Smart self-adaptive cruise control method

Abstract

The invention discloses a smart self-adaptive cruise control method. The smart self-adaptive cruise control method comprises acquiring vehicle running information and road information by a self-adaptive cruise system, determining the coefficient of road adhesion according to the road information, calculating safety control parameters of a vehicle according to the coefficient of road adhesion and the vehicle running information, and regulating set vehicle control parameters according the safety control parameters to achieve smart cruise control of the vehicle. The smart self-adaptive cruise control method incorporates conditions of road adhesion into a control strategy by adding road identification information, system control parameters can be regulated according to road condition in real time, accuracy of control and safety of a running vehicle can be effectively raised on the premise of driver's driving comfortableness.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to an intelligent self-adaptive cruise control method. Background technique [0002] ACC (Adaptive Cruise Control, Adaptive Cruise Control) is a driving assistance system developed in the 1990s. In addition to the traditional cruise control function, it can also detect the traffic environment of the vehicle in real time, such as the number of targets ahead, distance, Speed, etc., and judge according to the detection results and the running state of the own car, and control the running state of the own car. The ACC system can not only reduce the driver's long-term driving fatigue, improve driving comfort, but also reduce the risk of rear-end collision to a certain extent, and improve driving safety. [0003] During the cruising process of the existing ACC system, its internal control parameters are fixed after the setting is completed, and will not change with change...

AI Technical Summary

Problems solved by technology

In the traditional cruising process, the safety time headway of the ACC system is fixed. If the safety time headway is set too small, rear-end collision or collision accidents are likely to occur on the road with low adhesion coefficient; coefficient on the road, the distance between the self-vehicle and the vehicle in front is too large, which does not conform to the driver's driving behavior

[0007] 2. When the ACC system is turned on, when the vehicle is turning on a road with a low adhesion coefficient, if the vehicle speed is high, since the lateral force provided by the road surface is small, when the lateral adhesion force is smaller than the centrifugal force during the turning process of the vehicle, the vehicle will automatically The car is easy to slip out of the driving lane and cause traffic accidents with vehicles in adjacent lanes

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