Electric power steering system, vehicle, and control method of electric power steering system

A technology of electric power steering and power-assisted motor, which is applied in the direction of automatic steering control components, electric steering mechanism, power steering mechanism, etc. It can solve the problems of random hardware failure and systematic failure, and achieve shortened cycle, reduce manpower and time cost , to achieve the effect of rapid iterative development

Active Publication Date: 2022-03-25
CHINA FIRST AUTOMOBILE
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since EPS electronic control devices will inevitably face systemic failures and random hardware failures during their service life cycle, the entire vehicle will face some unacceptable risks

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
  • Electric power steering system, vehicle, and control method of electric power steering system
  • Electric power steering system, vehicle, and control method of electric power steering system
  • Electric power steering system, vehicle, and control method of electric power steering system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] figure 1 It is a schematic structural diagram of an electric power steering system provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of realizing rapid iterative development of an electric power steering control system based on an SOA architecture. The specific structure of the electric power steering system 1 includes as follows:

[0036] The electric power steering system 1 includes an EPS state machine 10, wherein the EPS state machine 10 includes at least one SOA server, and the SOA server is configured such that the EPS state machine 10 provides Provide at least one of the following services; the EPS state machine 10 includes:

[0037] Torque sensor signal service 11, which is configured to provide steering wheel angle and torque parameters required by the electric power steering system 1;

[0038] Speed-dependent power assist service 12, which is configured to provide the electric power steering system 1 with retur...

Embodiment 2

[0071] figure 2 A schematic structural diagram of a vehicle provided by Embodiment 2 of the present invention, the vehicle includes an electric power steering system provided by the embodiment of the present invention, and the vehicle has corresponding functional modules and beneficial effects of the electric power steering system.

[0072] The vehicle provided by the embodiment of the present invention includes an electric power steering system, the EPS state machine includes at least one SOA server, and the SOA server is configured such that the EPS state machine provides the electric power steering system with at least one of the following services; The EPS state machine includes: torque sensor signal service, which is configured to provide the steering wheel angle and torque parameters required by the electric power steering system; The return-to-alignment assist parameters that vary with the speed of the vehicle; the return-to-alignment assist service, which is configure...

Embodiment 3

[0074] image 3 It is a schematic flowchart of a control method for an electric power steering system provided by Embodiment 3 of the present invention. This embodiment is applicable to the situation of realizing rapid iterative development of an electric power steering control system based on an SOA architecture. The control method of the electric power steering system is applied to the electric power steering system provided in this embodiment, and the control method of the electric power steering system specifically includes the following steps:

[0075] S310. Obtain the steering wheel angle and torque parameters required by the electric power steering system, as well as the centering assist parameters that vary with the vehicle speed and the centering torque parameters generated by driving the steering wheel through the steering column drive shaft.

[0076] S320. Determine, according to the steering wheel angle and torque parameters, the return assist parameters, and the ret...

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 embodiment of the invention discloses an electric power steering system, a vehicle and a control method of the electric power steering system. The electric power steering system comprises an EPS state machine, the EPS state machine comprises at least one SOA server, and the SOA server is configured to enable the EPS state machine to provide at least one of the following services for the electric power steering system; the EPS state machine includes: a torque sensor signal service configured to provide steering wheel angle and torque parameters; a speed-dependent assistance service configured to provide a return assistance parameter that varies with a vehicle speed; the aligning assistance service is configured to provide an aligning torque parameter generated by driving a steering wheel through a steering column transmission shaft; and the power-assisted control service is configured to provide a power-assisted motor control signal for controlling the power-assisted motor to output the aligning torque parameter. The rapid iteration development of the power-assisted steering function of the vehicle is realized, the development period of the vehicle function is shortened, and the manpower and time cost is effectively reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of vehicle control, and in particular to an electric power steering system, a vehicle and a control method for the electric power steering system. Background technique [0002] Electric Power Steering (EPS) is a power steering system that relies on the motor to provide auxiliary torque. The EPS electronic control system is mainly composed of motors, controllers, torque sensors, steering wheel angle sensors and other components. Since EPS electronic control devices will inevitably face systematic failure and random hardware failure during their service life cycle, the whole vehicle will face some unacceptable risks. With the implementation of GB17675-2021, vehicle manufacturers are facing the challenge of turning to functional safety development. How to realize functional safety in EPS system development and effectively shorten the development cycle and cost is a technical problem. Con...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D6/00B62D101/00B62D119/00B62D113/00
CPCB62D5/0463B62D5/0466B62D6/00
Inventor 梁瑜杨雪珠李海霞李军孙毓阳田井权
Owner CHINA FIRST AUTOMOBILE
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