Research on the influence of AEB braking on THOR 50th dummy sitting posture

Abstract

Automobile emergency braking system refers to a special device that applies a certain emergency braking force to automobile wheels to achieve a certain degree of forced braking. Emergency braking has great damage to the vehicle and tire, and often causes the vehicle to swing, turn around, lose azimuth control or sideslip due to the inconsistent braking of the left and right wheels, or the difference of adhesion coefficient, and even cause accidents. In order to improve the safety performance of emergency braking, the influence of AEB braking on the riding posture of Thor 50th dummy is studied in this paper. Firstly, AEB braking signal is collected through experiment; Then, the characteristic parameters of AEB waveform are extracted based on the least square method; Finally, taking the extracted characteristic parameters as pre-collision traction system input signal, the head and chest dynamic displacements of Thor 50th dummy are quantitatively analyzed. The results show that: In the three test speeds of CCRs, when the initial speed is 40km/ h and the acceleration is 0.7g, the head chest displacement is the largest, the head displacement reaches 320mm and the chest displacement reaches 178mm.