In the sci-fi blockbusters shot in Hollywood, self-driving cars used to be one of the most eye-catching classic shots. People think that beautiful fantasies only exist in the future and cannot be realized soon, but the progress of science and technology will always have unexpected breakthroughs, which will bring unexpected surprises to mankind. Ling Du, a high-performance sports car to be launched by Shanghai Volkswagen, will be equipped with ACC adaptive cruise system, which has taken a key step in autonomous driving technology, making the shots in sci-fi movies come true, and Ling Du has thus become the leader in autonomous driving of this class of products.
Traditional cruise control: When the ideal meets the reality, the cruise control system is relatively mature in the automobile industry. As long as the vehicle speed exceeds the set speed, the system can be started. According to the change of driving resistance, the automobile intelligently adjusts the throttle opening to ensure that the vehicle always keeps a relatively constant driving speed, so that the driver does not have to step on the throttle with his right foot all the time during long-distance driving, which greatly relieves travel fatigue and improves driving safety.
However, cruise control also has an obvious disadvantage, that is, it can only provide a relatively constant driving speed and lacks adaptability to the environment. This can certainly be done in an ideal environment like expressway, a suburb with few vehicles, but the actual driving environment is basically dynamic, and all kinds of accidents will make the "constant speed" lose its function. For example, the vehicle in front suddenly slows down, such as driving in a city with more vehicles, such as encountering traffic lights on the way, such as on a road with relatively complex terrain. At these times, constant speed cruise almost lost its function, resulting in a very narrow range of use and low actual utilization.
Adaptive cruise: When the future comes true, the advanced ACC adaptive cruise system assembled in Ling Du with high version can completely overcome the above shortcomings and provide consumers with a more adaptive cruise system.
The principle of Ling Du self-propelled cruise system is not complicated. With the help of 160m long-distance detection radar hidden in the front bumper, the system can monitor the distance between the vehicle and the front vehicle in real time. According to the distance and the set cruising speed, the driving computer can actively adjust the throttle and brake in time, change the driving speed, keep a safe distance and minimize manual operation.
In this way, compared with constant speed cruise, adaptive cruise can automatically adjust the speed according to the change of environment, which can undoubtedly greatly reduce the driver's pressure. For example, there are two possibilities when the front car suddenly slows down when it encounters a roadblock. One is that the driver takes over the car in time, stops the constant-speed cruise, then brakes to slow down, and the front car accelerates again after crossing the obstacle, and resets the constant-speed cruise. Another possibility is that the driver has no time to react, and the "fixed speed cruise" that lacks adaptability directly rubs or even collides with the front car.
(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)