- 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: | JIN Chaowu, CAO Yingqing, ZHOU Jin, YE Zhoucheng, XIN Yu. Anti-Disturbance Performance of Maglev Rotor Using Model Assisted Extended State Observer[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20220803
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With the increase in sinusoidal disturbance frequency, the performance of extended state observers (ESOs) will decrease. In order to improve the disturbance suppression ability of the ESO in the maglev rotor system, firstly, the mathematical model of a one-degree-of-freedom (1-DOF) maglev bearing rotor system was built. Secondly, ESO was designed, and the reasons for its reduced disturbance suppression effects were analyzed. On this basis, a model assisted ESO (MESO) was proposed to improve the bandwidth configuration and enhance the disturbance suppression effects. Then, the stability of the active disturbance rejection controller based on MESO was analyzed in the frequency domain. The effectiveness of the proposed observer was finally verified through simulation and experiments. The research results indicate that an increase in bandwidth amplifies the impact of system noises and increases the control voltage of the system. As the disturbance frequency increases, the suppression effect of MESO on high-frequency sinusoidal disturbance will decrease, but it can still reduce the modal amplitude of the rotor. After applying fundamental harmonic disturbance of 10 Hz−2 mm and fundamental impulse disturbance of 1
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