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扭矩傳感器簡介

在方(fang)向(xiang)盤下(xia)邊的方(fang)向(xiang)桿上找到(dao)(dao)助(zhu)力(li)電機，電機上一般有(you)一個(ge)(ge)小鐵蓋護著的、帶四根線（帶有(you)一個(ge)(ge)插頭(tou)）的就(jiu)是(shi)轉(zhuan)向(xiang)助(zhu)力(li)扭矩傳感器，拆下(xia)小鐵蓋就(jiu)能看到(dao)(dao)。

電(dian)(dian)(dian)動(dong)助(zhu)力(li)轉向系統主要由扭矩傳(chuan)感(gan)器(qi)，車速傳(chuan)感(gan)器(qi)，電(dian)(dian)(dian)動(dong)機，減速機構與電(dian)(dian)(dian)子(zi)控(kong)制(zhi)(zhi)單元等組成。該系統通過扭矩傳(chuan)感(gan)器(qi)感(gan)知(zhi)駕(jia)駛員在轉向操作時方向盤產生的扭矩力(li)和轉向角度(du)，就會把(ba)操控(kong)信息轉換成數字信號輸入到(dao)控(kong)制(zhi)(zhi)單元，再經(jing)過控(kong)制(zhi)(zhi)單元對這些信號進行運算(suan)得到(dao)一(yi)個(ge)最(zui)(zui)佳的力(li)矩最(zui)(zui)后控(kong)制(zhi)(zhi)驅使電(dian)(dian)(dian)動(dong)機工作。以上(shang)就是(shi)整個(ge)電(dian)(dian)(dian)動(dong)助(zhu)力(li)系統構成和工作的過程，不難看出扭矩傳(chuan)感(gan)器(qi)在電(dian)(dian)(dian)動(dong)助(zhu)力(li)系統中是(shi)最(zui)(zui)為重要的器(qi)件之一(yi)。

扭矩傳感器的作用

扭(niu)矩(ju)傳(chuan)感器在(zai)電動(dong)(dong)助(zhu)(zhu)(zhu)(zhu)力(li)轉向(xiang)(xiang)(xiang)系(xi)(xi)統(tong)(tong)(tong)(tong)中(zhong)的(de)(de)(de)作用(yong)電動(dong)(dong)助(zhu)(zhu)(zhu)(zhu)力(li)轉向(xiang)(xiang)(xiang)系(xi)(xi)統(tong)(tong)(tong)(tong)可以稱之(zhi)為(wei)EPS，它就是一種直接(jie)依靠(kao)電機(ji)提供(gong)輔助(zhu)(zhu)(zhu)(zhu)扭(niu)矩(ju)的(de)(de)(de)動(dong)(dong)力(li)轉向(xiang)(xiang)(xiang)系(xi)(xi)統(tong)(tong)(tong)(tong)。在(zai)整個系(xi)(xi)統(tong)(tong)(tong)(tong)中(zhong)，扭(niu)矩(ju)傳(chuan)感器起到決定性(xing)作用(yong)。與傳(chuan)統(tong)(tong)(tong)(tong)的(de)(de)(de)液(ye)壓(ya)助(zhu)(zhu)(zhu)(zhu)力(li)轉向(xiang)(xiang)(xiang)系(xi)(xi)統(tong)(tong)(tong)(tong)不(bu)同的(de)(de)(de)是電動(dong)(dong)助(zhu)(zhu)(zhu)(zhu)力(li)轉向(xiang)(xiang)(xiang)系(xi)(xi)統(tong)(tong)(tong)(tong)具(ju)有性(xing)能應用(yong)上更(geng)(geng)大的(de)(de)(de)優勢。它不(bu)光在(zai)需要轉向(xiang)(xiang)(xiang)時(shi)才啟動(dong)(dong)電機(ji)產(chan)生(sheng)助(zhu)(zhu)(zhu)(zhu)力(li)，這樣能大大的(de)(de)(de)減(jian)少發動(dong)(dong)機(ji)燃油(you)消耗。電動(dong)(dong)助(zhu)(zhu)(zhu)(zhu)力(li)能在(zai)各種行駛(shi)工(gong)況下(xia)提供(gong)最佳助(zhu)(zhu)(zhu)(zhu)力(li)，減(jian)小由路面不(bu)平所引起電動(dong)(dong)機(ji)的(de)(de)(de)輸出轉矩(ju)通(tong)過傳(chuan)動(dong)(dong)裝置(zhi)的(de)(de)(de)作用(yong)而(er)助(zhu)(zhu)(zhu)(zhu)力(li)向(xiang)(xiang)(xiang)系(xi)(xi)的(de)(de)(de)擾動(dong)(dong)，改善(shan)汽車(che)的(de)(de)(de)轉向(xiang)(xiang)(xiang)特性(xing)，提高汽車(che)的(de)(de)(de)主動(dong)(dong)安全性(xing)。和液(ye)壓(ya)助(zhu)(zhu)(zhu)(zhu)力(li)相比沒有液(ye)壓(ya)回路，調整和檢測更(geng)(geng)容易，裝配(pei)自動(dong)(dong)化程度更(geng)(geng)高，且可通(tong)過設置(zhi)不(bu)同的(de)(de)(de)程序，快速(su)以及不(bu)同車(che)型匹(pi)配(pei)，縮短生(sheng)產(chan)和開發周期。

扭矩(ju)傳感器(qi)的作用(yong)是測(ce)(ce)量(liang)動(dong)態扭矩(ju)和(he)靜態扭矩(ju)，其檢(jian)測(ce)(ce)穩定性、抗干擾性，以(yi)及精度都很好，每次使用(yong)不(bu)需要(yao)調(diao)整為零。

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