Font Size: a A A

Research On Fault Diagnosis Technology Of Commercial Vehicle EPB System

Posted on:2017-04-28Degree:MasterType:Thesis
Country:ChinaCandidate:X D HuangFull Text:PDF
GTID:2132330488462644Subject:Vehicle Engineering
Abstract/Summary:PDF Full Text Request
The emergence of commercial vehicle EPB system will also bring some trouble when it improves the performance of the car. These failures will seriously affect the normal use of the car. In order to improve the reliability and safety of the automobile, the fault diagnosis technology of EPB system must be improved. The research content of this paper is the fault diagnosis technology for commercial vehicle EPB system.After going through related domestic and foreign technology and analyzing systematically the pneumatic EPB, the paper put forward a diagnosis method which is suitable for the commercial vehicle EPB system and establish the fault tree of the commercial vehicle EPB system. The paper analyzes and diagnoses separately from power supply module, signal input module, signal processing module, signal output module of the pneumatic EPB system, and then have a further research of fault treatment. Fault treatment is mainly divided into two parts, one part is the main MCU fault treatment, another part is the main MCU for system fault treatment.The design of EPB electronic control unit based on double MCU is mainly the design of double MCU communication protocol and the design of EPB hardware circuit based on double MCU.Finally, the test bench is set up to simulate the pressure sensor and angle sensor fault. The control effect of EPB based on single MCU and EPB based on double MCU under fault condition is tested. The results show that the EPB based on double MCU can improve the reliability of EPB system.
Keywords/Search Tags:Pneumatic, Fault tree, Fault treatment, Double MCU, Bench test
PDF Full Text Request
Related items