Fault diagnosis system of automobile steer-by-wire system

A fault diagnosis system and steer-by-wire technology, applied in vehicle components, electrical program control, data exchange through path configuration, etc. Control steering system and other problems, to facilitate after-sales maintenance personnel, reduce the time of diagnosis and judgment, and reduce the effect of strong coupling

Active Publication Date: 2010-11-17
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the above technology, it is possible to read vehicle status information from the CAN bus and read and display fault information, etc., but this technology does not involve the steering-by-wire system, and does not make a layered architecture for embedded software to reduce Description of strong coupling between software, etc.

Method used

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  • Fault diagnosis system of automobile steer-by-wire system
  • Fault diagnosis system of automobile steer-by-wire system
  • Fault diagnosis system of automobile steer-by-wire system

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] figure 1 A layered architecture of a steer-by-wire system is shown. The fault diagnosis layered architecture of the control-by-wire system is mainly composed of the steering-by-wire control module, CAN communication (including CAN network management and CAN application layer), CAN diagnosis communication (including CAN diagnosis transmission layer and CAN diagnosis application layer), fault judgment and detection module and Hardware abstraction layer HAL (Hardware Abstract Layer), low-end driver (Low Level Drive Layer / InputOutput Driver referred to as I / O driver in this article) and operating system.

[0020] The invention proposes a layered architecture of embedded software, which is beneficial to reduce the strong coupling between software, facilitates testing and debugging, and reduces the time and cost of program development. The invention diagnoses the fa...

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Abstract

The invention discloses a fault diagnosis system of an automobile steer-by-wire system. The fault diagnosis system adopts an embedded type layered structure and comprises a steer-by-wire control module, a CAN communication, a CAN diagnosis communication, a hardware abstraction layer, a fault judging and detecting module, an I / O drive and an operating system, wherein the steer-by-wire control module receives signals from the CAN communication and the CAN diagnosis communication, corresponding output signals are given by the treatment of a control strategy and the signals are transmitted to thehardware by the CAN communication and the CAN diagnosis communication. The embedded type stratified structure proposed is beneficial to reducing the close coupling among software and conducting test and debugging and reduces development time and cost.

Description

technical field [0001] The invention belongs to the field of automobiles, in particular to embedded software design and on-vehicle diagnosis of an automobile steer-by-wire system. Background technique [0002] The safety of the car is one of the main indicators of the car's performance, so the software and hardware design of the car's on-board controller is increasingly integrated into the fault diagnosis technology of the car. At present, the on-board controller of the car mainly reads out the faults stored in the on-board controller through the method of on-board diagnostic communication. On-board diagnostic communication is mainly transmitted in real time through the on-board CAN network. Because the CAN vehicle network has the characteristics of high communication rate and strong real-time reliability, the current international diagnostic communication has been converted from the early K-line diagnosis to CAN diagnosis. CAN communication is the hardware basis for the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R16/02H04L12/28G05B19/02
Inventor 李娟娟
Owner CHERY AUTOMOBILE CO LTD
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