电子与封装2025，Vol.25Issue(4)：77-83,7.DOI:10.16257/j.cnki.1681-1070.2025.0045
一款汽车电子用MCU失效分析与对策
Failure Analysis and Countermeasures of an MCU for Automotive Electronics
王彬 1赵志林 1郭晶1
作者信息
- 1. 智能汽车安全技术全国重点实验室,江苏无锡 214072||中科芯集成电路有限公司,江苏无锡 214072
- 折叠
摘要
Abstract
During the operation of a vehicle-mounted electric tailgate system,the electromagnetic radiation generated by the cable when the DC motor of the controller moves interferes with the clock path of the MCU chip,further causing a Hardfault bus error in the core,resulting in operational failure and inability of the tailgate to reach the designated position.A fault tree was established based on the Hardfault anomaly of the MCU core as the top-level event for failure analysis.The interference source was successfully located as the DC motor cable,the interference propagation path was spatial radiation,and the interference object was the MCU clock path.The correctness of the analysis results was verified through fault scenario reproduction.Finally,rectification methods were proposed from both software and hardware perspectives,which have certain reference value for MCU failure analysis and prevention in motor motion control systems.关键词
MCU/Hardfault/电磁辐射/故障树分析/直流电机Key words
MCU/Hardfault/electromagnetic radiation/fault tree analysis/DC motor分类
电子信息工程引用本文复制引用
王彬,赵志林,郭晶..一款汽车电子用MCU失效分析与对策[J].电子与封装,2025,25(4):77-83,7.
