Active pre-braking method for blade electric vehicle

Abstract

The invention provides an active pre-braking method for a blade electric vehicle. The active pre-braking method for the blade electric vehicle includes the steps that firstly, a vehicle control unit receives the distance S between the vehicle and an approaching object in front of the vehicle, wherein the distance S is sent by a distance measuring device; when the distance S between the vehicle and the approaching object in front of the vehicle is smaller than a preset distance limiting value Sd, the relative speed VX of the vehicle and the approaching object in front of the vehicle is worked out according to the sampling time delta t and the distance [[delta]]S between the vehicle and the approaching object in front of the vehicle within the sampling time; and brake torque T provided by a driving motor is further worked out according to S and VX, so that active pre-braking is realized before the vehicle and the approaching object in front of the vehicle collide. The active pre-braking method is particularly suitable for the situations when the vehicle speed or the relative speed is low or when a driver is distracted or is supposed to step on a brake pedal. Pre-braking is conducted by controlling the vehicle actively, the vehicle is effectively prevented from colliding with the approaching object in front of the vehicle, and safety of the vehicle is improved.

Description

technical field [0001] The invention relates to the field of active safety control of automobiles, in particular to an active pre-braking method for pure electric automobiles. Background technique [0002] Traffic accidents not only cause casualties, but also bring economic losses. According to statistics, in various types of vehicle traffic accidents, the head and neck of the human body are the most common injury sites, and this is particularly common in rear-end collisions of automobiles. In rear-end collisions, the proportion of neck injuries is as high as 77.1%, and most rear-end collisions occur at low speeds (less than 25km / h). Therefore, how to reduce or even prevent the occurrence of low-speed rear-end collisions and reduce the rate of rear-end collisions is an important research direction for improving traffic safety. [0003] The current car generally can continuously monitor the state of the vehicle in front through the infrared detection system in the car, and ...

AI Technical Summary

Problems solved by technology

However, due to the introduction of components including infrared detectors, active braking systems, and control chips, this type of device has significantly increased the cost of the entire vehicle, so it is often equipped on luxury models, and its competition is more in the Levels of innovation and technology

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