What Does a Car's Automatic Following System Rely On?
2 Answers
The automatic following system of a car mainly relies on the ACC control unit, which can coordinate with the anti-lock braking system and the engine control system to appropriately brake the wheels, ensuring the vehicle maintains a safe distance from the one ahead. Introduction to Adaptive Cruise Control System: The adaptive cruise control system is an advanced system built upon the traditional cruise control system that maintains a set speed. It adds the function of keeping a reasonable distance from the vehicle ahead. How the Adaptive Cruise System Works: Based on information detected by the inter-vehicle distance sensor, as well as the vehicle speed sensor and yaw rate sensor that determine the vehicle's driving route, the system judges whether there is a vehicle ahead in the same lane. The inter-vehicle distance sensor uses microwave radar or distance radar.
Recently, I experienced this feature while driving on the highway. The car's automatic following mainly relies on three things. The most crucial is the camera on the windshield, which scans the lane lines like an eye; the front radar measures the distance to the vehicle ahead, detecting hundreds of times per second; plus the wheel speed sensors calculate the car's own state. These data are aggregated into the computer, which uses algorithms to decide whether to accelerate or brake. It's quite interesting to use this feature in the rain, but remember not to take your hands completely off the steering wheel—the system's reaction is still not as fast as a human's when encountering sharp turns or sudden lane changes.
