Initiative anticollision self-adapting fuzzy control method for vehicle

Abstract

The invention relates to an initiative anticollision self-adapting fuzzy control method for a vehicle. The method comprises the following steps: measuring the relative speed of a self vehicle and a front vehicle and the speed of the self vehicle respectively by a radar speed measurement sensor and a hall vehicle speed sensor on the self vehicle; according to the situations of weather, road surfaces, vehicle types and loads and manual input information, obtaining the largest braking deceleration that the self vehicle and the front vehicle possibly achieve, and at the same time, according to a distance between the two vehicles, dividing the control behavior of the self vehicle into four grades; and comparing the actual distance D between the two vehicles, measured by a radar distance measurement sensor, with a safe vehicle following distance, a warning distance, a fuzzy control automatic brake distance and an emergency braking distance, and determining which section the actual distance between the vehicles falls into, so as to make a corresponding action. According to the method disclosed by the invention, a control system can be adjusted in a self-adapting manner without changing a fuzzy control rule list and a fuzzy control algorithm list, so that the control system can be adaptive to the changes of the situations of individual types of drivers, the weather, the road surfaces, the vehicle types, the loads and the like, and the stability, the reliability and the robustness of automatic brake are maintained.

Description

technical field [0001] The invention belongs to the technical field of automobiles and relates to an automatic control method for automobiles, in particular to an adaptive fuzzy control method for active collision avoidance technology of automobiles. Background technique [0002] Automobile anti-collision systems can not only reduce traffic accidents and casualties, but also are closely related to the future development of automobiles. Car driving in the future will definitely become simple and convenient until fully autonomous driving is realized. The prerequisite and important guarantee for the realization of automatic driving is a reliable collision avoidance system. Automobile anti-collision systems are mainly divided into passive anti-collision and active anti-collision. The former is an alarm device, reminding and mainly relying on the driver to control and brake the vehicle; If the driver fails to brake in time, the automatic control system will activate the automat...

AI Technical Summary

Problems solved by technology

At present, when the fuzzy control algorithm table is used for look-up control, the main problem is that the control is quite rough due to the limited level and the configuration of the internal parameters of the controller cannot be changed with the control situation.

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