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中英文文献翻译-汽车防抱死制动系统

附录A 外文文献

As one kind of automobile electro-technology, Anti-lock Braking System (ABS) improves automobiles passablility, steering stability and initiative security by a long way on all types of adhesion road.

Anti-lock braking systems were first developed for aircraft use in 1929, by the French automobile and aircraft pioneer, Gabriel V oisin, as threshold braking on airplanes is nearly impossible. An early system was Dunlop's Maxaret system, introduced in the 1950s and still in use on some aircraft models. These systems used a flywheel and valve attached to the hydraulic line that fed the brake cylinders. The flywheel was attached to a drum that ran at the same speed as the wheel. In normal braking the drum and flywheel would spin at the same speed. If the wheel slowed suddenly the drum would do the same, leaving the flywheel spinning at a faster rate. This caused the valve to open, allowing a small amount of brake fluid to bypass the master cylinder into a local reservoir, lowering the pressure on the cylinder and releasing the brakes. The use of the drum and flywheel meant the valve only opened when the wheel was turning. In testing, a 30% improvement in braking performance was noted, because the pilots immediately applied full brakes instead of slowly increasing pressure in order to find the skid point. An additional benefit was the elimination of burned or burst tires.

Anti-lock Braking System(ABS) is an important device to improve the activesafety of vehicle.With the development of automotive today,its significance hasbeen regarding more than ever.Anti-lock braking system (ABS) is braking-system closed-loop control device which prevent wheel lock when braking and,as a result,retain the vehicle steerability and stability.The main components of ABS including:hydraulic modulator,wheel speed sensor,and ECU which used toprocessing signal and controlling actuators. Firstly,the paper introduces the history and basic function of the anti-lockbraking system and the whole structure and control principle of system also beenmentioned.According to MATLAB/Simulink,the components’models have beenestablished,which including:single wheel dynamic model,semi-car braking model,seven free-degree whole car model,actuator model.

Establish the model of ABS after analyzing controlalgorithms.

Moreover,Compare the SMC control effect with traditional logical control effect.The simulation result clearly shoes the better effectiveness of applied.Basedon the varied wheel acceleration on the different road surface when applied samebraking force,an algorithm for identifying road surface has been invented.Thesimulation result shows the braking distance has been shorten apparently afterapplied the road identification.Based on the vehicle-road dynamic model, the road characteristic parameter, which depends on differ- ent types of road surfaces, is introduced and a new method of road surface identification for automotive anti-lock braking system (ABS) is proposed. According to the characteristics of vehicle-road dynamic model, a simple math resolution method of the model' s factors is established. Only using the information of wheel speed, the vehicle reference velocity and the wheel slip ratio are estimated real-timely. And based on the wheel dynamic model, the road characteristic parameter is determined to identify the road surface for the determination of thresholds of ABS regulative parameters. With this new method, the road surface identification can be accurately obtained and calcu- lation time is short that it can meet the ABS real time control need, and it also improves the performance of ABS.

附录B 外文文献翻译

汽车防抱死制动系统(Anti-lock Braking System,简称ABS)作为一种汽车电子技术,大大地提高了汽车在各种附着系数路面的可通过性、操纵稳定性及主动安全性。

防抱死制动系统是首次开发使用的飞机于1929年由法国汽车和飞机的先驱,如在飞机上加布里埃尔佛伊辛制动门槛,几乎是不可能的。早期的系统是邓洛普的Maxaret系统,在20世纪50年代提出并仍在使用的一些飞机模型。这些系统所用的飞轮和连接到液压刹车线,馈气瓶阀门。飞轮附于鼓,在相同的车轮速度跑。在正常的制动鼓和飞轮会以相同的速度旋转。如果车轮突然放慢鼓会做相同的,离开飞轮以更快的速度旋转。这造成阀打开,使制动液的一个小数额绕过到本地水库主缸,降低气缸压力和释放刹车。作者:鼓和飞轮使用意味着只阀门打开时,车轮转动。在测试中,在制动性能提高了30%指出,由于飞行员立即刹车,而不是完全适用于缓慢增加压力,以便找到撬点。另外一个好处是,消除焚烧或车胎爆裂。

防抱死制动系统(ABS)是一种重要的设备,以提高车辆行驶安全性。今天的汽车发展历史,其意义就超过防抱死制动系统(ABS)的制动系统闭环控制锁定装置,防止车轮在制动时,并作为结果,保留车辆的可操作性和主要组成部分包括:ABS 执行器:液压调节器,车轮速度传感器和ECU的使用轮速信号和控制致动器。首先,介绍了历史和反馈系统和整体结构和控制系统的原理也应用到MATLAB/Simulink环境中,其中包括:单轮的动态模型,半基本功能汽车制动模型,自由程度整车模型,执行器模型。

基于车辆行驶动力学模型,道路特征参数,对路面不同类别的依赖,并介绍了汽车的道路防抱死制动系统(ABS)表面识别的一种新方法。根据车辆行驶的特点,动态模型,一个简单的数学模型的因素分解法成立。只有利用轮速,参考速度和车辆的车轮滑移率的信息,估计实际及时。而在轮轨动力模型,基于道路特征参数测定,以确定该参数的ABS调节阈值测定路面。有了这个新的方法,识别路面可以准确获取和计算器时间短,能满足ABS的实时控制的需要,而且还提高了ABS的性能。