Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Modeling and Validation of 3DOF Dynamics of Maglev Vehicle Considering Guideway

궤도 선형을 고려한 자기부상 열차의 3자유도 동역학 모델 수립 및 검증

  • Park, Hyeon-cheol (Department of Mechatronics Engineering, Chungam National University) ;
  • Noh, Myounggyu (Department of Mechatronics Engineering, Chungam National University) ;
  • Kang, Heung-Sik (Center for Urban Maglev Program, Korea Institute of Machinery and Materials) ;
  • Han, Hyung-Suk (Department of Magnetic Levitation and Linear Drive, Korea Institute of Machinery and Materials) ;
  • Kim, Chang-Hyun (Department of Magnetic Levitation and Linear Drive, Korea Institute of Machinery and Materials) ;
  • Park, Young-Woo (Department of Mechatronics Engineering, Chungam National University)
  • 박현철 (충남대학교 메카트로닉스 공학과) ;
  • 노명규 (충남대학교 메카트로닉스 공학과) ;
  • 강흥식 (한국기계연구원 도시형자기부상열차연구단) ;
  • 한형석 (한국기계연구원 자기부상연구실) ;
  • 김창현 (한국기계연구원 자기부상연구실) ;
  • 박영우 (충남대학교 메카트로닉스 공학과)
  • Received : 2016.07.22
  • Accepted : 2016.09.30
  • Published : 2017.01.01
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Abstract

Magnetically levitated (Maglev) vehicles maintain a constant air gap between guideway and car bogie, and thereby achieves non-contact riding. Since the straightness and the flatness of the guideway directly affect the stability of levitation as well as the ride comfort, it is necessary to monitor the status of the guideway and to alert the train operators to any abnormal conditions. In order to develop a signal processing algorithm that extracts guideway irregularities from sensor data, virtual testing using a simulation model would be convenient for analyzing the exact effects of any input as long as the model describes the actual system accurately. Simulation model can also be used as an estimation model. In this paper, we develop a state-space dynamic model of a maglev vehicle system, running on the guideway that contains jumps. This model contains not only the dynamics of the vehicle, but also the descriptions of the power amplifier, the anti-aliasing filter and the sampling delay. A test rig is built for the validation of the model. The test rig consists of a small-scale maglev vehicle, tracks with artificial jumps, and various sensors measuring displacements, accelerations, and coil currents. The experimental data matches well with those from the simulation model, indicating the validity of the model.

Keywords

References

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