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

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

Active Publication Date: 2020-06-30
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, friction compensation method and device, equipment and medium
  • Electric power steering system, friction compensation method and device, equipment and medium
  • Electric power steering system, friction compensation method and device, equipment and medium

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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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PUM

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Abstract

The invention provides an electric power-assisted steering system, a friction compensation method and device, equipment and a medium. The friction compensation method of the electric power-assisted steering system comprises the steps: acquiring a booster friction force of a booster and a steering gear friction force of a steering gear which are measured respectively; calculating a total friction force difference value according to the booster friction force and the steering gear friction force; and compensating the boosting torque of the booster according to the total friction force differencevalue. The friction force compensation performance of the electric power steering system is improved, and the steering hand feeling and the whole vehicle driving experience are improved.

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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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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