Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A sliding mode observer real-time modeling method for fault diagnosis of an electric power steering system

An electric power steering and sliding mode observer technology, which is applied in the fields of instruments, electric digital data processing, special data processing applications, etc., can solve the problems affecting the accuracy of fault diagnosis and the accuracy of sliding mode fault algorithms.

Pending Publication Date: 2019-06-14
JIANGSU UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Among them: Q is the interference distribution matrix, and ξ is the interference vector existing in the system. As a very important part of the system model, it is estimated through experience in many cases. It is inevitable that there will be inaccuracies that will affect the sliding mode The accuracy of the fault algorithm affects the accuracy of fault diagnosis

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
  • A sliding mode observer real-time modeling method for fault diagnosis of an electric power steering system
  • A sliding mode observer real-time modeling method for fault diagnosis of an electric power steering system
  • A sliding mode observer real-time modeling method for fault diagnosis of an electric power steering system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] The present invention will be further described below in conjunction with the drawings.

[0064] The present invention is a real-time modeling method for fault diagnosis of electric power steering system. The electric disturbance of the system is calculated by the torque sensor installed in the electric power steering system, and the steering wheel angle sensor is calculated by the steering wheel angle sensor installed in the system. The resistance torque is used to calculate the mechanical disturbance in the system, and the value of the interference vector is obtained through the value measured by the installed sensor, so as to complete the fault diagnosis of the electric power steering system with strong interference. For cars with harsh working environments, this fault diagnosis method has strong practicability and effectiveness.

[0065] To construct a sliding mode observer, unlike the interference vector of a general sliding mode observer, the interference vector in the...

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 relates to a sliding mode observer real-time modeling method for fault diagnosis of an electric power steering system. The method is used for fault diagnosis of the electric power steering system with interference. A sliding mode fault diagnosis method is applied to a power-assisted steering system with interference; meanwhile, aiming at the defect that disturbance existing in a common sliding mode fault algorithm is obtained through the algorithm or experience estimation, the innovation of an electric power steering system device is provided, so that the detection of interference existing in the system is realized, the interference vector is obtained, a more accurate interference distribution matrix can be obtained according to the interference vector, and the accuracy of afault algorithm is improved. According to the present invention, the disturbance existing in the system is measured in real time by using the torque sensor and the angle sensor, and the real-time interference distribution matrix is derived, so that the fault diagnosis and reconstruction of the electric power steering system with the disturbance are ensured. According to the method, the fault diagnosis correctness and the accuracy of the electric power system with interference and disturbance are ensured.

Description

Technical field [0001] The present invention relates to an electric power steering system in the field of automotive electronics, in particular to a sliding mode observer real-time modeling method for fault diagnosis of an electric power steering system. The fault diagnosis method measures the interference in the system in real time, and then By constructing a dynamic model, the purpose of constructing a sliding mode observer is realized, so as to realize the accurate fault diagnosis and fault reconstruction of the electric power steering system with interference. Background technique [0002] At present, the electric power steering system is an important part of the automobile electronic system, and it is more and more widely used in automobiles. When the electric power steering system fails, it has an extremely serious impact on driving safety. Its failure will cause the driver to turn difficult, and if it is serious, it will also cause the steering wheel to lose control, resul...

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): G06F17/50
CPCY02T90/00
Inventor 罗石汤晓东范中心
Owner JIANGSU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com