Fault diagnosis system of automobile steer-by-wire system

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...

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.

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