【正文】 nd feed back adjust may act according to some optimized target design control systemdetermined that a control quantity the time seriesafter causing in period of time to move the quantity and the process will soften between the expectation path39。s design because moreover on1y need determine wheel39。 air,in order to avoid influence braking system39。s sending attite to go against in the tooth the wheel totates,causes the sensor to produce the voltage siglae unceasingly,and input the puter,the ideal speed pares with RoM,figures out wheel39。s four installment has 45 teeth or 100 tooth39。s tension,opens the discharge meat to cause to apply the brake to divide cylinder presure the pressure reduces,the solenoid valve transformes to the pressure maintenance condition,or pressurerise ready condition. The control device ECU primary mission is the signal which passes on various wheel39。s brake divides in cylinder39。s pressure four channel braking system,a vehicle rim has a solenoid valve。s angle tetarded velocity as the object,controls wheel39。s ABS,by the vehicle speed sensor(velocity radar),a round fast sensor,the control device(puter)and the implementing agency is posed. Its principle of work is the vehicle speed sensor and a round fast sensor,separately singal input the vehicle speed and round fast the puter,calculates the actual slipping rate based on the puter,and 15% one 20% ?????dose with the ideal slipping tate pares,fluctuates brake39。 s glide tate S the secondary control the glide rate is from each wheel fast signal after certain logic determined automobile39。s size relations,determines wheel39。s weighting,the step response is quick,the control energy mainly uses in reducing the deviation,but easy to present the over modulation。s antilock braking system,its input value takes the expecatation glide rate and wheel actual glide tate deviation E as well as deviation39。 way handoff control quantity39。s essential question is wheel39。s design sums up finally as,according to the AB S dynamic system,determined group of best arameter Kp,Ki and Kd,enable wheel39。s relations,pulsory wheel slid pate control nearby critical point of ficity SK,enables the toad surface adhesion property to botain the fullest display,thus achieves the best brake effect. Figure 1 coeffient of adhesionglide rate curve At present uses ABS mainly by a round fast sensor,the electronic control unit,appendices and so on pressure control valve and group of lines,pipeline is ABS development is mainly studies the design optimization operation and the control procedure software,realizes the realtime presise brake adjustment technology,simultaneously raises hardware39。wwheel39。s increase,the wheel rolling ingredient are getting fewer and fewer,but skids the ingredient to be getting more and more,generally expains in the brake process with glide rate S to skid ingredient how glide rate is bigger,the glide ingredient are less. And:uwheel center speed。s braking moment,prevents the wheel to hug obtains the best brake potency the electronic can wheel39。s brake yawing stability,prevented to have the sideslipping and to run,was on the present automobile is most advanced,the brake effect best arresting gear. The ordinary braking system applies the brake in the slippery road surface,or in emergency brake,because the wheel is easy the braking force to surpass the tire and the ground friction force hugs safely dies. The automobile antilock braking system is refers to the automobile in the brake process to be able the realtime determination wheel39。 unceasing construction,automobile39。 譯 文 原文題目： Automobile antilock braking system design 譯文題目： 汽車防抱死系統(tǒng)設計 學 院： 機電工程學院 專業(yè)班級： 機械工程及自動化 09 級（ 3） 班 學生姓名： xxxxxxx 學 號： xxxxxxxxxxxx 西安工程大學畢業(yè)設計英文譯文 1 Automobile antilock braking system(ABS) Abstract This article introduced briefly the automobile antilock braking system(Antilock Braking System,is called ABS)the control principle,the control technology which used in the present automobile antilock braking system has carried on the summaym and has carried on the forecast to its trend of development. Key word:Automobile antilock braking system control technology Along with automobile industry39。s rapid development and highway39。 travel security more and more takes seriously for satisfy in prehensively the brake process the automobile to the brake request,cause the brake braking force assignment to hasten automobile antilock braking system()more and more has applied on the automobile. ABSChinese translates is against deadlocks the brake system.It is one kind has the skid prevention,against to deadlock and