Aligning control method and device for electric power-assisted steering device

An electric power steering and positive control technology, which is applied to electric steering mechanisms and other directions, can solve the problems of reducing steering wheel alignment performance, insufficient steering wheel alignment, and overshooting of alignment.

Active Publication Date: 2019-06-21
SOUTH CHINA UNIV OF TECH
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When a vehicle equipped with an electric power steering device is turned, the friction force increases due to the existence of the power-assisted motor and the worm gear reducer, wh

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aligning control method and device for electric power-assisted steering device
  • Aligning control method and device for electric power-assisted steering device
  • Aligning control method and device for electric power-assisted steering device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail with reference to the accompanying drawings and examples.

[0064] Such as figure 1 Said, a centering control device of an electric power steering device, comprising:

[0065] The road load estimation module is used to calculate the road resistance moment T when the car turns l and the actual steering work W provided by the electric power steering device s ;

[0066] The driver's intention recognition module detects the steering angle and steering torque on the steering column, and recognizes the driver's intention according to the steering angle and steering torque on the steering column, and judges whether to enter the centering control;

[0067] Correction coefficient determination module, used to determine the vehicle speed correlation coefficient C of the positive control according to the vehicle ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an aligning control method and an aligning control device for an electric power-assisted steering device. The method comprises the following steps: establishing a mathematicalmodel of the electric power-assisted steering device; testing the steering work under different road resistance through a bench test, tabling results, and storing a table in an electronic control unit; determining to enter an aligning control condition; estimating the driving road surface resistance torque of a vehicle; calculating the energy required to be provided by a power-assisting motor whenthe steering wheel of the vehicle is to be aligned according to the road surface resistance moment, and calculating to obtain the assistant aligning torque required to be provided by the power-assisting motor; finally, obtaining a vehicle speed related coefficient and a steering wheel related coefficient to modify the assistant aligning torque according to vehicle speed information and aligning torque information. According to the aligning control method and the aligning control device for the electric power-assisted steering device, the aligning performance of the electric power-assisted steering device is improved on the premise of not influencing the operating hand feel of a driver and not increasing the required sensors.

Description

technical field [0001] The invention relates to the technical field of designing an electric power steering system, and in particular relates to a method and device for returning to a centering control of an electric power steering system for a vehicle. Background technique [0002] The electric power steering system (EPS) of a vehicle usually consists of a torque sensor, a vehicle speed sensor, an electronic control unit (ECU), a booster motor, a worm gear reducer, and a rack and pinion steering gear. The working principle of the electric power steering system is to detect the steering wheel angle and the steering torque acting on the steering wheel through the angle sensor and torque sensor installed on the steering column. The control algorithm generates corresponding power-assist torque to assist the driver in turning the steering wheel. [0003] When a vehicle equipped with an electric power steering device is turned, the friction force increases due to the existence o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B62D5/04
Inventor 上官文斌严汶均
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap