Calibration method for center position of electric power steering column

Abstract

The invention discloses a method for calibrating the center position of an electric power steering column, which includes the following steps: S1. Before starting the engine, detect the state of the vehicle, including whether the tire pressure value and the toe-in value of the front wheel meet the requirements, and at the same time check the steering wheel, Whether the steering mechanism and the steering wheels are in the neutral position of the vehicle; S2, if the electric power steering column has not been calibrated to the neutral position or the calibration is not completed, execute S3, and the indicator module continues to flash; S3, the standard neutral position information and Compare the real-time detected electric power steering column median calibration information, if the real-time detected electric power steering column median calibration information does not match the standard median calibration information, perform a median calibration calibration operation; S4, electric power steering column If there is no need to continue the neutral calibration, the indication module prompts that the neutral calibration of the electric power steering column is correct. The working method of the present invention is convenient to operate and easy to use.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a method for calibrating the center position of an electric power steering column. Background technique [0002] For EPS (Electric Power Steering Column) with active centering function, the EPS controller needs to record the middle position of the steering wheel (hereinafter referred to as the median data) before the vehicle leaves the factory, so as to complete functions such as active centering and center position compensation, and improve The stability and reliability of the vehicle steering system. [0003] 1. At present, the steering system mainly ensures that the vehicle has the basic steering return ability through the design of the four-wheel alignment parameters of the whole vehicle. The design requirements are high, and the process effect is not ideal; [0004] 2. The cost of developing four-wheel alignment equipment is high, and the required period is long. Increased...

AI Technical Summary

Problems solved by technology

[0003] 1. At present, the steering system mainly ensures that the vehicle has the basic steering return ability through the design of the four-wheel alignment parameters of the whole vehicle. The design requirements are high, and the process effect is not ideal;

[0004] 2. The cost of developing four-wheel alignment equipment is high, and the required period is long

Increase the cost of vehicle development, while lengthening the vehicle development cycle

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