116内蒙古工业大学学报（自然科学版）2023年第42卷第2期2023年4月内蒙古工业大学学报（自然科学版）JournalofInnerMongoliaUniversityofTechnology（NaturalScienceEdition）Vol.42No.2Apr.2023文章编号：1001-5167（2023）02-0116-07基于多传感器加速度测量的轨道不平顺估计研究李长坤1,2，何浩1,2，郭翔鹰1,2（1.北京工业大学材料与制造学部，北京100124；2.非线性振动与机械结构强度北京市重点实验室，北京100124）Estimationoftrackirregularitybasedonmulti-sensoraccelerationmeasurementLIChangkun1,2,HEHao1,2,GUOXiangying1,2收稿日期：2022-11-30基金项目：国家自然科学基金项目（11772010，11832002）；天津市自然科学基金重点项目（19JCZDJC32300）第一作者：李长坤（1997—），男，2020级硕士研究生，主要从事铁路轨道故障研究。E-mail:lichangkun0224@163.com通信作者：郭翔鹰（1982—），女，博士，教授，主要从事非线性动力学研究。E-mail:eagle2008guo@yeah.net(1.BeijingUniversityofTechnology,FacultyofMaterialsandManufacturing,Beijing100124,China;2.BeijingKeyLaboratoryofNonlinearVibrationsandStrengthofMechanicalStructures,Beijing100124,China)Abstract：Trackirregularityisthemainsourceofthevibrationofthevehiclesystem,whichwillcausepotentialriskstothesafetyandstabilityofthevehicletracksystem.Duetothedifficultiestodetectdifferentirregularitiesofdifferentbandswithasinglesensor,atrackirregularityestimationmethodbasedonbogieattitudecalculationandunknowninputobserverestimatorwasproposed.Theverticalandlateraltrackirregularitieswereidentifiedbymeasuringthedynamicresponsesofvehiclesandbogieswithdistributedmulti-sensors.Firstly,themotioncharacteristicsofthebogiepositionandattitudeandtheaccuracyoftrackirregularityidentificationunderdifferentworkingconditionswereanalyzed.Accordingtothecorrelationofoutoflimitposition,itcanbefoundnthattrackirregularityidentificationmethodcanaccuratelydetectoutoflimitpositionoftrack.Atthesametime,theexperimentaltestiscarriedoutundertheactionofthemeasuredtrackirregularityexcitation,andthecomparisonwiththecomprehensivedetectionofthetraintrackirregularitymeasurementresultsshowsthatthemethodhasagoodaccura...
