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A multiobjective adaptive controller for magnetic bearing systems
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Sahinkaya, M. Necip, Abulrub, Abdul-Hadi G., Burrows, C. R. (Clifford Robert) and Keogh, Patrick S. (2010) A multiobjective adaptive controller for magnetic bearing systems. Journal of Engineering for Gas Turbines and Power, Volume 132 (Number 12). article no. 122503 . doi:10.1115/1.4001060 ISSN 0742-4795.
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Official URL: http://dx.doi.org/10.1115/1.4001060
Abstract
The paper considers three issues in flexible rotor and magnetic bearing systems, namely the control of rotor vibration, control of transmitted forces, and prevention of rotor contact with auxiliary bearings. An adaptive multiobjective optimization method is developed to tackle these issues simultaneously using a modified recursive adaptive controller The proposed method involves automatic tuning of the weighting parameters in accordance with performance specifications. A two-stage weighting strategy is implemented, involving base weightings, calculated from a singular value decomposition of the system's receptance matrices, and two adjustable weighting parameters to shift the balance between the three objective functions. The receptance matrices are functions of rotational speed and they are estimated in situ. The whole process does not require prior knowledge of the system parameters. Real-time implementation of the proposed controller is explained and tested by using an experimental flexible rotor magnetic bearing system. The rotor displacements were measured relative to the base frame using four pairs of eddy current displacement transducers. System stability is ensured through local PID controllers. The proposed adaptive controller is implemented in parallel, and the effectiveness of the weighting parameters in changing the balance between the transmitted forces and rotor vibrations is demonstrated experimentally. [DOI: 10.1115/1.4001060]
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TJ Mechanical engineering and machinery | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Library of Congress Subject Headings (LCSH): | Magnetic bearings, Adaptive control systems | ||||
Journal or Publication Title: | Journal of Engineering for Gas Turbines and Power | ||||
Publisher: | ASME International | ||||
ISSN: | 0742-4795 | ||||
Official Date: | December 2010 | ||||
Dates: |
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Volume: | Volume 132 | ||||
Number: | Number 12 | ||||
Number of Pages: | 7 | ||||
Page Range: | article no. 122503 | ||||
DOI: | 10.1115/1.4001060 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||
Grant number: | GR/S64448/01 (EPSRC) |
Data sourced from Thomson Reuters' Web of Knowledge
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