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Experiments on the Transient Performance of an Adaptive Multi-Objective Controller for Rotating Machinery

[+] Author Affiliations
M. Necip Sahinkaya, Patrick S. Keogh, Clifford R. Burrows

University of Bath, Bath, UK

Abdul-Hadi G. Abulrub

University of Warwick, Coventry, UK

Paper No. GT2010-23482, pp. 399-408; 10 pages
doi:10.1115/GT2010-23482
From:
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 6: Structures and Dynamics, Parts A and B
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4401-4 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME

abstract

The paper describes an experimental assessment of the transient performance of a multi-objective adaptive approach to the control of flexible rotors previously presented by the authors. The approach is applicable to any form of controllable bearings or actuators. In the case reported here, the rotor is supported by active magnetic bearings (AMBs). The theory underlying the controller is outlined: the objectives include minimization of the forces transmitted to the base while restricting rotor vibrations to a user-defined limit. A third objective is to prevent rotor contact with the auxiliary bearings used to protect the active elements. These three objectives are met by a two-stage weighting strategy followed by the adaptive control of two parameters that automatically and continuously adjust the weightings of individual objective functions to satisfy user defined performance criteria.

Copyright © 2010 by ASME

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