Electric power steering control method, device, device and storage medium

Abstract

The invention discloses an electric power steering control method, device, equipment and storage medium. The method obtains the sensor signal of the CAN bus of the controller local area network, the motor speed signal of the motor and the limit position signal under the current working condition; according to The limit position signal and the sensor signal determine whether to activate the corner speed limit function; when the corner speed limit function is determined to be activated, the motor limit current is obtained by combining the preset speed limit algorithm and the preset corner limit algorithm, and the assist torque is reduced according to the motor limit current, so as to Realize the power steering control, which can ensure that the steering wheel tends to the limit position. By limiting the rotation speed of the corner, the limited power assist current is generated in time, and the soft stop active collision suppression function can be realized. According to the speed of the driver turning the steering wheel close to the limit position, As well as the difference in the associated vehicle speed, it can adapt to a variety of operating conditions and better meet the actual needs of the vehicle.

Description

technical field [0001] The present invention relates to the technical field of vehicle steering, in particular to an electric power steering control method, device, equipment and storage medium. Background technique [0002] At present, in the steering technology of vehicles, the commonly used electric power steering system (Electronic PowerSteering, EPS) generates power by controlling the output current of the motor to assist the driver in steering operations; When the steering wheel is close to the limit position, the power assist provided by the EPS system is limited by reducing the motor current, reducing the impact sound of the steering system and the sudden change in the driver's hand force, improving the torque impact on the steering transmission link, and improving the use of the steering system. While improving the lifespan, the driver's driving experience is improved. [0003] However, it is difficult to identify the difference between the limit current when the d...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide an electric power steering control method, device, equipment and storage medium, aiming to solve the problem of reducing the power by calculating the magnitude of the limited current by identifying the degree of the steering wheel approaching the limit position in the prior art. Technical issues to meet the functional requirements of vehicles in various operating conditions or scenarios

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