《《汽车安全系统技术研究分析外文翻译》-公开DOC·毕业论文》由会员分享，可在线阅读，更多相关《《汽车安全系统技术研究分析外文翻译》-公开DOC·毕业论文（16页珍藏版）》请在金锄头文库上搜索。
1、毕业设计 （ 外文翻译 ） 机电及汽车工程 学院 车辆 专业 2 班学生姓名 学 号 08230227 指导教师 教研室主任 lAutomotive safety systems and technology research and analysisOneAutomobile active security technology 1. ABS braking system Ant-lock Braking System (Braking System, lock do by ABS computers as ABS), hydraulic device, the wheel speed se
2、nsors, brake hydraulic pipeline and electrical wiring etc. Their structures are shown below. ABS tasseled for the car in various driving conditions braking performance and brake safety particularly important, especially is emergency braking, can make full use of the peak between tire and road surfac
3、e adhesion properties, improve performance and reduce automobile fight sideslip braking distance, give full play to the braking performance, but also increase the automobile braking process control. So as to reduce the possibility of car accidents. No installation ABS car, if the driving force tramp
4、le brake pedal, wheel will rapidly lower speed, and finally wheels stop turning, but body because of inertia remains forward sliding. This phenomenon was at the wheel and pavement occur between larger slip, appear this kind of situation, the car tires of automobile lateral spreads almost disappear,
5、so poor force will appear the following phenomena: (1) Steering stability fall: the steering wheel is ineffective, vehicle tail manipulation of curl, serious when vehicle circles or appear folding phenomenon; (2) Handling fall: manipulate the steering wheel and short of steering requirements; (3) Br
6、aking distance extended: more than general braking distance. So, we can imagine to have installed ABS system of the car safety is very important. 2the ASR drive torque control system ABS are used to prevent car braking process wheel lock, will wheel sliding rate control in ideal range, so as to shor
7、ten the braking distance, improve automobile braking direction stability and steering control, so as to improve the safety of the car. Along with the increase of vehicle performance requirements, not only in braking process required to prevent wheel lock, and asked the driver to prevent drive roller
8、 skating turn in the process, making cars in the direction stability, driving process steering control ability and acceleration performance, so are improved by the car drive torque steering system ASR (Accelerations Regulation) Slip. ASR is the perfect complement and ABS ASR, but most alone is set w
9、ith ABS combined together, commonly used ABS/ASR says, called antiskid control system. ASR is mainly used to prevent car in the beginning, accelerate the wheels, guarantee slip in the car accelerated rate and improve the stability in bad pavement drive attached conditions. It makes no difference spe
10、ed in the car lock ice roads and muddy road started and to improve its capacity, also can prevent high in speed by turning cars gliding pavement and rear lateral spreads phenomenon. Anyhow, prevent the wheel because ASR slip, can maximize the engine driving moment of cars had enough, ensure the long
11、itudinal force, lateral force and manipulation of power, make cars in starting, steering and accelerate the process, in gliding and muddy road, in a mountain area downhill process can steadily driving, guarantees the safety, reducing tire wear and fuel consumption, and improves the car driving capab
12、ility. 3VDC system ABS/ASR system successfully solves the brake and the car when driven direction stability problem, but cannot solve the vehicle steering stability problem driving direction. For example when steering road, inevitably by lateral and longitudinal force, only local surface can provide
13、 full lateral and longitudinal force, the pilot can control vehicles. If the ground adhesion ability lower lateral, will damage cars driving ability predetermined direction. Rainy days cars driving, often high-speed steering lateral sliding out, it is the ground because of insufficient lateral adhes
14、ion ability. To resolve the issue, and developed countries automobile industry recently in ABS/ASR system on the basis of the development of dynamic Control system (into car Dynamics Control, the abbreviation VDC Vehicle). The system of the car brake, driving, suspension, steering, engine and so on
15、various main assembly control system in function, structure organic ground comprehensive together, can make cars in all kinds of bad working conditions, such as ice road pavement, commuting, river bend pavement and took evasive action moving line, braking and acceleration and the downhill for differ
16、ent conditions, such as bearing, different type pressure and different levels of type wear all have good direction stability, to show the best driving performance. VDC applications, in braking, acceleration and steering aspects of drivers fully released request, is the car of active safety driving a new milest
