【正文】 region is called the stable brake area,wha SK later has custommade unstable moves the is precisely uses between the path and tire39。s size and the mark,the guarantee system in the glide region very small scope,the state point locus(S,*S)along moved the festival curve to slide slippery to the control objective(SK,0). Usually takes the braking moment for controlled variable U,the cut condition is: And Mb,Mb+ represent the braking moment which decided by the governing system to reduce,to increase two different conditions separately. For the cut function,e=SSk is the actual glide rate telative target point devivation. Fuzzy control Regarding take the glide tare as controlled member39。s velocity,calculates the reference glide rate,has the difference with the actual glide rate. Double parameter control Double parameter control39。s pressure grows to certain value,charging valve cutoff support maintains at the pound state,three panels seal,maintain the brake pressures mutually. 3)voltage dropping,when the solenoid valve works,the support overes two spring39。s normal work. (2)is loaded with the ABS automobile,every year should replace a brake ,the brake fluid water absorbability is very strong,after the watery,not only will reduce the boiling point will have the corrosion, will also create the brake potency decline. 3)inspects the ABS antilock braking system to cramp out the power source frrst. of development Uses the logical threshold value control algorithm may avoid a series of numerous and diverse theoretical analysis and to some element of certainty quota measurement. Simplified controller39。s vehicle speed sensor (for example electrooptical type Doppler and so on) the present will most have the possibility to apply in the automobile ABS system. This time may take seriously based on the glide rate control algorithm. And the fuzzy control will not rely on the object by the mathematical model is advantageous uses person39。 “ ABS”中文譯為“防鎖死剎車系統(tǒng)”。 隨著制動(dòng)強(qiáng)度增加，車輪滾動(dòng)成分越來越少，而滑移成分越來越多，一般用滑移 S 來說明制動(dòng)過程中滑移成分的多少。 ABS 的開發(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)精確的控制調(diào)節(jié)的技術(shù)，同時(shí)提高硬件的水 平。 為切換函數(shù)， e=SSk 為實(shí)際滑移率相對(duì)目標(biāo)的偏差。 ω 等三種秒速車輪運(yùn)動(dòng)情況或動(dòng)力學(xué)狀態(tài)的參數(shù)。執(zhí)行機(jī)構(gòu)由電磁閥及繼電器等組成。三通道制動(dòng)系統(tǒng)， 每個(gè)前輪擁有一個(gè)，兩個(gè)后輪共用一個(gè)。 控制裝置 ECU 的主要任務(wù)是把各車輪的傳感器傳回來的信號(hào)進(jìn)行計(jì)算、分析、放大和判別，再由輸出級(jí)將指令信號(hào)輸出到電磁閥，去執(zhí)行制動(dòng)壓力調(diào)節(jié)任務(wù)。否則，制動(dòng)液吸濕性很強(qiáng)，含水后不僅會(huì)降低沸點(diǎn)，產(chǎn)生腐蝕，而且還會(huì)造成制動(dòng)效能衰退。其中預(yù)測(cè)控制技術(shù)值得重視。性好，簡(jiǎn)單實(shí)用等特點(diǎn)而會(huì)被廣泛采用。 參考文獻(xiàn) l 余志生 . 汽車?yán)碚?(修訂版 ) .北京 :機(jī)械工業(yè)出版社， 1993 2 李朝 祿 .汽車制動(dòng)防抱裝置 CABS) 構(gòu)造與原理 . 劉榮華譯 .北京 :機(jī)械工業(yè)出版社， 1995 3 柯愈治， 謝懷喧等 .汽車防抱制動(dòng)系統(tǒng)結(jié)構(gòu)原理與檢修 .北京 :人民交通出版社， 1998 4 潘旭峰 .現(xiàn)代汽車電子技術(shù) .北京 :北京理工大學(xué)出版社， 1998 5 周云山， 于秀敏 . 汽車電控系統(tǒng)理論與設(shè)計(jì) .北京 :北京理工大學(xué)出版社， 1999 6 張洪欣 .汽車系統(tǒng)動(dòng)力學(xué) .上海 :同濟(jì)大學(xué)出版社， 1996 7 Gerorge , Gerard , etc. Fuzzy Logic Continues and Quantizing Control of an ABS Braking system. SAE Technical paper 940030 , 1033~ 1042 8 司利增 . 汽車防滑控制系統(tǒng)一 ABS 與 ASR. 北京 :人民交通出版社， 1996 9 席裕庚。 5 總結(jié) 汽車防抱死制動(dòng)系統(tǒng) CABS) 能提高汽車在低附著系數(shù)或變附著系數(shù)路面條件下的制動(dòng)性能。 (2) 隨著體積更小，價(jià)格更便宜，可靠性更高的車速傳感器的出現(xiàn)， ABS 系統(tǒng)中增加車速傳感器成為可能，確定車輪滑動(dòng)率將變得準(zhǔn)確而快速。該算法 現(xiàn)己趨近成熟，為當(dāng)前汽車 ABS 系統(tǒng)所普遍采用，但它并非最佳的控制算法。在車輪軸上安裝有 45 齒或 100 齒的齒圈，輪速傳感器的傳感頭裝在齒圈的頂上。 2) 壓力保持當(dāng)車輪的制動(dòng)分缸中的壓力增長(zhǎng)到一定值時(shí)，進(jìn)油閥切斷關(guān)閉。為了準(zhǔn)確無誤地測(cè)量輪速，傳感頭與車輪齒圈間應(yīng)留有 1mm 間隙。 其工作原理是車速傳感器和輪速傳感器，分別將車速和輪速信號(hào)輸入電腦，由電腦計(jì)算出實(shí)際滑移率，并與理想滑移率 15 %— 20 %作比較， 再通過電磁閥增減制動(dòng)器的制動(dòng)力。當(dāng) α較大時(shí)，表明對(duì)偏差的加權(quán)大，階躍響應(yīng)快，控制能量主要用于減少偏差，但易出現(xiàn)超調(diào)，但響應(yīng)過程較慢。每種控制均以不同的控制規(guī)律逼近期望的點(diǎn)。最大的縱向附著系數(shù)所對(duì)應(yīng)的滑移率稱為臨街穩(wěn)定點(diǎn) SK。 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完全抱死。s ECU is not on1y the respective independence constructs own d lamic pensator moreover must establish a highlevel d lamic synchronizer to help unified again to determine each ECU the control policy strengthens each ECU the control when the solution dispersion control system existence unstable mold cannot use dynamic dispersion control calm question [1]enables the plete bikes overall performance to obtain the guarantee. 5 Summary The automobi1e antilock braking system S) can enhance the automobile in the low coefficient of adhesion or changes under the coefficient of adhesion road surface condition the braking quality At present the ABS control technology mainly uses the logical threshold value control method but along with vehicle speed sensor technology develop ment based on wheel slip rate each kind of control algorithm by widespread value and use. Moreover. 1n the future the automobile electronic control technology and the equipment will realize the resource sharing and the integrated control by the work way and toward the multiobjective integrated controls enhances the system performance cost ratio the direction to develop. 汽車防抱死 制動(dòng)系統(tǒng) （ ABS） 摘 要 西安工程大學(xué)畢業(yè)設(shè)計(jì)英文譯文 8 本文簡(jiǎn)要介紹了汽車防抱死制動(dòng)系統(tǒng)（ Antilock Braking System，簡(jiǎn)稱 ABS）的控制原理，對(duì)目前汽車防抱死制動(dòng)系統(tǒng)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)。s eηor to be smallest in the future. What because this algorithm uses is the online trundle optimizes unceasingly and unceasingly carries on the feedback in the optimal process through the actual system output and the forec