空气悬架的功能安全分析

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中图分类号：U469.7 文献标志码：A DOI：10.19822/j.cnki.1671-6329.20240216

【欢迎引用】.空气悬架的功能安全分析[J].汽车文摘，2025（5）：16-26.

【Citeths paperXIANGYLIUYH，ZHANGLFunctionalSafetyAnalysisofAir Suspension]AutomotiveDigest（Chinese）2025（5）：16-26.

Functional Safety Analysis of Air Suspension

【Abstract】 Inorder to enhance thesafetyofvehiclesequipped with air suspensionand topreventinjuries toroad users caused byair suspension failures during operation， afunctional safety analysis of theair suspension systemis conduced.BasedontheISO26262functionalsafetystandard，relevantitemsofthe airsuspensionsystemaredefinedand ahazard analysisandrisk assessmentmethodareusedtoderive thefunctionalsafetyobjectives fortheair suspension. These functional safety objectives are then decomposed step by step to the subsystemand hardware/software levels， establishingacompletesafetyarchitectureCombining thevehiclerolovertheoreticalmodel，theriskofvehiclerolloveris analyzed，along withtheimpactofair suspensionheightadjustmentontherollmomentarmandlateralloadtransferrate.A gradedresponsemechanismisproposed：if the suspensionfailsbutthereis norollverrisk，analarmistriggredand continuousmonitoringismaintained；ifthereisaroloverrisk，theheightadjustmentfunctionisforciblystoppedtoensure the systementers asafestate.Thedesignedstrategyeffectivelybalancesfunctionalsafety withsystem availabilityensuring the functional safety of the air suspension and the overall stability of the vehicle.

Key words： Air suspension， Functional safety， Lateral stability， Hazard analysis and risk assessment

0引言

空气悬架作为一种先进的悬架系统，能够通过主动调节悬架高度与阻尼特性，显著提升车辆的行驶平顺性和操纵稳定性，因此被广泛应用于中高端乘用车型。（剩余9912字）