Vehicle steering control method and system and vehicle

Abstract

The invention discloses a vehicle steering control method and system and a vehicle. The method includes steps: acquiring steering angle information, vehicle speed information, lateral acceleration information and front and rear cornering stiffness of the vehicle; judging whether the vehicle is in a preset oversteer state or not according to the steering angle information, the vehicle speed information and the lateral acceleration information; if the vehicle is in the preset oversteer state, acquiring operating current of front and rear side power-assisted motors according to the front and rearcornering stiffness; adjusting front and rear stabilizer bar stiffness adjusting mechanisms according to the operating current by the front and rear side power-assisted motors so as to adjust front and rear cornering stiffness of the vehicle to make a stability factor of the vehicle in a preset factor range. By means of software for extreme position limitation, mechanical impact and noise can beeffectively avoided, development cost is reduced, the degree of understeer in a steering process of the vehicle can be adjusted in real time, and accordingly loss of stability of the vehicle is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a vehicle steering control method, a vehicle steering control system and a vehicle. Background technique [0002] At present, there are two kinds of restrictions on the limit position of the vehicle steering system: one is limited by the steering gear itself, and the other is limited by adding mechanical limit sleeves and limit rings. These two structures are controlled by the vehicle. When turning at a large angle or parking in the garage, it is necessary to quickly turn the steering wheel to the limit position. Frequent left and right limit position operations will generate mechanical shock and noise at the limit position, which will affect the life of parts and operating comfort. At the same time, the limitation through the mechanical structure is unique and cannot be adjusted. If the limit position needs to be adjusted, it is necessary to redevelop the steering gear housing ...

AI Technical Summary

Problems solved by technology

[0002] At present, there are two kinds of limits on the limit position of the vehicle steering system: one is limited by the steering gear itself, and the other is limited by adding mechanical limit sleeves and limit rings. When turning at a large angle or parking in the garage, it is necessary to quickly turn the steering wheel to the limit position. Frequent operations at the left and right limit positions will produce mechanical shock and noise at the limit position, which will affect the life of parts and operating comfort

At the same time, it is limited by the mechanical structure, which is unique and cannot be adjusted. If the limit position needs to be adjusted, it is necessary to redevelop the steering gear housing or redevelop the mechanical limit sleeve and limit ring, resulting in increased cycle time and development costs.

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