Suppression of Gyroscopic Torque Disturbance in High Speed Magnetically Levitated Rigid Rotor Systems Based on Extended State Observer

The gyroscopic torque disturbances generated by base motion directly affects the stability of the high speed magnetically levitated centrifugal compressor (MLCC). This article explores a disturbance suppression method for the high-speed magnetically levitated rotor (MLR) system based on improved lin...

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Bibliographic Details
Published in:IEEE/ASME transactions on mechatronics 2023-06, Vol.28 (3), p.1-11
Main Authors: Wang, Can, Le, Yun, Zheng, Shiqiang, Han, Bangcheng, Dong, Baotian, Chen, Qi
Format: Article
Language:English
Subjects:
Centrifugal compressors
Compensators
Disturbances
Gain compensator
gyroscopic torque disturbances
High speed
linear extended state observer (LESO)
magnetic bearing
Magnetic bearings
Motion stability
Notch filters
Rigid rotors
State observers
Torque
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Summary:The gyroscopic torque disturbances generated by base motion directly affects the stability of the high speed magnetically levitated centrifugal compressor (MLCC). This article explores a disturbance suppression method for the high-speed magnetically levitated rotor (MLR) system based on improved linear extended state observer (LESO). Firstly, the model of the high-speed MLR system with base motion is established, and the characteristics of the gyroscopic torque disturbance are analyzed. Then, a LESO with adaptive notch filter is designed for disturbance estimation and compensation of the magnetic bearing, and its convergence performance and disturbance tracking speed are deduced. Furthermore, due to the gain attenuation introduced by LESO, an innovative gain compensator is utilized to improve controller dynamic performance. Finally, simulation and experimental results demonstrate that the proposed method can effectively reject the gyroscopic torque disturbances in high speed MLCC.
ISSN:1083-4435
1941-014X
DOI:10.1109/TMECH.2022.3224391