【正文】 to time, the automobile may operates the accelerator pedal when the pilot pine selfbraking. It gently stops the function to be allowed to let the automobile specially gently and smoothly stops in the municipal transportation. At present uses the brake principle of work is: The pilot steps on the lower clamp footboard, impels with to apply the brake the pressure regulator and the brake master cylinder connected piston connecting rod. The brake master cylinder will act according to the footboard strength the size, in will apply the brake in the route to form the corresponding pressure, in the machinery and under the fluid strength mutual function, will apply the brake the cylinder through the wheel nearby to impel to apply the brake to press to. Will observe and control integrated in the future in the electric control braking system, the electronic ponent will substitute in the current braking system the massive uses mechanical part, the pressure regulator also no longer need, will displace will be surveys in the brake master cylinder with the sensor the pressure as well as the brake pedal movement speed, and will transmit these materials with the electronic pulse form to in the SBC processor. In order to let the pilot be able to have similarly applies the brake the feeling, engineers have developed a special simulator, connects it around on the brake master cylinder, impels the brake pedal with the spring strength and the hydraulic pressure. In other words: In applies the brake in the process, the functional element is pletely separates with the system other parts, it is only responsible to record sends out any applies the brake to order. Around only appears when the grave mistake or in the 12V vehicles battery gives rise to a question or problem, SBC only then can automatically use the brake master cylinder, and in brake pedal and between front wheel brake rapid establishment fluid strength relation, guaranteed the vehicles safely decelerate.In under the electronic hydraulic pressure technology help, applied the brake the servosystem performance also to obtain further enhanced. When this system execution applies the brake orders, realization automatic emergency stop, rapidly produces the brake pressure and the wheel brake is automatic preinstalled may reduce applies the brake the distance. SBC not only is when emergency brake manifests its value, other essential situations also same. For example, in the dangerous situation which suddenly changes, the SBC system meets and the electronic stable formula (ESP) mutually affects, through sends out to each wheel precise applies the brake the pulse as well as/or reduces the engine speed, guaranteed the vehicles suddenly are changing in the process the security. SBC has demonstrated formidable dynamic in this and the accuracy. Is precisely because has from the SBC high pressure energy storer quicker, more precise applies the brake the pulse, ESP can soon escape when the vehicles is apart from the travel track, is prompt, steadily it stably gets down. The experiment indicated that, under the SBC participation, ESP may through fast, precise apply the brake the pulse work to be more effective, and can reveal is reducing the automobile suddenly to change. At the same time, the pilot changes the pressure along with it reduction. Had SBC and EPS, pilot39。s, the hydraulic pressure boosts the brake only then to bee the reality.At present, the vehicles guard against hold the brake control system (ABS) to develop into the mature product, and obtained the widespread application on each kind of vehicles, but these products are basic all are add, decelerate the threshold and the reference slipping rate methods design based on the wheel. Method although simple practical, but its debugging quite is difficult, the different vehicles need the different match technology, performs on many different paths to confirm。