汽车电子电器故障检测技术分析

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中图分类号：U472.9 收稿日期：2025-05-13 DOI: 10.19999/j.cnki.1004-0226.2025.09.029

Analysis of Automotive Electronic and Electrical Fault Detection Technology

Li WuGeneral Motors （China） Investment Co.,Ltd.,Shanghai 201206,China

Abstract:Thispaperresearchestecorechallngesofdifcultreal-tiedetectionofiddenfultsandinsufcientcouplinganaly sisfmultiplefaultsinutomaielectroicandelectrcalsystemsofneweergyvehicles,inordertoimproethacuracydefciencyoffaultdiagnosisforcomplexelectromechanicalsystems.Aierarchicalfultlocalizationframeworkisproposed，whichintegratesbarcodedetection，reverse inspection，dynamicthresholdpoweranalysis，andmulti-leveldiagnosticmethodsforcomponent breakdown,toachevesystematicientificatiooflectricalparameterabnoralities，mchanicaltresfures，ndsftarelogicdefects.The proposed method performed well in bench testing:the fault response time was shortened to 18ms ，the current detection accuracyreached ±0.2% FS,the ripple recognition rate was increased to 98.5% ，the misjudgment rate was reduced to 5.3% ，and the hidden power fault detection rate was increased by 34.2% .This integrated detection strategy significantly enhances the reliability and safetyof automotiveelectronicandelectricalsystems，providinganeficientandacuratefaultdiagnosissolutionformultidomaincontrlsys tems of new energy vehicles.

Keywords:Automobile inspection; Electronic appliances;Fault detection

1前言

随着汽车电子电气系统复杂度提升，电路故障逐渐成为制约车辆可靠性与安全性的关键因素[1]。（剩余5115字）