在方(fang)向(xiang)(xiang)(xiang)盤(pan)下邊的方(fang)向(xiang)(xiang)(xiang)桿上(shang)(shang)找到助力電(dian)機,電(dian)機上(shang)(shang)一般有一個小鐵蓋護著的、帶四根線(帶有一個插(cha)頭(tou))的就是轉(zhuan)向(xiang)(xiang)(xiang)助力扭(niu)矩傳(chuan)感器,拆下小鐵蓋就能看到。
電(dian)(dian)動(dong)助力轉(zhuan)向(xiang)(xiang)系(xi)(xi)統(tong)主要由扭(niu)矩(ju)(ju)(ju)(ju)傳(chuan)感器(qi),車(che)速傳(chuan)感器(qi),電(dian)(dian)動(dong)機,減速機構與電(dian)(dian)子(zi)控(kong)制(zhi)單元等組成。該(gai)系(xi)(xi)統(tong)通(tong)過(guo)扭(niu)矩(ju)(ju)(ju)(ju)傳(chuan)感器(qi)感知(zhi)駕駛員在(zai)轉(zhuan)向(xiang)(xiang)操作時方向(xiang)(xiang)盤產(chan)生的扭(niu)矩(ju)(ju)(ju)(ju)力和轉(zhuan)向(xiang)(xiang)角度,就會(hui)把操控(kong)信息轉(zhuan)換成數字信號(hao)輸(shu)入到(dao)控(kong)制(zhi)單元,再經過(guo)控(kong)制(zhi)單元對(dui)這些信號(hao)進行運算得(de)到(dao)一(yi)個最(zui)(zui)佳的力矩(ju)(ju)(ju)(ju)最(zui)(zui)后控(kong)制(zhi)驅(qu)使電(dian)(dian)動(dong)機工作。以上(shang)就是(shi)(shi)整個電(dian)(dian)動(dong)助力系(xi)(xi)統(tong)構成和工作的過(guo)程,不難看(kan)出扭(niu)矩(ju)(ju)(ju)(ju)傳(chuan)感器(qi)在(zai)電(dian)(dian)動(dong)助力系(xi)(xi)統(tong)中是(shi)(shi)最(zui)(zui)為重要的器(qi)件(jian)之一(yi)。
扭(niu)矩(ju)(ju)傳(chuan)(chuan)感器(qi)在電動(dong)(dong)助(zhu)(zhu)力(li)轉(zhuan)(zhuan)向(xiang)系統(tong)(tong)中的(de)(de)(de)(de)(de)(de)(de)作用(yong)(yong)電動(dong)(dong)助(zhu)(zhu)力(li)轉(zhuan)(zhuan)向(xiang)系統(tong)(tong)可(ke)以稱之為EPS,它(ta)就(jiu)是一種直接依靠(kao)電機(ji)(ji)(ji)提供輔(fu)助(zhu)(zhu)扭(niu)矩(ju)(ju)的(de)(de)(de)(de)(de)(de)(de)動(dong)(dong)力(li)轉(zhuan)(zhuan)向(xiang)系統(tong)(tong)。在整個系統(tong)(tong)中,扭(niu)矩(ju)(ju)傳(chuan)(chuan)感器(qi)起到決定性(xing)作用(yong)(yong)。與傳(chuan)(chuan)統(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)液(ye)壓(ya)助(zhu)(zhu)力(li)轉(zhuan)(zhuan)向(xiang)系統(tong)(tong)不(bu)(bu)同的(de)(de)(de)(de)(de)(de)(de)是電動(dong)(dong)助(zhu)(zhu)力(li)轉(zhuan)(zhuan)向(xiang)系統(tong)(tong)具有性(xing)能(neng)(neng)應用(yong)(yong)上(shang)更大的(de)(de)(de)(de)(de)(de)(de)優勢。它(ta)不(bu)(bu)光在需要轉(zhuan)(zhuan)向(xiang)時才啟動(dong)(dong)電機(ji)(ji)(ji)產生助(zhu)(zhu)力(li),這(zhe)樣能(neng)(neng)大大的(de)(de)(de)(de)(de)(de)(de)減少發(fa)動(dong)(dong)機(ji)(ji)(ji)燃(ran)油消(xiao)耗。電動(dong)(dong)助(zhu)(zhu)力(li)能(neng)(neng)在各種行駛工況(kuang)下提供最佳助(zhu)(zhu)力(li),減小由路面不(bu)(bu)平所引起電動(dong)(dong)機(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)輸出轉(zhuan)(zhuan)矩(ju)(ju)通(tong)過傳(chuan)(chuan)動(dong)(dong)裝置(zhi)的(de)(de)(de)(de)(de)(de)(de)作用(yong)(yong)而助(zhu)(zhu)力(li)向(xiang)系的(de)(de)(de)(de)(de)(de)(de)擾動(dong)(dong),改善汽車(che)的(de)(de)(de)(de)(de)(de)(de)轉(zhuan)(zhuan)向(xiang)特性(xing),提高汽車(che)的(de)(de)(de)(de)(de)(de)(de)主動(dong)(dong)安全(quan)性(xing)。和液(ye)壓(ya)助(zhu)(zhu)力(li)相(xiang)比沒(mei)有液(ye)壓(ya)回路,調整和檢(jian)測(ce)更容易,裝配(pei)自動(dong)(dong)化程度更高,且(qie)可(ke)通(tong)過設置(zhi)不(bu)(bu)同的(de)(de)(de)(de)(de)(de)(de)程序,快速(su)以及不(bu)(bu)同車(che)型匹配(pei),縮短(duan)生產和開發(fa)周期。
扭矩傳感器的作用(yong)是(shi)測量(liang)動(dong)態扭矩和靜態扭矩,其檢測穩定性、抗(kang)干擾性,以及精度都很好,每次使用(yong)不需要調整(zheng)為零。
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