Automobile intelligent self-adaptive cruise control system and control method thereof

Abstract

The invention relates to an automobile intelligent self-adaptive cruise control system. The intelligent self-adaptive cruise control system comprises a camera module, a high-precision map and positioning module, a cruise control module and an execution module, and the cruise control module is connected with the high-precision map and positioning module, the camera module and the execution module; the camera module sends the obtained vehicle and lane line information to the high-precision map and the positioning module for matching the precise position of the vehicle in the high-precision map, and sends the lane and speed limit information in front of the vehicle to the cruise control module; the execution module comprises an electronic power-assisted steering system, a vehicle body stabilizing system, an engine control system and a gearbox control system, and the cruise control module calculates a vehicle deceleration moment and a target deceleration, sends the target deceleration to the vehicle body electronic stabilizing system, calculates a vehicle target torque and sends the vehicle target torque to the electronic power-assisted steering system. The road condition within a certain distance range in front is obtained in advance, so that a vehicle can smoothly pass through a curve at a safe speed.

Description

technical field [0001] The invention relates to the technical field of automobile electronic intelligence, in particular, relates to an automobile intelligent self-adaptive cruise control system, and discloses its control method at the same time. Background technique [0002] In recent years, with the continuous popularization of Advanced Intelligent Driver Assistance Systems (ADAS), the adoption rate of ADAS has also increased. As an important part of ADAS, ACC (Adaptive Cruise Control System) has been widely used in automotive driver assistance systems. Among them, it is favored by more and more car consumers because of its ability to improve vehicle driving safety and driving comfort. [0003] Existing ACC systems are mostly implemented based on millimeter-wave radar or cameras, which detect vehicles or obstacles in front through millimeter-wave radar or cameras, and control the vehicle according to the speed set by the driver or the set following time distance from the v...

AI Technical Summary

Problems solved by technology

When the vehicle passes through a curve, the millimeter-wave radar can know the curvature of the curve that the vehicle is currently in through the yaw angle sensor of the vehicle; while the camera can detect about 150m ahead, but if the curve is too large, the system does not have enough time The deceleration control is used to pass the curve smoothly, and there is a certain error in the detection of the curvature of the curve by the millimeter-wave radar and the camera

Therefore, the ordinary ACC system cannot cope with all road conditions. For curves with a curvature radius greater than 250m, the driver needs to take over the control

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