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扭矩傳感器簡介

在方(fang)向(xiang)盤下(xia)邊的(de)方(fang)向(xiang)桿上找到助力電機，電機上一般有(you)(you)一個小鐵(tie)蓋護著(zhu)的(de)、帶四根線(xian)（帶有(you)(you)一個插頭）的(de)就(jiu)是(shi)轉向(xiang)助力扭矩傳(chuan)感(gan)器，拆(chai)下(xia)小鐵(tie)蓋就(jiu)能(neng)看到。

電(dian)動助(zhu)(zhu)力轉(zhuan)向(xiang)系統主(zhu)要由扭(niu)矩(ju)(ju)傳(chuan)(chuan)(chuan)感(gan)器(qi)，車速傳(chuan)(chuan)(chuan)感(gan)器(qi)，電(dian)動機(ji)，減速機(ji)構與電(dian)子控(kong)制(zhi)單(dan)(dan)(dan)元等(deng)組成(cheng)。該系統通過扭(niu)矩(ju)(ju)傳(chuan)(chuan)(chuan)感(gan)器(qi)感(gan)知駕駛員在轉(zhuan)向(xiang)操(cao)作時(shi)方(fang)向(xiang)盤產生的扭(niu)矩(ju)(ju)力和(he)(he)轉(zhuan)向(xiang)角度，就會把操(cao)控(kong)信(xin)息轉(zhuan)換成(cheng)數字信(xin)號(hao)輸入(ru)到(dao)控(kong)制(zhi)單(dan)(dan)(dan)元，再經過控(kong)制(zhi)單(dan)(dan)(dan)元對這些信(xin)號(hao)進行(xing)運算得(de)到(dao)一(yi)個(ge)最佳(jia)的力矩(ju)(ju)最后控(kong)制(zhi)驅使電(dian)動機(ji)工(gong)作。以(yi)上就是(shi)(shi)整個(ge)電(dian)動助(zhu)(zhu)力系統構成(cheng)和(he)(he)工(gong)作的過程，不難看出扭(niu)矩(ju)(ju)傳(chuan)(chuan)(chuan)感(gan)器(qi)在電(dian)動助(zhu)(zhu)力系統中是(shi)(shi)最為重(zhong)要的器(qi)件(jian)之一(yi)。

扭矩傳感器的作用

扭矩(ju)(ju)傳(chuan)感器在(zai)電(dian)(dian)(dian)動(dong)(dong)(dong)助力(li)(li)(li)轉向(xiang)(xiang)系(xi)(xi)(xi)(xi)統(tong)中(zhong)的(de)(de)作用電(dian)(dian)(dian)動(dong)(dong)(dong)助力(li)(li)(li)轉向(xiang)(xiang)系(xi)(xi)(xi)(xi)統(tong)可以稱之為EPS，它就是一種直接依靠(kao)電(dian)(dian)(dian)機(ji)提(ti)(ti)供(gong)(gong)輔助扭矩(ju)(ju)的(de)(de)動(dong)(dong)(dong)力(li)(li)(li)轉向(xiang)(xiang)系(xi)(xi)(xi)(xi)統(tong)。在(zai)整(zheng)個系(xi)(xi)(xi)(xi)統(tong)中(zhong)，扭矩(ju)(ju)傳(chuan)感器起到決(jue)定性作用。與(yu)傳(chuan)統(tong)的(de)(de)液(ye)壓助力(li)(li)(li)轉向(xiang)(xiang)系(xi)(xi)(xi)(xi)統(tong)不(bu)(bu)同的(de)(de)是電(dian)(dian)(dian)動(dong)(dong)(dong)助力(li)(li)(li)轉向(xiang)(xiang)系(xi)(xi)(xi)(xi)統(tong)具(ju)有性能應用上更大(da)的(de)(de)優勢。它不(bu)(bu)光在(zai)需(xu)要轉向(xiang)(xiang)時(shi)才啟(qi)動(dong)(dong)(dong)電(dian)(dian)(dian)機(ji)產(chan)生助力(li)(li)(li)，這樣能大(da)大(da)的(de)(de)減(jian)(jian)少發(fa)動(dong)(dong)(dong)機(ji)燃油消(xiao)耗。電(dian)(dian)(dian)動(dong)(dong)(dong)助力(li)(li)(li)能在(zai)各種行駛工況下提(ti)(ti)供(gong)(gong)最佳助力(li)(li)(li)，減(jian)(jian)小由(you)路面(mian)不(bu)(bu)平所引(yin)起電(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)的(de)(de)輸出(chu)轉矩(ju)(ju)通過傳(chuan)動(dong)(dong)(dong)裝(zhuang)置的(de)(de)作用而助力(li)(li)(li)向(xiang)(xiang)系(xi)(xi)(xi)(xi)的(de)(de)擾動(dong)(dong)(dong)，改善汽車(che)的(de)(de)轉向(xiang)(xiang)特性，提(ti)(ti)高(gao)汽車(che)的(de)(de)主(zhu)動(dong)(dong)(dong)安全性。和液(ye)壓助力(li)(li)(li)相比沒(mei)有液(ye)壓回路，調整(zheng)和檢測更容易(yi)，裝(zhuang)配自動(dong)(dong)(dong)化程度更高(gao)，且可通過設(she)置不(bu)(bu)同的(de)(de)程序，快速以及不(bu)(bu)同車(che)型匹配，縮短(duan)生產(chan)和開發(fa)周期。

扭(niu)矩傳感器的作(zuo)用(yong)是(shi)測(ce)量動(dong)態(tai)扭(niu)矩和靜態(tai)扭(niu)矩，其檢(jian)測(ce)穩定(ding)性、抗干擾(rao)性，以及(ji)精度都(dou)很(hen)好，每(mei)次使用(yong)不需(xu)要調(diao)整為零(ling)。

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