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1、（汽车行业）外文翻译汽车防抱死系统设计 中南大学 译 文 原文题目：Automobile anti-lock braking system design译文题目： 汽车防抱死系统设计 学 院： 机电工程学院 专业班级： 车辆1002 学生姓名： 董镇山 学 号： 0806100714 Automobile anti-lock braking system(ABS)AbstractThis article introduced briefly the automobile anti-lock braking system(Anti-lock Braking System,is called AB
2、S)the control principle,the control technology which used in the present automobile anti-lock braking system has carried on the summaym and has carried on the forecast to its trend of development.Key word:Automobile anti-lock braking system control technology1.outlineAlong with automobile industrys
3、rapid development and highway unceasing construction,automobile travel security more and more takes seriously for people.To satisfy in comprehensively the brake process the automobile to the brake request,cause the brake braking force assignment to hasten reasonably.The automobile anti-lock braking
4、system(i.e.ABS)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 so on merit auto safety control systems.ABS is in the convention brake system foundation advanced version technology,s
5、eparable mechanical and electronic formula two kinds.On the modern automobile installs the anti-lock braking system massively,ABS both has the automobile sill to change under the stopping,guaranteed that automobiles brake yawing stability,prevented to have the side-slipping and to run,was on the pre
6、sent 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 anti-lo
7、ck braking system is refers to the automobile in the brake process to be able the real-time determination wheels glide rate,the automatic control function on wheels braking moment,prevents the wheel to hug dies.Thus obtains the best brake potency the electronic installation.It can wheels glide rate
8、control in certain scope,use fully between the tire and the road surface adhesion,reduces the stopping distance effectively,obviously enhances when the car braking controllability and stability,when each kind of traffic accident which has avoided the wheel hugs dies easy to appear.Along with brake i
9、ntensitys 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 many.The glide rate is bigger,the glide ingredient are less.And:u-wheel center speed;r-does
10、 not have time the ground braking force wheel rolling radius;w-wheels angular speed.Longitudinal and the lateral adhesion coefficient may express for the wheel slip rate is called critical point of fixity SK.Grips fast the pace according to the control theory is smaller than the SK region is called
11、the stable brake area,wha SK later has custom-made unstable moves the area.ABS is precisely uses between the path and tires relations,compulsory 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
12、brake effect.Figure 1 coeffient of adhesion-glide 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 composed.The ABS development is mainly studies the design optimization operation and t
13、he control procedure software,realizes the real-time presise brake adjustment technology,simultaneously raises hardwares level.2. Conrtol technology used by ABS nowThe ABS control effect is decided control technology4which to a great extent uses in the system.At present uses is mainly the logical th
14、reshold value control technology.To further enhance ABS the performance,but also proposed some based on the glide tate control technology,like the PID control,the glide modality change the srtucture controls,fuzzycontrol and so on.Each kind of control approaches the expectation by the different cont
15、rol rule the spot.2.1 PID controlsThe definition expects glide rate S0 and difference of the actual glide rate S for e=S-S0,then the PID control rule may be represented as:Therefore,the ABS controllers design sums up finally as,according to the AB S dynamic system,determined group of best arameter Kp,Ki and Kd,enable wheels glide rate to approach hypothesis goal S0 by the quickest way.2.2 The glide modality changes the structure controlAgainst holds the dead brake by the automobi
