浅析电子驻车技术的应用

1、 . . . 浅析电子驻车技术的应用摘 要电子驻车系统(EPB：Electrical Parking Brake)是指由电子控制方式实现停车制动的技术，把长期使用的传统型手驻车制动模式推进了一大步。本文全方面介绍EPB系统的基本理论，基本原理以与在开发工作中需要注意的事项。 pick to electronic Parking system (EPB: Electrical Parking Brake) is to point to by the electronic control way to realize the Parking Brake technology, in the lon

2、g-term use of traditional hand Brake mode was a big step forward. EPB system all aspects of this article introduced the basic theory, basic principle and the matters need to pay attention to in the development work.关键词EPB 电子驻车 应用 key words EPB electronic application in the car1 EPB与传统手制动相比的优点1 EPB a

3、dvantages compared with traditional hand brake1.1 EPB系统可以在发动机熄火后自动施加驻车制动。驻车方便、可靠，可防止意外的释放（比如小孩、偷盗等）。1.1 the EPB system can automatically after the engine flameout apply parking brake. Parking is convenient, reliable, can prevent the accidental release (such as children, stealing, etc.).1.2不同驾驶员的力量大小

4、有别，手驻车制动杆的驻车制动可能由此对制动力的实际作用不同。而对于EPB，制动力量是固定的，不会因人而异，出现偏差。1.2 different pilot strength vary, hand the parking brake lever on the parking brake may brake force of the actual effect is different. For the EPB, braking power is fixed, does not vary from person to person, appear deviation.1.3可在紧急状态下组委行车制

5、动用。1.3 can be in a state of emergency committee crane brake use.2 EPB的功能2 the function of the EPB2.1基本功能：通过按钮实现传统手刹的静态驻车和静态释放功能。2.1 basic function: through the button realize traditional hand brake static in the car and the static release function.2.2动态功能：行车时，若不踩踏板刹车，通过EPB按钮，一样也可以实现制动功能。2.2 dynamic

6、capabilities: when driving, if not pedal brake, through EPB button, also can realize brake function.2.3“熄火控制”模式：当汽车拔钥匙熄火时，自动启用驻车制动，发动机不打火驻车不能解除。2.3 "flameout control" mode: when the car keys off pull, automatic parking brake, engine not lighter cars cannot remove.2.4开车释放功能：当驾驶员开车时，踩油门，挂挡后自

7、动解除驻车。2.4 drive release function: when drivers, step on the gas, after gear automatic lift in a car.2.5启动约束：点火关闭，释放约束模式（保护儿童），不用操作制动踏板，即可释放约束模式。2.5 start constraints: ignition off, release constraint patterns (children), don't have to brake pedal operation, can release constraint patterns.2.6紧急释

8、放功能：当电子驻车没电需要解除驻车时，可用专门的释放工具释放驻车。2.6 emergency release function: when the electronic parking without power need to lift in the car, the release of the available special tool release in the car.3 拉线式EPB的组成与各部件的作用3 guyed EPB and composition of each component3.1拉线。拉线和传统的驻车系统中拉线所起的作用完全一样，就是把力从EPB总成传递到驻车

9、制动器上实现驻车功能。拉线式EPB有单拉线和双拉线两种。3.1 pull. Stay and stay in the traditional parking system's role fully, is the force from the EPB assembly passed to the function of parking on the parking brake. Guyed EPB has two kinds of single anchor and double anchor.单、双拉线有各自的优点和缺点。相比较起来双拉线有较大的拉线效率，拉线行程短，但布置没单拉线灵

10、活，产生一样的拉力，控制器需要加载的力大。工作时，双拉线EPB控制器同时带动两根拉线运动，带动制动器驻车，而单拉线时，EPB控制器是只带动了一根拉线，然后通过拉索平衡器此拉线带动后面的两根拉线驻车。Single or double thread has its own advantages and disadvantages. Efficiency compared to the double arrows have larger thread, cord short trip, but I can't single stay flexible layout, produce the

11、same tension, the force controller needs to be loaded. Work, double thread EPB controller drives the two arrows at the same time, motion, drives the brake in the car, and the single arrows, EPB controller is only for a stay, then through the balancer lasso this guy drive behind two stay in the car.单

12、拉线式样的EPB，一根拉线带动两根拉线的原理为：第一根拉线的芯线在控制器的带动下产生移动，其带动拉线向右移动，然后因为第一根拉线受力弯曲，第一根拉线通过固定在其拉线护套上面的平衡器带动拉线1向左移动，从而实现了一根拉线带动两根拉线移动的目的。Single drawing style of EPB, one guy to drive the two arrows principle is: the first piece of cord conductor moving under the driving of the controller, it drives the pull to the

13、right, and then pull force because the first bend, the first guy through the fixed on the cord sheath balancer drive stay 1 to move to the left, to achieve the the purpose of a guy driving two arrows move.3.2按钮。通过按或者拉按钮控制EPB驻车和解除驻车，按钮上有背景灯，提醒驾驶者是否已工作。3.2 the button. Control via a button press or pul

14、l EPB remove parking and parking, the button background light, remind the driver is working.3.3紧急工具。在EPB因断电不工作时，实现驻车解除功能。3.3 emergency tool. Don't work in EPB due to power outages, realizing parking lift function.3.4电机。EPB工作时的动力来源，由其来带动齿轮机构工作实现驻车。（有人仅靠电子驻车纸面意思可能会担心驻车后，出现没电的情况怎么办？实际上电子驻车只是靠电触发齿轮机

15、构工作，最终使车长时间驻车的还是机械机构，并且国家法规中也明确要求，驻车要用可靠的机械机构来完成）3.4 the motor. EPB work power source, driven by the gear mechanism work in the car. (some only on electronic parking mean paper may worry that after parking, is there no electricity? Actually electronic parking is only triggered by electricity gear me

16、chanism work, eventually make the vehicle parking time and mechanical mechanism, and also clear requirements in national laws and regulations, in the car with a reliable mechanical agencies to complete)3.5齿轮机构。不同厂家EPB的此部分机构的工作原理不一定一样但其作用是一样的。都是力的传递机构，把力由电机齿轮的转动转化成拉线方向上力。其齿轮结构的工作原理如右图电机带动拉线所在的外齿轮机构和齿

17、轮机构旋转，因为旋转方向相反，带动连接在外齿轮机构的拉线运动，实现驻车。3.5 gear mechanism. Different manufacturers EPB work principle of this part of the mechanism is not necessarily the same but the effect is the same. Is a force transmission mechanism, the force by the rotation of the motor gear into pull direction force. The worki

18、ng principle of gear structure such as the right motor drives the pull of outer gear mechanism and inner gears rotate, for rotating in the opposite direction, drive the cord attached to the inside and outside gear mechanism movement, parking.3.6ECU和传感器。ECU用来控制EPB对外的信息交流和反馈。传感器用来感应拉力的大小。3.6 ECU and t

19、he sensors. ECU is used to control EPB foreign exchange of information and feedback. The size of the sensor to sense tension.4 EPB总成的工作原理和其功能的实现原理4 EPB work principle and the realization of the function of the principle of assembly4.1EPB总成的工作原理。拉线式EPB工作原理为：通过开关给ECU一个通断信号，EPB的ECU控制电机进行旋转，然后由部的齿轮机构把此力

20、输出到拉线上，由拉线带动制动器进行驻车。4.1 EPB assembly works. Guyed EPB work principle is: through the switch to ECU an on-off signal, EPB ECU to control motor rotation, and the internal gear mechanism to put the power output to the guy, the guy drive the parking brake.4.2EPB各功能的实现原理4.2 EPB principle of realization o

21、f each function（1）基本功能。最基本的功能，静态释放和静态驻车功能，通过按钮驻车和解除驻车此工作原理简单，也就是上面的EPB工作原理。(1) basic function. And the static and the most basic function, the static release parking function, through the button in the car and lifted parking the principle is simple, also is the working principle of the EPB.（2）EPB卖点之

22、一的动态功能。当车在行车状态，速度大于12km/h,若按下EPB按钮，ECU指挥马达带动拉线驻车，当车轮要抱死，有滑移的倾向时，ECU通过CAN得到这个信号后，会使拉线力减小，以便不使车轮抱死，如此循环，直至车停下为止。虽然EPB有此功能，但各个EPB厂家，并不推荐客户把EPB当作行车制动器使用，并且还明确要求客户，此功能只能在常规制动器失效或不可使用踏板的紧急情况下才能使用，这是因为在行车中，驻车制动器启动后，那么就把制动力全部加在后轮，对后制动器的损害是很大的。(2) EPB one selling point of dynamic capabilities. State when the

23、 car in drive, speed is greater than 12 km/h, if the EPB button, motor drive the guy's car ECU command, when the wheels to lock, have a tendency to slip when the ECU by CAN get the signal, CAN make the pull force is reduced, so as not to make the wheel lock, so circulates, until stopped. The EPB

24、 has this function, but each EPB manufacturer, don't recommend customer to EPB as vehicle brake is used, and customer also made clear requirements, this functionality can only be used in conventional brake failure or pedal in an emergency to use, this is because in the road, parking brake starts

25、, then all the braking force on the rear wheel and the brake after damage is very big.（3）“熄火控制”模式。发动机熄火后，通过CAN把此信息传递给ECU，ECU指挥EPB驻车(3) "flameout control" mode. After the engine flameout, through CAN convey this information to ECU, the ECU command EPB's car（4）EPB的另一卖点功能：开车释放功能。要实现该功能，则E

26、BP系统需要知道驾驶员是否希望车辆开始行驶。对自动挡车辆来说，EPB可以通过变速器信息与油门信息了解车辆状态。然后ECU指挥EPB释放驻车。而对手动挡车辆来说，原有的配置所能提供的信息无法确认驾驶员的期望。为了实现该功能，需要在车辆上加装档位传感器与离合器传感器。(4) EPB another selling point of the function: driving release function. In order to realize the function, the EBP system need to know whether the driver want cars to s

27、tart driving. For automatic vehicle, EPB can understand vehicle status information through the information transmission and the throttle. Then the ECU command EPB releasing in the car. And competitors move in vehicles, the original configuration can provide information can't confirm the driver&#

28、39;s expectations. In order to realize the function, need sensors on the vehicles equipped with gear and clutch sensor.（5）紧急释放功能。用专门开发的紧急释放工具来实现此功能。工具的工作原理为，用专门开发的EPB工具，先插入紧急工具孔，然后旋转，使齿轮旋转带动涡杆移动，解除驻车。有时为了使解除驻车方便，或者不便于使用刚性的紧急释放工具，也可以使用易曲工具，实现过程为：把紧急释放工具由刚性改成可弯曲的易曲工具，然后根据EPB的布置位置，设计合理的导向管，设计导向管的原则为将来在

29、使用工具时比较方便，不需要拆卸其它零件，或者钻到车下。导向管一端裸露，另一端固定死在电子驻车工具孔上，使用时，取出紧急工具，把工具从导向管裸露端插入，顺着导向管，把工具连接到电子驻车上，然后转动工具摇把，即可释放驻车。在开发易曲工具中需要注意的是：1.工具的易曲长度不能太长否则会因工具弯曲端过长而使传递到电子驻车的力矩解除不了驻车。2.导向管扭曲的幅度不能过于大，否则工具在通过导管时的难度就很大，甚至通不过导管。(5) emergency release function. Using specially developed emergency release tool to implemen

30、t this functionality. Working principle for the tool, with specially developed EPB tools, insert emergency tool hole first, then rotate, the gear spins moving vortex rod, lift in a car. Sometimes in order to remove convenient parking, or rigid emergency release tool is not easy to use, also can use

31、flexible tools, implementation process as follows: the emergency release tools from rigid to flexible flexible tools, and then according to the location to the layout of the EPB, rational design of the pipe run, the design principle of pipe run when using the tool for the future more convenient, do

32、not need to remove the other parts, or drill into the car. Pipe run naked at one end, and the other end fixed died on the electronic parking tools hole, when using, take out the urgent tool, the tool from the pipe run exposed end inserted, along the pipe run, the tool is connected to the electronics

33、 in the car, and then crank rotating tool, you can release the parking. In developing flexible tools need to be aware of is: 1. The tool flexible length can't be too long otherwise it will due to bending tool is too long and make the transfer to the electronic torque in car lift in a car. 2. The

34、 pipe run distortions cannot too much, otherwise the tool through catheter when the difficulty is very big, even pass the catheter.5 拉线式EPB的布置5 guyed EPB arrangement5.1EPB的布置5.1 the arrangement of EPBEPB的布置需要注意以下几点：EPB decorate need to pay attention to the following:（1）若EPB布置在车身下，要设计合理的支架，力求把EPB包起来，

35、防止车底下高速飞起的石子打在EPB壳体上。（2）注意保证EPB周围的温度不能过高，要在其工作温度围。（3）注意选择合理的缓冲垫来起到防震的效果。（4)EPB位置的选择，要考虑到将来紧急工具使用的方便性。(1) if the EPB arrangement under the body, to design the reasonable support, makes every effort to wrap the EPB, prevent high speed flying underneath the stone hit on EPB shell. (2) pay attention to guarantee the EPB surrounding temperature not too high, do you want to work in the temperature range. (3) choose reasonable cushion to shock effect. (4) EPB location choice, want to consider the future