在方(fang)向(xiang)盤下邊的(de)(de)方(fang)向(xiang)桿上找(zhao)到助力(li)電機,電機上一(yi)(yi)般有(you)一(yi)(yi)個小鐵蓋護著的(de)(de)、帶(dai)四根線(帶(dai)有(you)一(yi)(yi)個插頭)的(de)(de)就是轉向(xiang)助力(li)扭矩傳感器,拆下小鐵蓋就能看到。
電(dian)動(dong)助(zhu)力(li)轉(zhuan)(zhuan)向系(xi)統主要(yao)由扭矩(ju)傳(chuan)感(gan)器(qi),車速(su)傳(chuan)感(gan)器(qi),電(dian)動(dong)機(ji)(ji),減速(su)機(ji)(ji)構與(yu)電(dian)子控(kong)制單元等組成。該系(xi)統通(tong)過扭矩(ju)傳(chuan)感(gan)器(qi)感(gan)知駕駛員(yuan)在(zai)轉(zhuan)(zhuan)向操作(zuo)時方向盤產生(sheng)的扭矩(ju)力(li)和轉(zhuan)(zhuan)向角度,就會把(ba)操控(kong)信息轉(zhuan)(zhuan)換成數字信號輸入(ru)到(dao)控(kong)制單元,再經過控(kong)制單元對這些信號進行運算(suan)得到(dao)一個最(zui)佳的力(li)矩(ju)最(zui)后控(kong)制驅使電(dian)動(dong)機(ji)(ji)工作(zuo)。以上(shang)就是整個電(dian)動(dong)助(zhu)力(li)系(xi)統構成和工作(zuo)的過程,不難看(kan)出扭矩(ju)傳(chuan)感(gan)器(qi)在(zai)電(dian)動(dong)助(zhu)力(li)系(xi)統中是最(zui)為重要(yao)的器(qi)件之一。
扭矩傳(chuan)(chuan)感器(qi)在(zai)電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)助(zhu)(zhu)(zhu)(zhu)力(li)轉(zhuan)(zhuan)向(xiang)(xiang)系(xi)統(tong)中(zhong)的(de)作用電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)助(zhu)(zhu)(zhu)(zhu)力(li)轉(zhuan)(zhuan)向(xiang)(xiang)系(xi)統(tong)可以稱之為EPS,它(ta)(ta)就是(shi)一種直接(jie)依靠電(dian)(dian)機(ji)提供輔助(zhu)(zhu)(zhu)(zhu)扭矩的(de)動(dong)(dong)(dong)(dong)(dong)力(li)轉(zhuan)(zhuan)向(xiang)(xiang)系(xi)統(tong)。在(zai)整個系(xi)統(tong)中(zhong),扭矩傳(chuan)(chuan)感器(qi)起(qi)(qi)到決定性作用。與傳(chuan)(chuan)統(tong)的(de)液(ye)壓(ya)助(zhu)(zhu)(zhu)(zhu)力(li)轉(zhuan)(zhuan)向(xiang)(xiang)系(xi)統(tong)不(bu)同的(de)是(shi)電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)助(zhu)(zhu)(zhu)(zhu)力(li)轉(zhuan)(zhuan)向(xiang)(xiang)系(xi)統(tong)具有性能(neng)應用上更(geng)大(da)(da)的(de)優勢(shi)。它(ta)(ta)不(bu)光在(zai)需要轉(zhuan)(zhuan)向(xiang)(xiang)時才啟動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)機(ji)產生助(zhu)(zhu)(zhu)(zhu)力(li),這(zhe)樣能(neng)大(da)(da)大(da)(da)的(de)減少發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)燃油消耗。電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)助(zhu)(zhu)(zhu)(zhu)力(li)能(neng)在(zai)各種行駛工(gong)況下(xia)提供最佳(jia)助(zhu)(zhu)(zhu)(zhu)力(li),減小(xiao)由路面(mian)不(bu)平所引起(qi)(qi)電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)機(ji)的(de)輸出轉(zhuan)(zhuan)矩通(tong)過傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)裝(zhuang)置的(de)作用而助(zhu)(zhu)(zhu)(zhu)力(li)向(xiang)(xiang)系(xi)的(de)擾動(dong)(dong)(dong)(dong)(dong),改善汽(qi)車(che)的(de)轉(zhuan)(zhuan)向(xiang)(xiang)特性,提高汽(qi)車(che)的(de)主動(dong)(dong)(dong)(dong)(dong)安全性。和液(ye)壓(ya)助(zhu)(zhu)(zhu)(zhu)力(li)相(xiang)比沒(mei)有液(ye)壓(ya)回路,調整和檢(jian)測更(geng)容易,裝(zhuang)配自動(dong)(dong)(dong)(dong)(dong)化程(cheng)度更(geng)高,且(qie)可通(tong)過設置不(bu)同的(de)程(cheng)序,快速以及不(bu)同車(che)型匹配,縮短生產和開發(fa)(fa)周(zhou)期(qi)。
扭矩(ju)(ju)傳(chuan)感(gan)器的(de)作用是測(ce)量動態扭矩(ju)(ju)和(he)靜態扭矩(ju)(ju),其檢測(ce)穩定(ding)性、抗干擾性,以及精度都很(hen)好,每次使用不需(xu)要調整為零。
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