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Compensation method and vehicle for electric power steering

A technology of electric power steering and compensation method, applied in electric steering mechanism, power steering mechanism, vehicle parts, etc., can solve the problems of increased steering wheel hand force, bad subjective feeling, increased viscosity, etc., to reduce hand force , Eliminate bad feelings, good embedding effect

Active Publication Date: 2022-04-08
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the ambient temperature is very low, the lubricating grease in the universal joint between the steering column intermediate shaft and the EPS will solidify, and the viscosity will increase, resulting in increased resistance when the steering wheel is turned, which in turn will increase the hand force on the steering wheel. Large, resulting in a bad subjective feeling that the steering wheel is too heavy

Method used

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  • Compensation method and vehicle for electric power steering
  • Compensation method and vehicle for electric power steering
  • Compensation method and vehicle for electric power steering

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Effect test

Embodiment 1

[0041] Such as Figure 1-Figure 2 As shown, this embodiment provides a compensation method for electric power steering, including the following steps:

[0042] S110. Determine the basic power assist current through the basic power assist module according to the steering wheel torque value collected by the steering wheel torque sensor in real time and the vehicle speed value sent by the vehicle CAN network.

[0043] Among them, the basic power assist module receives the steering wheel torque value collected in real time by the steering wheel torque sensor and the vehicle speed value sent by the vehicle CAN network, and determines the basic power assist current through calculation.

[0044] S120. Determine the centering control current through the centering control module according to the steering wheel angle value collected by the steering wheel angle sensor in real time and the vehicle speed value sent by the vehicle CAN network.

[0045] Among them, the centering control mod...

Embodiment 2

[0055] On the basis of the above embodiments, the embodiment of the present invention further optimizes the compensation method of the electric power steering, such as image 3 and Figure 4 As shown, the optimized electric power steering compensation method according to the embodiment of the present invention mainly includes the following steps:

[0056] S210. Determine the basic power assist current through the basic power assist module according to the steering wheel torque value collected in real time by the steering wheel torque sensor and the vehicle speed value sent by the vehicle CAN network.

[0057] Among them, the basic power assist module receives the steering wheel torque value collected in real time by the steering wheel torque sensor and the vehicle speed value sent by the vehicle CAN network, and determines the basic power assist current through calculation.

[0058] S220. Determine the centering control current through the centering control module according t...

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Abstract

The invention belongs to the technical field of electric power steering, and discloses a compensation method for electric power steering and a vehicle, wherein the compensation method for electric power steering includes the cockpit temperature value sent by the temperature compensation module according to the vehicle CAN network, the power system The temperature value of the cooling water determines the temperature compensation current, and the vehicle adopts the compensation method of the electric power steering mentioned above. The present invention utilizes the existing cockpit temperature value on the vehicle and the cooling water temperature value signal of the power system to estimate the temperature value at the universal joint of the steering column intermediate shaft without adding additional parts such as sensors and without increasing the hardware cost of the EPS , simply and efficiently realize the increase of the power assist value of the EPS motor in a low temperature environment, thereby reducing the hand force of the steering wheel and eliminating the bad feeling of the steering wheel being too heavy to the greatest extent. In addition, the temperature compensation module of the present invention is an independently added control Module, no need to modify other existing control modules, good embedding.

Description

technical field [0001] The invention relates to the technical field of electric power steering, in particular to a compensation method for electric power steering and a vehicle. Background technique [0002] With the development of intelligent and networked automobiles, more and more vehicles are equipped with electric power steering (EPS). When the ambient temperature is very low, the lubricating grease in the universal joint between the steering column intermediate shaft and the EPS will solidify, and the viscosity will increase, resulting in increased resistance when the steering wheel is turned, which in turn will increase the hand force on the steering wheel. Large, resulting in a bad subjective feeling that the steering wheel is too heavy. Contents of the invention [0003] The purpose of the present invention is to provide a compensation method for electric power steering and a vehicle, which can increase the power assist value of the EPS motor in a low-temperature...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04
CPCB62D5/046B62D5/0463
Inventor 郭笑通李论孙微高明松
Owner CHINA FIRST AUTOMOBILE
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