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Electric hydraulic power-assisted steering system failure diagnosing method and controller

A technology for hydraulic power steering and system failures, which is applied to electric steering mechanisms, fluid steering mechanisms, etc., and can solve problems such as inability to self-diagnose failures and achieve the effect of self-diagnosis of failures

Active Publication Date: 2015-05-13
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a fault diagnosis method and controller of an electro-hydraulic power steering system to solve the technical problem that the electro-hydraulic power steering system cannot self-diagnose its own faults in the prior art

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  • Electric hydraulic power-assisted steering system failure diagnosing method and controller
  • Electric hydraulic power-assisted steering system failure diagnosing method and controller
  • Electric hydraulic power-assisted steering system failure diagnosing method and controller

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Embodiment Construction

[0062] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0063] It should be noted that the technical solution of the present invention can realize real-time monitoring of the operation of the electro-hydraulic power steering system or real-time analysis of data when the electro-hydraulic power steering system is operating normally. , the faults that occur can be diagnosed through the collected working...

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Abstract

The invention discloses an electric hydraulic power-assisted steering system failure diagnosing method and a controller. The method comprises the following steps of receiving working parameters of an electric hydraulic power-assisted steering system, which are acquired at the moment, wherein the working parameters comprise voltage and current of the two ends of a motor, the opening degree of a hydraulic oil distributing valve, a management signal of a high-pressure management unit, the oil amount of an oil storage tank, oil pressure between an electric hydraulic power-assisted steering oil pump and the hydraulic oil distributing valve, and hydraulic oil flow rate between the hydraulic oil distributing valve and a steering executing unit; and analyzing the type of a failure of a part of an electric hydraulic power-assisted steering system according to the working parameters. Which part fails is determined by analyzing the received working parameters, so that an automatic failure diagnosing function of the electric hydraulic power-assisted steering system is realized.

Description

technical field [0001] The invention relates to automatic control technology, in particular to a fault diagnosis method and controller of an electrohydraulic power steering system. Background technique [0002] refer to figure 1 Shown is a schematic diagram of the structure of the electro-hydraulic power steering system in a car. The electro-hydraulic power steering system generally includes an oil storage tank, an electric power steering oil pump, a hydraulic oil distribution valve, a steering execution unit, a hydraulic oil pipeline, and a high-voltage distribution box , wherein the electric power steering oil pump includes a motor and a hydraulic power pump. [0003] The working principle of the electro-hydraulic power steering system is: when the vehicle is switched from non-electric mode to electric mode, the vehicle controller sends a control signal to the high-voltage management unit in the high-voltage distribution box, and the high-voltage management unit controls ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/06B62D5/04
Inventor 韩尔樑赵强潘凤文李会收刘焕东
Owner WEICHAI POWER CO LTD
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