Self-adaptive autonomous emergency brake control algorithm based on road adhesion

Abstract

The invention discloses a self-adaptive autonomous emergency brake (AEB) control algorithm based on road adhesion. The self-adaptive autonomous emergency brake control algorithm based on the road adhesion predicates collision risk between a vehicle and a forward obstacle though obtaining forward obstacle information, information of the vehicle and a road adhesion coefficient and makes a final pre-warning and autonomous braking decision by taking control input of a driver into consideration so as to remind the driver of adopting forward collision avoidance control or avoid collision between the vehicle and the forward obstacle or reduce collision degree between the vehicle and the forward obstacle by using autonomous braking interference if necessary. According to the self-adaptive autonomous emergency brake control algorithm based on the road adhesion, on the premise of not changing the configuration of the existing vehicle-mounted sensor, the road adhesion coefficient is estimated in real time; the pre-warning and autonomous braking opportunity can be automatically adjusted in a safe distance model according to the road adhesion coefficient so that the forward collision avoidance safety on road surfaces with various road adhesion coefficients is ensured and false alarm or false brake interference is avoided; driving safety and good driving experience are both achieved; and during driver brake interference, the self-adaptive autonomous emergency brake control algorithm based on the road adhesion can apply necessary brake assistance according to the calculated collision risk.

Description

technical field [0001] The invention belongs to the technical field of automobile active safety, and in particular relates to an adaptive autonomous emergency braking control algorithm based on real-time road surface adhesion. Background technique [0002] In recent years, my country's road traffic safety situation has become more and more serious, and road traffic safety accidents have become one of the biggest public hazards in today's society. Therefore, the related advanced security technology research has been paid more and more attention. The survey of urban road traffic accidents in China shows that about 90% of traffic accidents are caused entirely by drivers. If it is possible to remind the driver and take certain safety measures before the accident, it will be very useful to reduce the occurrence of traffic accidents. The automobile AEB system is based on reducing automobile rear-end collision accidents, providing early warning to the driver during driving and au...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a road adhesion self-adaptive emergency braking control algorithm to solve the problem in the prior art that the actual road adhesion coefficient is not considered, resulting in low control accuracy and the like.

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