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Studies on Frequency Response Characteristics of High-Speed Railway Train End Relationship Test System with Flexible Bases

Author

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  • Zhiqiang Zhang

    (State Key Laboratory of Robotics and System, School of Mechatronics Engineering, Harbin Institute of Technology, West Dazhi Street No. 92, Harbin 150000, China)

  • Dacheng Cong

    (State Key Laboratory of Robotics and System, School of Mechatronics Engineering, Harbin Institute of Technology, West Dazhi Street No. 92, Harbin 150000, China)

  • Zhidong Yang

    (State Key Laboratory of Robotics and System, School of Mechatronics Engineering, Harbin Institute of Technology, West Dazhi Street No. 92, Harbin 150000, China)

  • Yunfei Cai

    (State Key Laboratory of Robotics and System, School of Mechatronics Engineering, Harbin Institute of Technology, West Dazhi Street No. 92, Harbin 150000, China)

  • Junwei Han

    (State Key Laboratory of Robotics and System, School of Mechatronics Engineering, Harbin Institute of Technology, West Dazhi Street No. 92, Harbin 150000, China)

Abstract

A train end relationship test system was installed with a Stewart parallel robot on the reaction bases perpendicular to the ground, to test the fatigue and durability of train end relationship components, such as the transfixion way of a high-speed railway train. The flexibility of the reaction bases affected the test accuracy of the train end relationship components within a test frequency band range. In this paper, a coupling characteristic model was established between the flexible bases and the parallel robot. Then, the analytical relationship was analyzed between the natural frequency of the bases and the natural frequency of the parallel robot. Moreover, a design criterion was proposed for the natural frequency of the reaction bases. It was considered that when the natural frequency of the bases was not less than five times the natural frequency of the parallel robot, the influence of the flexibility of the bases on the test accuracy can be ignored. The validity of the design criterion was verified by the simulation results.

Suggested Citation

  • Zhiqiang Zhang & Dacheng Cong & Zhidong Yang & Yunfei Cai & Junwei Han, 2021. "Studies on Frequency Response Characteristics of High-Speed Railway Train End Relationship Test System with Flexible Bases," Energies, MDPI, vol. 14(19), pages 1-13, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:19:p:6147-:d:644066
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    References listed on IDEAS

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    1. Moshe Givoni, 2006. "Development and Impact of the Modern High‐speed Train: A Review," Transport Reviews, Taylor & Francis Journals, vol. 26(5), pages 593-611, January.
    2. Chenyang Zhang & Hongzhou Jiang, 2021. "Rigid-Flexible Modal Analysis of the Hydraulic 6-DOF Parallel Mechanism," Energies, MDPI, vol. 14(6), pages 1-11, March.
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