Vibration characteristics of a multi-block high-temperature superconducting maglev system

作     者：Zhifang FU Lifeng ZHAO Xing LIANG 

作者机构：Key Laboratory of Magnetic Levitation Technologies and Maglev Trains(Ministry of Education of China)Superconductivity and New Energy R&D CenterSouthwest Jiaotong UniversityChengdu 610031China 

出 版 物：《Journal of Modern Transportation》 (现代交通学报（英文版）)

年 卷 期：2012年第20卷第2期

页      面：98-102页

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 080203[工学-机械设计及理论] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 0814[工学-土木工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0823[工学-交通运输工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the PCSIRT of the Ministry of Education of China (No. IRT0751) the National High Technology Research and Development Program of China (863 Program: No. 2007AA03Z203) the National Natural Science Foundation of China (Nos.50588201 and 50872116) the Research Fund for the Doctoral Program of Higher Education of China (No.SRFDP200806130023) the Fundamental Research Funds for the Central Universities (Nos. SWJTU09BR152, SWJTU09ZT24 and SWJTU11CX073) 

主　　题：high-temperature superconductor vibration characteristics maglev system 

摘      要：The multi-block high-temperature superconducting （HTS） maglev system has more complicated dynamic characteristics than the single-block HTS maglev system. To study its vibration characteristics, we designed a maglev measurement system. The system responses at the excitation frequencies of 2, 3 and 15 Hz were examined. Results show that the responses under excitation frequencies of 2 and 3 Hz include a 6 Hz component, which means that the maglev system is a critical nonlinear system. Moreover, the 6 Hz component is much stronger than the 2 Hz or 3 Hz components in the response spectra. There is the interaction between excitation and response. Under an excitation frequency of 15 Hz, intensified low-frequency perturbations were observed.