Experimental investigation on vibration characteristics of the medium-low-speed maglev vehicle-turnout coupled system  

作　　者：Miao Li Dinggang Gao Tie Li Shihui Luo Weihua Ma Xiaohao Chen 

机构地区：[1]State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China [2]Maglev Transportation Engineering R&D Center,Tongji University,Shanghai 201804,China [3]City Rail Technical Development Department,CRRC Dalian Locomotive and Rolling Stock Co.,Ltd,Dalian 116022,China

出　　处：《Railway Engineering Science》2022年第2期242-261,共20页铁道工程科学（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.51875483);the Independently Funded Research Project of State Key Laboratory of Traction Power(Grant Nos.2020TPL-T01 and 2020TPL-T04).

摘　　要：The steel turnout is one of the key components in the medium–low-speed maglev line system.However,the vehicle under active control is prone to vehicle–turnout coupled vibration,and thus,it is necessary to identify the vibration characteristics of this coupled system through field tests.To this end,dynamic performance tests were conducted on a vehicle–turnout coupled system in a medium–low-speed maglev test line.Firstly,the dynamic response data of the coupled system under various operating conditions were obtained.Then,the natural vibration characteristics of the turnout were analysed using the free attenuation method and the finite element method,indicating a good agreement between the simulation results and the measured results;the acceleration response characteristics of the coupled system were analysed in detail,and the ride quality of the vehicle was assessed by Sperling index.Finally,the frequency distribution characteristics of the coupled system were discussed.All these test results could provide references for model validation and optimized design of medium–low-speed maglev transport systems.

关 键 词：Medium–low-speed maglev Vehicle–turnout coupled system Field test Vibration characteristics Ride quality 

分 类 号：U266.4[机械工程—车辆工程] U213.6[交通运输工程—载运工具运用工程]