基于几何关系的空气悬架执行器故障诊断与隔离

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DOI：10.16652/j.issn.1004-373x.2025.17.021 引用格式：，，.基于几何关系的空气悬架执行器故障诊断与隔离[J].现代电子技术，2025，48（17）：137-144.

关键词：电控空气悬架；执行器故障；几何关系；故障诊断；故障隔离；AMESim-Simulink联合仿真中图分类号：TN830.1-34；TP273 文献标识码：A 文章编号：1004-373X（2025）17-0137-08

Air suspension actuator fault diagnosis and isolation based on geometric relationships

ZHANG Liping，SUN Tao， ZHU Yongbo （SchoolofAutomobileand TraficEngineering，Liaoning UniversityofTechnology，Jinzhoul21ool，China）

Abstract：Afaultdiagnosisandisolationmethodbasedongeometricrelationships isproposed.Itaimstofindoutthefault locationofthevehicle'selectronicallycontrolledairsuspensionactuatormorequicklywhenitfailsandtodiagnoseandisolate thefaults.Theactuatorstuckfaultandconstantgainfaultaredesigned.Twosetsoffaultdiagnosisindexesaredesignedbased ongeometricrelationship.Thefaultdiagnosisandisolationofthefaultyactuatorarecarryoutaccording totherelatioship betweenthefaultdiagnosisindexesandthethresholdvalue.TheAMESimisusedtobuildthephysicalmodelofelectronially controlldairsuspensionsystem with vehicle speedandroad excitationasinputs，and Simulinkisused tobuildthePID/PWM bodyheightcontrolermodel，thefaultmodel，andthefaultdiagnosticmodelwiththechangeofbodyheightoutputfromthe sensorsasinputs.Finally，theyareverifidbytheAMESim-Simulinkjointsimulation.Fromthesimulationresults，itcabe concludedthatthefaultdiagnosisandisolationmethodbasedongeometricalrelationshipcandiagnosethefaultyactuator efectivelyandisolatethefaultyactuatoracurately.TheAMESimisutilizedtobuildelectronicallycontrolledairsuspension， whichavoidscomplicatedmathematical formula derivationanddescribesthewholesystemmoreacurately.Theproposed fault diagnosisandisolationmethodbasedongeometricrelationshiphavesimpledesignandcandiagnoseandisolatethelocationof faulty actuators quickly.

Keywords：electronicallcontroledairsuspension;actuatorfailure;geometricrelationship;faultdiagnosis;faultisolation; AMESim-Simulink joint simulation

0 引言

近年来，随着电子技术在汽车悬架领域的发展，传统悬架难以满足复杂工况下性能优化的需求，影响车辆的平顺性和驾驶员的乘坐舒适性。（剩余6344字）