在方(fang)向盤下(xia)邊的方(fang)向桿上(shang)找到助力電機,電機上(shang)一般有一個(ge)小(xiao)鐵(tie)蓋護著的、帶(dai)四(si)根線(帶(dai)有一個(ge)插頭)的就是轉向助力扭矩傳感器(qi),拆下(xia)小(xiao)鐵(tie)蓋就能看(kan)到。
電(dian)(dian)動助(zhu)力(li)(li)轉(zhuan)向系(xi)(xi)統主要由扭(niu)矩(ju)傳感器(qi),車(che)速傳感器(qi),電(dian)(dian)動機,減速機構與電(dian)(dian)子控(kong)(kong)制單(dan)元(yuan)等組(zu)成。該系(xi)(xi)統通過扭(niu)矩(ju)傳感器(qi)感知駕駛員(yuan)在轉(zhuan)向操(cao)作時(shi)方(fang)向盤產生的(de)扭(niu)矩(ju)力(li)(li)和(he)轉(zhuan)向角度,就會把操(cao)控(kong)(kong)信息轉(zhuan)換成數字信號(hao)(hao)輸入到(dao)控(kong)(kong)制單(dan)元(yuan),再經過控(kong)(kong)制單(dan)元(yuan)對(dui)這些信號(hao)(hao)進行運算(suan)得(de)到(dao)一(yi)(yi)個最(zui)(zui)佳(jia)的(de)力(li)(li)矩(ju)最(zui)(zui)后控(kong)(kong)制驅使電(dian)(dian)動機工(gong)作。以上就是整個電(dian)(dian)動助(zhu)力(li)(li)系(xi)(xi)統構成和(he)工(gong)作的(de)過程,不難(nan)看出扭(niu)矩(ju)傳感器(qi)在電(dian)(dian)動助(zhu)力(li)(li)系(xi)(xi)統中是最(zui)(zui)為重要的(de)器(qi)件(jian)之一(yi)(yi)。
扭(niu)矩傳(chuan)感器在(zai)電(dian)(dian)(dian)動(dong)(dong)(dong)助(zhu)力(li)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)系(xi)(xi)統(tong)中的(de)(de)作(zuo)(zuo)用(yong)電(dian)(dian)(dian)動(dong)(dong)(dong)助(zhu)力(li)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)系(xi)(xi)統(tong)可以(yi)稱之(zhi)為EPS,它就是一種直接(jie)依靠電(dian)(dian)(dian)機(ji)提供(gong)輔助(zhu)扭(niu)矩的(de)(de)動(dong)(dong)(dong)力(li)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)系(xi)(xi)統(tong)。在(zai)整個系(xi)(xi)統(tong)中,扭(niu)矩傳(chuan)感器起到(dao)決(jue)定性作(zuo)(zuo)用(yong)。與傳(chuan)統(tong)的(de)(de)液(ye)壓(ya)助(zhu)力(li)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)系(xi)(xi)統(tong)不(bu)(bu)(bu)同的(de)(de)是電(dian)(dian)(dian)動(dong)(dong)(dong)助(zhu)力(li)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)系(xi)(xi)統(tong)具有性能應用(yong)上更(geng)(geng)大的(de)(de)優勢。它不(bu)(bu)(bu)光在(zai)需要轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)時(shi)才啟動(dong)(dong)(dong)電(dian)(dian)(dian)機(ji)產生助(zhu)力(li),這樣能大大的(de)(de)減少發動(dong)(dong)(dong)機(ji)燃油消(xiao)耗。電(dian)(dian)(dian)動(dong)(dong)(dong)助(zhu)力(li)能在(zai)各種行駛工況(kuang)下(xia)提供(gong)最佳(jia)助(zhu)力(li),減小由路面不(bu)(bu)(bu)平所引起電(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)的(de)(de)輸出轉(zhuan)(zhuan)(zhuan)矩通過傳(chuan)動(dong)(dong)(dong)裝置的(de)(de)作(zuo)(zuo)用(yong)而助(zhu)力(li)向(xiang)(xiang)(xiang)系(xi)(xi)的(de)(de)擾(rao)動(dong)(dong)(dong),改(gai)善汽車的(de)(de)轉(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)特性,提高(gao)汽車的(de)(de)主動(dong)(dong)(dong)安全性。和液(ye)壓(ya)助(zhu)力(li)相比沒有液(ye)壓(ya)回路,調(diao)整和檢(jian)測更(geng)(geng)容易,裝配自動(dong)(dong)(dong)化程度(du)更(geng)(geng)高(gao),且可通過設置不(bu)(bu)(bu)同的(de)(de)程序,快速以(yi)及不(bu)(bu)(bu)同車型匹(pi)配,縮短生產和開發周期。
扭矩傳感器的作用(yong)是(shi)測(ce)量動態扭矩和靜(jing)態扭矩,其檢(jian)測(ce)穩定性、抗(kang)干擾性,以及精度都(dou)很好,每次(ci)使用(yong)不需要調整為零(ling)。
2018年(nian)3月,捷豹(bao)汽車(che)公(gong)布了(le)其首款純電動SUV的量產版本I-Pace。該(gai)車(che)將在2018年(nian)日內瓦(wa)車(che)展上亮相(xiang)。
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