Magnetic bearings are widely applied in High Temperature Gas-cooled Reactor (HTGR) and auxiliary bearings are important backup and safety components in AMB systems. The dynamic analysis of the AMB rotors touchdown process is an important foundation for designing auxiliary bearings. In this paper, a data-based dynamic analysis of the touchdown process is proposed. The dynamic model of the touchdown process is firstly established and then the nonlinear extended Kalman filtering technique is applied. Based on the dynamic model and Kalman filtering technique, the proposed method can offer estimations of rotor’s displacements, velocities and accelerations from noisy observations. The proposed method is validated by the experiment data from touchdown experiments. The touchdown experiments are performed on an experimental system with a 440kg heavy rotor, the rotational speed in the experiments is 5000RPM and no brake is applied.
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2014 22nd International Conference on Nuclear Engineering
July 7–11, 2014
Prague, Czech Republic
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-4589-9
PROCEEDINGS PAPER
Dynamic Behavior Analysis of Touchdown Process in Active Magnetic Bearing System Based on Kalman Filtering
Jingjing Zhao,
Jingjing Zhao
Tsinghua University, Beijing, China
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Guojun Yang,
Guojun Yang
Tsinghua University, Beijing, China
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Zhengang Shi
Zhengang Shi
Tsinghua University, Beijing, China
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Zhe Sun
Tsinghua University, Beijing, China
Xiao Kang
Tsinghua University, Beijing, China
Jingjing Zhao
Tsinghua University, Beijing, China
Guojun Yang
Tsinghua University, Beijing, China
Zhengang Shi
Tsinghua University, Beijing, China
Paper No:
ICONE22-30058, V001T03A002; 7 pages
Published Online:
November 17, 2014
Citation
Sun, Z, Kang, X, Zhao, J, Yang, G, & Shi, Z. "Dynamic Behavior Analysis of Touchdown Process in Active Magnetic Bearing System Based on Kalman Filtering." Proceedings of the 2014 22nd International Conference on Nuclear Engineering. Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Plant Systems, Structures and Components; Codes, Standards, Licensing and Regulatory Issues. Prague, Czech Republic. July 7–11, 2014. V001T03A002. ASME. https://doi.org/10.1115/ICONE22-30058
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