在方(fang)向盤(pan)下邊的方(fang)向桿上找到助(zhu)力電機(ji),電機(ji)上一(yi)般有一(yi)個小鐵蓋(gai)護著的、帶四根線(帶有一(yi)個插頭(tou))的就是轉(zhuan)向助(zhu)力扭矩傳感器,拆下小鐵蓋(gai)就能(neng)看到。
電(dian)(dian)動助(zhu)力轉向系(xi)(xi)統主要(yao)由扭(niu)矩(ju)(ju)(ju)傳(chuan)(chuan)感(gan)器(qi),車速傳(chuan)(chuan)感(gan)器(qi),電(dian)(dian)動機(ji),減速機(ji)構與電(dian)(dian)子控(kong)(kong)制(zhi)單(dan)元(yuan)(yuan)等(deng)組(zu)成。該系(xi)(xi)統通過(guo)(guo)扭(niu)矩(ju)(ju)(ju)傳(chuan)(chuan)感(gan)器(qi)感(gan)知駕(jia)駛(shi)員(yuan)在轉向操(cao)作時方向盤產生的(de)扭(niu)矩(ju)(ju)(ju)力和(he)轉向角度,就會把(ba)操(cao)控(kong)(kong)信息轉換成數字(zi)信號(hao)輸入到控(kong)(kong)制(zhi)單(dan)元(yuan)(yuan),再經(jing)過(guo)(guo)控(kong)(kong)制(zhi)單(dan)元(yuan)(yuan)對這些信號(hao)進行運算得到一個最佳的(de)力矩(ju)(ju)(ju)最后(hou)控(kong)(kong)制(zhi)驅使電(dian)(dian)動機(ji)工(gong)作。以上就是整個電(dian)(dian)動助(zhu)力系(xi)(xi)統構成和(he)工(gong)作的(de)過(guo)(guo)程(cheng),不難看(kan)出扭(niu)矩(ju)(ju)(ju)傳(chuan)(chuan)感(gan)器(qi)在電(dian)(dian)動助(zhu)力系(xi)(xi)統中是最為重(zhong)要(yao)的(de)器(qi)件之一。
扭矩(ju)(ju)傳(chuan)(chuan)感器在(zai)電(dian)動(dong)助(zhu)(zhu)(zhu)力(li)(li)(li)(li)轉(zhuan)(zhuan)向系(xi)統(tong)中的(de)作(zuo)用(yong)電(dian)動(dong)助(zhu)(zhu)(zhu)力(li)(li)(li)(li)轉(zhuan)(zhuan)向系(xi)統(tong)可(ke)以(yi)稱之(zhi)為(wei)EPS,它就是一種(zhong)直接依靠電(dian)機提(ti)供輔助(zhu)(zhu)(zhu)扭矩(ju)(ju)的(de)動(dong)力(li)(li)(li)(li)轉(zhuan)(zhuan)向系(xi)統(tong)。在(zai)整個系(xi)統(tong)中,扭矩(ju)(ju)傳(chuan)(chuan)感器起(qi)到決定(ding)性(xing)(xing)作(zuo)用(yong)。與傳(chuan)(chuan)統(tong)的(de)液(ye)壓助(zhu)(zhu)(zhu)力(li)(li)(li)(li)轉(zhuan)(zhuan)向系(xi)統(tong)不(bu)(bu)同的(de)是電(dian)動(dong)助(zhu)(zhu)(zhu)力(li)(li)(li)(li)轉(zhuan)(zhuan)向系(xi)統(tong)具有性(xing)(xing)能應(ying)用(yong)上更(geng)大(da)(da)的(de)優勢。它不(bu)(bu)光(guang)在(zai)需要(yao)轉(zhuan)(zhuan)向時才啟動(dong)電(dian)機產生(sheng)助(zhu)(zhu)(zhu)力(li)(li)(li)(li),這樣能大(da)(da)大(da)(da)的(de)減少發動(dong)機燃油消耗(hao)。電(dian)動(dong)助(zhu)(zhu)(zhu)力(li)(li)(li)(li)能在(zai)各種(zhong)行駛工況下(xia)提(ti)供最佳助(zhu)(zhu)(zhu)力(li)(li)(li)(li),減小由路(lu)面(mian)不(bu)(bu)平(ping)所引起(qi)電(dian)動(dong)機的(de)輸出轉(zhuan)(zhuan)矩(ju)(ju)通過(guo)傳(chuan)(chuan)動(dong)裝(zhuang)置的(de)作(zuo)用(yong)而助(zhu)(zhu)(zhu)力(li)(li)(li)(li)向系(xi)的(de)擾動(dong),改善(shan)汽車的(de)轉(zhuan)(zhuan)向特(te)性(xing)(xing),提(ti)高(gao)汽車的(de)主動(dong)安全性(xing)(xing)。和(he)液(ye)壓助(zhu)(zhu)(zhu)力(li)(li)(li)(li)相比沒有液(ye)壓回路(lu),調(diao)整和(he)檢測更(geng)容易(yi),裝(zhuang)配自(zi)動(dong)化(hua)程(cheng)度(du)更(geng)高(gao),且可(ke)通過(guo)設(she)置不(bu)(bu)同的(de)程(cheng)序,快速以(yi)及不(bu)(bu)同車型匹(pi)配,縮短生(sheng)產和(he)開發周期(qi)。
扭矩(ju)(ju)(ju)傳感器的作用(yong)是(shi)測(ce)(ce)量動態(tai)扭矩(ju)(ju)(ju)和靜態(tai)扭矩(ju)(ju)(ju),其檢測(ce)(ce)穩定(ding)性、抗干擾性,以及精度(du)都(dou)很好,每次使(shi)用(yong)不需(xu)要調整(zheng)為零。
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