Electric power steering system and friction compensation method, device, equipment, medium

A power assist system and electric steering technology, applied in electric steering mechanism, automatic steering control components, steering rods, etc., can solve problems such as inability to compensate, and achieve the effect of improving friction compensation performance, steering feel and vehicle driving experience.

Active Publication Date: 2021-10-08
NEXTEER AUTOMOTIVE SYST SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, the existing steering system friction learning function can only compensate for the friction difference between the steering gear or the booster, but cannot compensate for both.

Method used

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  • Electric power steering system and friction compensation method, device, equipment, medium
  • Electric power steering system and friction compensation method, device, equipment, medium
  • Electric power steering system and friction compensation method, device, equipment, medium

Examples

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Embodiment Construction

[0060]Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0061] Furthermore, the drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemen...

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Abstract

The present invention provides an electric power steering assist system and a friction compensation method, device, equipment and medium. The friction compensation method of the electric power steering assist system includes: acquiring the respectively measured booster friction force of the booster and steering of the steering gear. Calculate the total friction force difference value according to the booster friction force and the steering gear friction force; and compensate the assist torque of the booster according to the total friction force difference value. The invention improves the friction compensation performance of the electric power steering system, and improves the steering feel and the driving experience of the whole vehicle.

Description

technical field [0001] The invention relates to an electric power steering system, in particular to an electric power steering system and a friction compensation method, device, equipment and medium. Background technique [0002] "Steering Friction Learning" is an advanced function of the electric power steering system. It mainly has two functions: 1) It is used to compensate the friction difference between parts caused by manufacturing tolerances when the steering gear and booster are off the production line, so that each new car is consistent when it goes off the production line 2) It is used to compensate the overall friction change of the electric power steering system caused by wear, rust, temperature, etc., so that the vehicle provides consistent power throughout the life cycle The steering feel is maintained. [0003] Existing steering system friction learning functions use only one steering system level friction difference compensation parameter. In other words, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04B62D6/00G01L5/00B62D137/00
CPCB62D5/04B62D6/00G01L5/00
Inventor 徐新福张宰弼
Owner NEXTEER AUTOMOTIVE SYST SUZHOU
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