A few days ago, the controversy about AEB was widely spread on the Internet, and for a while, the rather professional word "AEB" became the focus of attention of consumers. And just when everyone was arguing, a test of BYD AEB system was **was**, and the Yangwang U8 equipped with BYD AEB system achieved braking and braking in a variety of scenarios, with a maximum braking speed of 130km h, breaking the AEB record with absolute strength.
The full name of AEB is Automatic Emergency Braking. This technology can monitor obstacles ahead through sensors such as radar and cameras, and when the system recognizes that the vehicle is at risk of a collision, it will issue a hazard warning in advance, and even take over the vehicle to take braking measures to mitigate or avoid a collision.
From the above definition, it is not difficult to find that AEB is a configuration with extremely high security value, which is of great significance to the majority of consumers. But on the other hand, AEB is also difficult to develop. Although the principle of AEB is not complicated, due to the limitations of vehicle perception ability, software algorithms, braking systems, etc., most models in the industry can only achieve car-to-car braking at a speed of 60km h.
Judging from the **test**, the BYD AEB system has achieved braking in three scenarios: 130km h for the stationary front car during the day, 110km h for the disappearing front car during the day, and 110km h for the stationary front car at night, and there is still a considerable distance from the front car after braking, and the performance is very good.
Based on the above test results, three conclusions can be interpreted. First, the application scenarios of BYD's AEB system are extremely wide, and it can achieve full coverage of the legal speed limit during the daySecond, the BYD AEB system has a very high response speed and can cope with the sudden lane change of the vehicle in front of the high-speed vehicleThird, the stability of BYD's AEB system is excellent, even in high-speed scenes at night, the perception system, chassis system, and braking system have not dropped the chain.
It can be seen that the strength of BYD's AEB system has far exceeded the mainstream level of the industry and achieved an industry-leading position.
So, how did BYD do it?
BYD did not reply to this, and the author speculates that this is related to the Yi Sifang, Yun Yuan and other technologies carried by the U8. Yi Sifang is a drive system composed of four independent motors, with four wheels independent torque vectoring control ability, which can allow the vehicle to reasonably distribute the power of the four wheels during emergency braking, and ensure the tire grip and vehicle stability. The Yunnan-P integrates mechanical, hydraulic, and electronic control systems, supports horizontal, longitudinal, and vertical integration intelligent control, optimizes the body posture under emergency braking, and improves the safety of the occupants in the car. It is with the blessing of the above two technologies that the BYD AEB system can achieve high-speed braking without losing control.
Of course, the perception and computing capabilities of the BYD AEB system must also be extremely good, otherwise it is impossible to achieve braking at a speed of 110km h in a night environment. A leader of an auto company once said that "the complexity of the AEB scenario is too high, and it is indeed very difficult to do it well, and it requires a large mileage and sample size test". It can be seen that BYD's engineers should have made great efforts to optimize the trigger and response logic of the AEB system.
Write at the end
For a long time in the past, BYD, a car company, gave everyone the impression that the new energy technology was outstanding and the intelligent strength was mediocre. But this **test** completely broke the public's prejudice against BYD, and where we can't see it, BYD has been working hard. We also believe that BYD, which is becoming stronger and stronger, will continue to lead in the future competition!