外文翻譯---汽車防抱死制動(dòng)系統(tǒng)(ABS)
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附錄 附錄 1 is in on on to of . s s s To in to to on “ It is to so on is in On s to to s to to on is in or in is to is to in to be s on s to It s in of to s to be in to is s ). of is of K. to is K is K is s of K, to of t BS by a so on of is BS is s 2. BS BS is 4] to a in At is To BS on ID so of by he 0 of e=ID be BS s up to BS of p, Ki d, s to 0 by by to be to s is s in of k, in by s s in S,×S) to to ). , by to to e=is as s as as s of C, is an U =α × E + (1C is to of is is to s is in to is is to be to on 1, α2∈ (0,1), 1 in to to s s of as BS , of ω so on of or a to BS of at to s is s s by a is of is a on 5% 0% s by to to in by it is a so on is of of BS to be a is is t s as s by a is mm In to to in s a a in to to be to of is as 1) to to go is to 2) s in s to at 3) s to to to to or CU is on on by is , , , . 101tz is is to of is is is of BS in It is a on s 5 00 s on a s to go in to s or or of to to 3. by BS 1) or in s in to s (2) is BS a is (3) BS to 4. of a of to of s s is is BS it by no of of is BS s is to on to is to BS in (1) at BS to be at is to a in of to s to be in is on in s to to a as a of so on s to (2) Is is s in BS to is is s so to in BS on on by it is s is so on be (3) by BS 10], of in to in be in so on to s in to so on In to CU by Or to s is a to to CU CU 11], to 5. he in of or of At BS on of by In by to 汽車防抱死制動(dòng)系統(tǒng)( 摘要 : 本文簡(jiǎn)要介紹了汽車防抱死制動(dòng)系統(tǒng)( 稱 控制原理,對(duì)目前汽車防抱死制動(dòng)系統(tǒng)所采用的控制技術(shù)進(jìn)行了綜述,并對(duì)其發(fā)展趨勢(shì)進(jìn)行了預(yù)測(cè)。 關(guān)鍵詞 : 汽車 ; 防抱死制動(dòng)系統(tǒng) ; 控制技術(shù) 隨著汽車工業(yè)的迅猛發(fā)展和高速公路的不斷修建,汽車的行駛安全性越來越為人們 重視 。 為了 全面滿足制動(dòng)過程中汽車對(duì)制動(dòng)的要求,使制動(dòng)器制動(dòng)力分配更趨合理。汽車防抱死制動(dòng)系統(tǒng)(簡(jiǎn)稱 越來越多地應(yīng)用在汽車上。 “中文譯為 “ 防鎖死剎車系統(tǒng) ”. 它是一種具有防滑、防鎖死等優(yōu)點(diǎn)的汽車安全控制系統(tǒng)。 分機(jī)械式和電子式兩種。 現(xiàn)代汽車上大量安裝防抱死制動(dòng)系統(tǒng), 有普通制動(dòng)系統(tǒng)的制動(dòng)功能,又能防止車輪鎖死,使汽車在制動(dòng)狀態(tài)下仍能轉(zhuǎn)向,保證汽 車的制動(dòng)方向穩(wěn)定性,防止產(chǎn)生側(cè)滑和跑偏,是目前汽車上最先進(jìn)、制動(dòng)效果最佳的制動(dòng)裝置。 普通制動(dòng)系統(tǒng)在濕滑路面上制動(dòng),或在緊急制動(dòng)的時(shí)候,車輪容易因制動(dòng)力超過輪胎與地面的摩擦力而安全抱死。 汽車防抱死制動(dòng)系統(tǒng)是指汽車在制動(dòng)過程中能實(shí)時(shí)判定車輪的滑動(dòng)率,自動(dòng)調(diào)節(jié)作用在車輪上的制動(dòng)力矩,防止車輪抱死。從而獲得最佳制動(dòng)效能的電子裝置。它能把車輪的滑動(dòng)率控制在一定的范圍之內(nèi),充分地利用輪胎與路面之間的附著力,有效地縮短制動(dòng)距離,顯著地提高車輛制動(dòng)時(shí)的可操縱性和 穩(wěn)定 性,從而避免了車輪抱死時(shí)易出現(xiàn)的各種 交通事故。 隨著制動(dòng)強(qiáng)度的增加,車輪滾動(dòng)成分越來越少,而滑動(dòng)成分越來越多,一般用滑動(dòng)率S 來說明制動(dòng)過程中滑動(dòng)成分的多少?;瑒?dòng)率越大,滑動(dòng)成分越少。 其中: u—— 車輪 中心 的速度; r—— 沒有地面制動(dòng)力時(shí)的車輪滾動(dòng)半徑; w—— 車輪的角速度。 縱向和側(cè)向附著系數(shù)可表達(dá)為車輪滑動(dòng)率的函數(shù)(如圖 1)。最大縱向附著系數(shù)所對(duì)應(yīng)的滑動(dòng)率稱為臨界穩(wěn)定點(diǎn) 據(jù)控制理論把滑動(dòng)率小于 區(qū)域稱為穩(wěn)定制動(dòng)區(qū), 后的為非穩(wěn)定制動(dòng)區(qū)。 是利用道路與輪胎之間的關(guān)系,強(qiáng)制性地把車輪滑動(dòng)率控制 在臨界穩(wěn)定點(diǎn) 近,使路面附著性能得到最充分的發(fā)揮,從而達(dá)到最佳的制動(dòng)效果。 圖 1 附著系數(shù) 目前所采用的 要由輪速傳感器,電子控制單元,壓力控制閥和線束、管路等附件組成。 開發(fā)主要是研究設(shè)計(jì)優(yōu)化運(yùn)算和控制程序軟件,實(shí)現(xiàn)實(shí)時(shí)精確制動(dòng)調(diào)節(jié)的技術(shù),同時(shí)提高硬件的水 平。 采用的控制技術(shù) 控制效果很大- 1.請(qǐng)仔細(xì)閱讀文檔,確保文檔完整性,對(duì)于不預(yù)覽、不比對(duì)內(nèi)容而直接下載帶來的問題本站不予受理。
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