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扭矩傳感器簡介

在方(fang)向(xiang)盤下邊(bian)的(de)方(fang)向(xiang)桿上找(zhao)到助力電機，電機上一般有(you)一個小鐵蓋護著的(de)、帶(dai)(dai)四根(gen)線（帶(dai)(dai)有(you)一個插頭）的(de)就(jiu)(jiu)是轉向(xiang)助力扭矩傳感器，拆(chai)下小鐵蓋就(jiu)(jiu)能(neng)看到。

電(dian)(dian)動助力轉向系(xi)統主(zhu)要(yao)由扭(niu)矩傳(chuan)感(gan)器(qi)，車速傳(chuan)感(gan)器(qi)，電(dian)(dian)動機(ji)，減速機(ji)構與電(dian)(dian)子控(kong)制單元等(deng)組成。該系(xi)統通過(guo)扭(niu)矩傳(chuan)感(gan)器(qi)感(gan)知駕駛員在轉向操作時方向盤產生的(de)扭(niu)矩力和轉向角度，就(jiu)會(hui)把操控(kong)信(xin)息轉換成數字信(xin)號(hao)輸入到控(kong)制單元，再(zai)經過(guo)控(kong)制單元對這些信(xin)號(hao)進行運(yun)算得到一個最(zui)佳的(de)力矩最(zui)后(hou)控(kong)制驅使(shi)電(dian)(dian)動機(ji)工(gong)作。以上(shang)就(jiu)是(shi)整個電(dian)(dian)動助力系(xi)統構成和工(gong)作的(de)過(guo)程，不難看出(chu)扭(niu)矩傳(chuan)感(gan)器(qi)在電(dian)(dian)動助力系(xi)統中是(shi)最(zui)為重要(yao)的(de)器(qi)件之一。

扭矩傳感器的作用

扭矩傳感器(qi)在(zai)(zai)(zai)(zai)電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)助(zhu)(zhu)(zhu)力(li)轉向(xiang)(xiang)系(xi)統(tong)(tong)中(zhong)(zhong)的(de)(de)(de)(de)(de)作用(yong)(yong)電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)助(zhu)(zhu)(zhu)力(li)轉向(xiang)(xiang)系(xi)統(tong)(tong)可(ke)(ke)以(yi)(yi)稱之為EPS，它就是(shi)一種直(zhi)接依靠電(dian)(dian)機(ji)(ji)提供輔(fu)助(zhu)(zhu)(zhu)扭矩的(de)(de)(de)(de)(de)動(dong)(dong)(dong)(dong)(dong)力(li)轉向(xiang)(xiang)系(xi)統(tong)(tong)。在(zai)(zai)(zai)(zai)整(zheng)個系(xi)統(tong)(tong)中(zhong)(zhong)，扭矩傳感器(qi)起到決(jue)定性作用(yong)(yong)。與(yu)傳統(tong)(tong)的(de)(de)(de)(de)(de)液(ye)壓(ya)(ya)助(zhu)(zhu)(zhu)力(li)轉向(xiang)(xiang)系(xi)統(tong)(tong)不同(tong)的(de)(de)(de)(de)(de)是(shi)電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)助(zhu)(zhu)(zhu)力(li)轉向(xiang)(xiang)系(xi)統(tong)(tong)具有性能(neng)(neng)應用(yong)(yong)上更(geng)大(da)的(de)(de)(de)(de)(de)優(you)勢。它不光在(zai)(zai)(zai)(zai)需要轉向(xiang)(xiang)時才啟動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)機(ji)(ji)產生助(zhu)(zhu)(zhu)力(li)，這樣能(neng)(neng)大(da)大(da)的(de)(de)(de)(de)(de)減少發(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)燃(ran)油消耗(hao)。電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)助(zhu)(zhu)(zhu)力(li)能(neng)(neng)在(zai)(zai)(zai)(zai)各種行駛工況下提供最佳助(zhu)(zhu)(zhu)力(li)，減小由路(lu)面不平(ping)所引起電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)的(de)(de)(de)(de)(de)輸出轉矩通過傳動(dong)(dong)(dong)(dong)(dong)裝置的(de)(de)(de)(de)(de)作用(yong)(yong)而助(zhu)(zhu)(zhu)力(li)向(xiang)(xiang)系(xi)的(de)(de)(de)(de)(de)擾(rao)動(dong)(dong)(dong)(dong)(dong)，改善汽(qi)車的(de)(de)(de)(de)(de)轉向(xiang)(xiang)特性，提高(gao)汽(qi)車的(de)(de)(de)(de)(de)主動(dong)(dong)(dong)(dong)(dong)安全性。和(he)液(ye)壓(ya)(ya)助(zhu)(zhu)(zhu)力(li)相比(bi)沒有液(ye)壓(ya)(ya)回路(lu)，調(diao)整(zheng)和(he)檢測更(geng)容易，裝配(pei)自(zi)動(dong)(dong)(dong)(dong)(dong)化(hua)程(cheng)度更(geng)高(gao)，且可(ke)(ke)通過設置不同(tong)的(de)(de)(de)(de)(de)程(cheng)序，快速以(yi)(yi)及(ji)不同(tong)車型匹配(pei)，縮短(duan)生產和(he)開發(fa)周(zhou)期。

扭矩傳感器(qi)的(de)作用是測量動態(tai)扭矩和靜態(tai)扭矩，其(qi)檢測穩定性、抗干擾性，以及精度都很好，每次使(shi)用不需要(yao)調整(zheng)為零。

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