- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | GUAN Xudong, ZHOU Jin, JIN Chaowu, YAO Runhui. Misalignment Vibration Detection of Magnetic Suspension Multi-Span Rotors Based on SOGI-FLL-WPF[J]. Journal of Southwest Jiaotong University, 2022, 57(3): 665-674. doi: 10.3969/j.issn.0258-2724.20210810
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Aiming at misalignment vibration detection of magnetic suspension multi-span rotors, the dynamic model of magnetic suspension rotor system and coupling misalignment model are firstly established. Secondly, the rotor misalignment vibration state is simulated based on the multi-span rotors mechanics model, and the speed of vibration signal is identified by second order generalized integrator-frequency locked loop (SOGI-FLL). Furthermore, the speed identification information is input to SOGI for co-frequency notch filtering, and then misalignment vibration detection of magnetic multi-span rotors is performed on the notch signal by SOGI-FLL with prefilter (SOGI-FLL-WPF). Finally, the feasibility of the proposed detection method is verified by the simulation of magnetic suspension multi-span rotors at constant and ascending speeds. The experimental results show that the amplitude and frequency of the vibration signal at double speed frequency caused by rotor misalignment can be quickly identified, which lays a foundation for the application of magnetic suspension multi-span equipment.
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