼上(shang)(shang)(shang)固(gu)定(ding)著:(1)激磁電(dian)(dian)路(lu),(2)能源(yuan)環形(xing)變(bian)壓(ya)器的初級線圈(輸(shu)入),(3) 信(xin)號(hao)(hao)環形(xing)變(bian)壓(ya)器次級線圈(輸(shu)出(chu)),(4)信(xin)號(hao)(hao)處理電(dian)(dian)路(lu)。

3.工(gong)作原理(li) 　　
 首先向其提供(gong)±15V電(dian)(dian)源(yuan)(yuan),激(ji)磁(ci)電(dian)(dian)路中的晶體(ti)振蕩器(qi)產生400Hz的方波(bo),經過(guo)功(gong)(gong)率放大(da)器(qi)即產生交流(liu)激(ji)磁(ci)功(gong)(gong)率電(dian)(dian)源(yuan)(yuan),通(tong)(tong)過(guo)能源(yuan)(yuan)環形(xing)變壓器(qi)從靜止的初(chu)級(ji)(ji)(ji)線圈(quan)(quan)(quan)(quan)傳(chuan)遞(di)(di)至旋轉(zhuan)的次級(ji)(ji)(ji)線圈(quan)(quan)(quan)(quan)。由(you)基準電(dian)(dian)源(yuan)(yuan)與雙運放組成的高精(jing)度穩壓電(dian)(dian)源(yuan)(yuan)產生±4.5V的精(jing)密直(zhi)流(liu)電(dian)(dian)源(yuan)(yuan)。當彈性(xing)軸受(shou)扭時,應(ying)變橋檢測得到的mV級(ji)(ji)(ji)的應(ying)變信號(hao)通(tong)(tong)過(guo)儀表放大(da)器(qi)放大(da)成1.5v±1v的強信號(hao),再通(tong)(tong)過(guo)V/F轉(zhuan)換器(qi)變換成頻率信號(hao),通(tong)(tong)過(guo)信號(hao)環形(xing)變壓器(qi)從旋轉(zhuan)的初(chu)級(ji)(ji)(ji)線圈(quan)(quan)(quan)(quan)傳(chuan)遞(di)(di)至靜止次級(ji)(ji)(ji)線圈(quan)(quan)(quan)(quan),再經過(guo)外殼上的信號(hao)處理(li)(li)電(dian)(dian)路濾波(bo)、整形(xing)即可得到與彈性(xing)軸承受(shou)的扭矩成正比(bi)的頻率信號(hao),既可提供(gong)給二次儀表或頻率計(ji)顯(xian)示也(ye)可直(zhi)接送計(ji)算機處理(li)(li)。 　　
 由于該旋轉變壓器(qi)動(dong)--靜環之(zhi)間只有(you)零點幾毫米的(de)間隙,加之(zhi)它(ta)軸上部分(fen)都密封在金屬外殼之(zhi)內,形(xing)成有(you)效(xiao)的(de)屏蔽,因此具(ju)有(you)很強的(de)抗(kang)干擾能力。