在方向盤下邊的方向桿上找到(dao)助力(li)電機,電機上一般(ban)有一個小鐵(tie)(tie)蓋護著的、帶四根線(帶有一個插頭)的就是(shi)轉(zhuan)向助力(li)扭矩傳(chuan)感(gan)器(qi),拆下小鐵(tie)(tie)蓋就能(neng)看(kan)到(dao)。
電(dian)動助(zhu)力(li)(li)轉向系統(tong)主要由扭矩(ju)傳(chuan)感器(qi),車速(su)傳(chuan)感器(qi),電(dian)動機,減速(su)機構與電(dian)子控制(zhi)單(dan)元等組成。該系統(tong)通過(guo)(guo)扭矩(ju)傳(chuan)感器(qi)感知駕駛員在轉向操作時方向盤產生的扭矩(ju)力(li)(li)和(he)(he)轉向角度(du),就會把(ba)操控信息轉換成數字信號輸(shu)入到(dao)控制(zhi)單(dan)元,再經過(guo)(guo)控制(zhi)單(dan)元對這些信號進行運算得(de)到(dao)一(yi)個最(zui)佳的力(li)(li)矩(ju)最(zui)后控制(zhi)驅(qu)使(shi)電(dian)動機工作。以上就是整個電(dian)動助(zhu)力(li)(li)系統(tong)構成和(he)(he)工作的過(guo)(guo)程,不(bu)難看出扭矩(ju)傳(chuan)感器(qi)在電(dian)動助(zhu)力(li)(li)系統(tong)中是最(zui)為(wei)重要的器(qi)件之一(yi)。
扭(niu)矩傳(chuan)感器在(zai)(zai)(zai)電(dian)(dian)動(dong)(dong)(dong)(dong)助(zhu)(zhu)力(li)(li)(li)(li)(li)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)系(xi)(xi)統中(zhong)的(de)(de)(de)(de)作(zuo)用(yong)(yong)電(dian)(dian)動(dong)(dong)(dong)(dong)助(zhu)(zhu)力(li)(li)(li)(li)(li)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)系(xi)(xi)統可以(yi)稱(cheng)之(zhi)為EPS,它就是一種直接(jie)依(yi)靠電(dian)(dian)機(ji)提供輔助(zhu)(zhu)扭(niu)矩的(de)(de)(de)(de)動(dong)(dong)(dong)(dong)力(li)(li)(li)(li)(li)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)系(xi)(xi)統。在(zai)(zai)(zai)整個系(xi)(xi)統中(zhong),扭(niu)矩傳(chuan)感器起(qi)到決(jue)定性(xing)作(zuo)用(yong)(yong)。與傳(chuan)統的(de)(de)(de)(de)液壓助(zhu)(zhu)力(li)(li)(li)(li)(li)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)系(xi)(xi)統不(bu)同的(de)(de)(de)(de)是電(dian)(dian)動(dong)(dong)(dong)(dong)助(zhu)(zhu)力(li)(li)(li)(li)(li)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)系(xi)(xi)統具(ju)有性(xing)能應用(yong)(yong)上更大(da)(da)的(de)(de)(de)(de)優勢。它不(bu)光在(zai)(zai)(zai)需要轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)時(shi)才啟動(dong)(dong)(dong)(dong)電(dian)(dian)機(ji)產(chan)生助(zhu)(zhu)力(li)(li)(li)(li)(li),這樣(yang)能大(da)(da)大(da)(da)的(de)(de)(de)(de)減(jian)少發動(dong)(dong)(dong)(dong)機(ji)燃油消耗。電(dian)(dian)動(dong)(dong)(dong)(dong)助(zhu)(zhu)力(li)(li)(li)(li)(li)能在(zai)(zai)(zai)各(ge)種行(xing)駛(shi)工況(kuang)下提供最佳助(zhu)(zhu)力(li)(li)(li)(li)(li),減(jian)小由路(lu)(lu)面不(bu)平(ping)所(suo)引起(qi)電(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)的(de)(de)(de)(de)輸(shu)出轉(zhuan)(zhuan)(zhuan)(zhuan)矩通過傳(chuan)動(dong)(dong)(dong)(dong)裝(zhuang)置的(de)(de)(de)(de)作(zuo)用(yong)(yong)而助(zhu)(zhu)力(li)(li)(li)(li)(li)向(xiang)(xiang)系(xi)(xi)的(de)(de)(de)(de)擾動(dong)(dong)(dong)(dong),改(gai)善汽車(che)的(de)(de)(de)(de)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)特(te)性(xing),提高汽車(che)的(de)(de)(de)(de)主(zhu)動(dong)(dong)(dong)(dong)安(an)全性(xing)。和液壓助(zhu)(zhu)力(li)(li)(li)(li)(li)相(xiang)比(bi)沒有液壓回路(lu)(lu),調(diao)整和檢測更容易,裝(zhuang)配自動(dong)(dong)(dong)(dong)化(hua)程(cheng)度更高,且可通過設置不(bu)同的(de)(de)(de)(de)程(cheng)序,快速以(yi)及不(bu)同車(che)型匹配,縮短生產(chan)和開發周期(qi)。
扭(niu)(niu)矩(ju)傳感器(qi)的作用是測(ce)量動態(tai)扭(niu)(niu)矩(ju)和靜態(tai)扭(niu)(niu)矩(ju),其檢測(ce)穩定性、抗(kang)干擾性,以及精度都很好,每次使(shi)用不(bu)需要調(diao)整(zheng)為零。
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