在方(fang)向盤下邊的方(fang)向桿上(shang)找到助(zhu)力(li)電機,電機上(shang)一般有(you)一個小(xiao)鐵蓋(gai)(gai)護著的、帶(dai)四根線(帶(dai)有(you)一個插頭(tou))的就是轉向助(zhu)力(li)扭矩(ju)傳感器,拆(chai)下小(xiao)鐵蓋(gai)(gai)就能(neng)看(kan)到。
電(dian)動(dong)助力(li)轉向(xiang)系(xi)統主要由扭矩傳感(gan)器(qi),車速傳感(gan)器(qi),電(dian)動(dong)機(ji)(ji),減速機(ji)(ji)構與電(dian)子控制(zhi)單元等組(zu)成。該系(xi)統通過(guo)扭矩傳感(gan)器(qi)感(gan)知駕駛員在轉向(xiang)操(cao)作(zuo)時方(fang)向(xiang)盤產生的(de)扭矩力(li)和轉向(xiang)角(jiao)度,就(jiu)會把(ba)操(cao)控信息(xi)轉換成數字信號輸(shu)入到控制(zhi)單元,再(zai)經過(guo)控制(zhi)單元對(dui)這些(xie)信號進行運算得到一(yi)(yi)個最佳的(de)力(li)矩最后控制(zhi)驅(qu)使電(dian)動(dong)機(ji)(ji)工(gong)作(zuo)。以上(shang)就(jiu)是(shi)整(zheng)個電(dian)動(dong)助力(li)系(xi)統構成和工(gong)作(zuo)的(de)過(guo)程,不難看(kan)出扭矩傳感(gan)器(qi)在電(dian)動(dong)助力(li)系(xi)統中(zhong)是(shi)最為重要的(de)器(qi)件之(zhi)一(yi)(yi)。
扭(niu)(niu)矩(ju)傳(chuan)感器在(zai)(zai)(zai)電(dian)(dian)(dian)動(dong)(dong)助(zhu)(zhu)(zhu)力(li)(li)轉(zhuan)(zhuan)向系統(tong)(tong)中(zhong)的(de)(de)(de)作用電(dian)(dian)(dian)動(dong)(dong)助(zhu)(zhu)(zhu)力(li)(li)轉(zhuan)(zhuan)向系統(tong)(tong)可以(yi)稱之為EPS,它就是一種直接依(yi)靠(kao)電(dian)(dian)(dian)機提供輔(fu)助(zhu)(zhu)(zhu)扭(niu)(niu)矩(ju)的(de)(de)(de)動(dong)(dong)力(li)(li)轉(zhuan)(zhuan)向系統(tong)(tong)。在(zai)(zai)(zai)整個系統(tong)(tong)中(zhong),扭(niu)(niu)矩(ju)傳(chuan)感器起到決定性作用。與(yu)傳(chuan)統(tong)(tong)的(de)(de)(de)液(ye)(ye)壓(ya)(ya)助(zhu)(zhu)(zhu)力(li)(li)轉(zhuan)(zhuan)向系統(tong)(tong)不同(tong)的(de)(de)(de)是電(dian)(dian)(dian)動(dong)(dong)助(zhu)(zhu)(zhu)力(li)(li)轉(zhuan)(zhuan)向系統(tong)(tong)具有(you)(you)性能(neng)應(ying)用上更(geng)(geng)大(da)的(de)(de)(de)優勢。它不光在(zai)(zai)(zai)需要(yao)轉(zhuan)(zhuan)向時才啟動(dong)(dong)電(dian)(dian)(dian)機產生助(zhu)(zhu)(zhu)力(li)(li),這樣能(neng)大(da)大(da)的(de)(de)(de)減(jian)少(shao)發(fa)動(dong)(dong)機燃油消(xiao)耗。電(dian)(dian)(dian)動(dong)(dong)助(zhu)(zhu)(zhu)力(li)(li)能(neng)在(zai)(zai)(zai)各種行(xing)駛工況下(xia)提供最佳助(zhu)(zhu)(zhu)力(li)(li),減(jian)小由路(lu)面不平(ping)所引(yin)起電(dian)(dian)(dian)動(dong)(dong)機的(de)(de)(de)輸出轉(zhuan)(zhuan)矩(ju)通(tong)過(guo)傳(chuan)動(dong)(dong)裝置的(de)(de)(de)作用而(er)助(zhu)(zhu)(zhu)力(li)(li)向系的(de)(de)(de)擾動(dong)(dong),改善汽(qi)車的(de)(de)(de)轉(zhuan)(zhuan)向特性,提高(gao)汽(qi)車的(de)(de)(de)主動(dong)(dong)安全性。和(he)液(ye)(ye)壓(ya)(ya)助(zhu)(zhu)(zhu)力(li)(li)相(xiang)比(bi)沒有(you)(you)液(ye)(ye)壓(ya)(ya)回(hui)路(lu),調整和(he)檢測(ce)更(geng)(geng)容(rong)易(yi),裝配(pei)自動(dong)(dong)化程(cheng)度更(geng)(geng)高(gao),且可通(tong)過(guo)設置不同(tong)的(de)(de)(de)程(cheng)序,快(kuai)速以(yi)及不同(tong)車型匹配(pei),縮短生產和(he)開(kai)發(fa)周期。
扭(niu)矩(ju)傳感(gan)器的作(zuo)用(yong)是測(ce)量動態扭(niu)矩(ju)和靜(jing)態扭(niu)矩(ju),其檢測(ce)穩(wen)定(ding)性(xing)、抗(kang)干擾(rao)性(xing),以(yi)及精度(du)都很好,每(mei)次使用(yong)不(bu)需要調整為(wei)零。
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