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Rotor/active magnetic bearing transient control using wavelet predictive moderation


Reference:

Cade, I. S., Keogh, P. S. and Sahinkaya, M. N., 2007. Rotor/active magnetic bearing transient control using wavelet predictive moderation. Journal of Sound and Vibration, 302 (1-2), pp. 88-103.

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Abstract

A novel method for predicting the ultimate steady-state vibration amplitudes from measured transient responses in multi-input, multi-output flexible rotor/magnetic bearing systems is presented. The technique is based around a multi-level wavelet coefficient analysis with in-built transient system dynamics. The relation between an input disturbance wavelet coefficient acting on the system and a measured vibration wavelet coefficient is identified theoretically for non-identical wavelets. A controller is formulated in the wavelet coefficient domain with control forces derived from proportional feedback of displacement wavelet coefficients. Improved transient performance is achieved using wavelet coefficient steady-state prediction to moderate the control signal. Experimental validation of the controller using mass-loss tests demonstrates the manner in which transient vibration attenuation may be achieved. (c) 2006 Elsevier Ltd. All rights reserved.

Details

Item Type Articles
CreatorsCade, I. S., Keogh, P. S. and Sahinkaya, M. N.
DOI10.1016/j.jsv.2006.11.005
DepartmentsFaculty of Engineering & Design > Mechanical Engineering
RefereedYes
StatusPublished
ID Code1675
Additional InformationID number: ISI:000244649400006

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