空氣懸架的功能安全分析

打開(kāi)文本圖片集

中圖分類號(hào)：U469.7 文獻(xiàn)標(biāo)志碼：A DOI：10.19822/j.cnki.1671-6329.20240216

【歡迎引用】.空氣懸架的功能安全分析[J].汽車文摘，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

空氣懸架作為一種先進(jìn)的懸架系統(tǒng)，能夠通過(guò)主動(dòng)調(diào)節(jié)懸架高度與阻尼特性，顯著提升車輛的行駛平順性和操縱穩(wěn)定性，因此被廣泛應(yīng)用于中高端乘用車型。（剩余9912字）