A car adaptive collision energy absorption system

Abstract

The invention discloses a self-adaptive collision energy absorption system of an automobile. The system is characterized by comprising a bumper cross beam, a universal ball joint, a self-adaptive energy absorber, an automobile longitudinal beam and a connecting plate, wherein the automobile longitudinal beam adopts a hollow structure, a casing of the self-adaptive energy absorber is arranged inside and fixed in a hollow cavity of the automobile longitudinal beam, a front-end piston rod of the self-adaptive energy absorber is in threaded connection of a ball of the universal ball joint, the connecting plate in the universal ball joint is fixedly connected on the bumper cross beam, and the universal ball joint keeps the piston rod of the self-adaptive energy absorber to move axially. Output signals are adjusted according to collision state information fed back by the self-adaptive energy absorber to control damping force of the self-adaptive energy absorber, and real-time self-adaptive adjustment of the damping force of the self-adaptive energy absorber is realized according to the magnitude of collision force.

Description

technical field [0001] The invention relates to the field of collision energy absorption, in particular to an adaptive energy absorption system that can be used for impact buffering applications such as the collision of carrying equipment and the emergency landing of aerospace vehicles. Background technique [0002] Collision accidents of carrying equipment may cause casualties and huge economic losses. It is of great social significance and engineering value to study the impact energy absorption during the collision process of carrying equipment. Taking an automobile as an example, in the prior art, the energy-absorbing box provided on the longitudinal beam of the automobile collapses and absorbs energy during the collision of the automobile, and is one of the important components for energy absorption of the automobile collision. However, when the collapse of the energy-absorbing box reaches the limit position, the energy-absorbing effect will fail. Most of the current au...

AI Technical Summary

Problems solved by technology

However, the general magneto-rheological energy absorber cannot provide the corresponding damping force in time when the system fails and the power is cut off, which may cause serious accidents, and when the car collides with pedestrians or small-mass and low-speed moving The force is small, and the passive damping of the magneto-rheological energy absorber is large, which may cause damage to the hit object

In the field of automobile crash energy absorption systems, the related technologies of magneto-rheological energy absorbers have not been effectively applied so far

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