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Title: The disturbance rejection of magnetically suspended inertially stabilized platform
Authors: Guo, Q
Liu, G
Xiang, B 
Liu, H
Wen, T
Keywords: Coupling torque
Cross feedback
Disturbance observer (DOB)
Magnetically suspended inertially stabilized platform (MSISP)
Issue Date: 2018
Publisher: SAGE Publications
Source: Transactions of the Institute of Measurement and Control, 2018, v. 40, no. 2, p. 565-577 How to cite?
Journal: Transactions of the Institute of Measurement and Control 
Abstract: In a magnetically suspended inertially stabilized platform, the yaw gimbal is suspended by the magnetic bearing, which can effectively isolate the external vibrations and disturbances. However, coupling torques and disturbance torques among gimbals still exist. Therefore, based on the cross feedback compensation, the output angles of gimbals are introduced as feedback variables, and the inverse coordinate transformation matrix is designed to compensate for the coupling torques. Furthermore, a disturbance observer is applied to inhibit the disturbance torque and simulations indicate that the disturbance observer can accurately estimate the disturbance torque. Consequently, the experimental results demonstrate that the cross feedback compensation can inhabit the coupling torques, and the disturbance observer greatly suppresses the external disturbance torques and improves the angular displacement precision of gimbals.
ISSN: 0142-3312
EISSN: 1477-0369
DOI: 10.1177/0142331216661623
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