Intelligent early warning method of crosswind impact based on electric steering device

Abstract

The invention provides an intelligent crosswind influence early-warning method based on an electric steering device. The intelligent crosswind influence early-warning method based on the electric steering device sequentially comprises the following steps that 1, an EPS system collects and writes in parameters comprising steering wheel moment, motor torque, a vehicle speed and a steering angle under the breezeless condition; 2, an EPS system early warning curved surface with steering resistance moment, the vehicle speed and the steering angle as three-dimensional coordinates is obtained, and the EPS system early warning curved surface is written into system debugging software in the later stage of development of the EPS system, wherein the steering resistance moment is equal to the sum of the steering wheel moment and the motor torque; 3, when a vehicle runs linearly at a high speed, signals of the parameter information comprising the steering wheel moment, the motor torque, a motor current, a vehicle speed and a steering angle are comprehensively processed, whether corresponding potential dangers that the vehicle is out of control, sideslips and rolls over will occur or not in a whole vehicle running environment is judged, corresponding coping actions are conducted, and intelligent early warning of the running state of the vehicle is conducted. By the adoption of the intelligent crosswind influence early-warning method based on an electric steering device, a driver can clearly judge the degree of the influence of crosswind on the stability of high-speed linear running of the vehicle and pay attention to the working conditions and the environment of the vehicle, and therefore active safety is improved.

Description

technical field [0001] The invention relates to automobile safety early warning, in particular to an intelligent early warning method for crosswind influence of an electric power steering system. Background technique [0002] The influence of crosswind on the stability of a car running straight at high speed is very obvious. When the whole vehicle is affected by the thrust of the side wind, the steering wheel seems to be pulled by a force. In severe cases, it will deviate from the lane, which may lead to loss of control, sideslip or rollover accidents, which has become a major potential factor for driving safety. When there is no steering force input from the steering wheel, the vehicle with the front engine is affected by the side wind when driving, and will be subjected to side thrust to produce a steering deviation in the direction of the opposite side wind, such as figure 1 As shown in , the car with the rear engine is affected by the crosswind when driving, and will be...

AI Technical Summary

Problems solved by technology

However, the current technology for crosswind impact is mainly to optimize the structure of the vehicle or to intervene with Electronic Stablity Program (ESP, hereinafter collectively referred to as ESP) after the vehicle is out of control, intelligently reducing the probability and risk of crosswind impact , the driver cannot clearly judge the degree of influence of the crosswind on the high-speed straight-line running stability of the car, and artificially ignores the interference of the crosswind on the high-speed straight-line running stability of the car

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