Projects per year
Abstract
This paper describes a novel application of the realtime wavelet transform in the control of rotor vibration. Vibration signal wavelet coefficients that relate to different time scales provide direct information on the system dynamic state, and can thus be used for feedback in a closedloop control strategy that attenuates both transient and steadystate vibration components. Control force signals are synthesized from basis functions having a characteristic frequency and spacing interval closely matched to the rotational frequency. The control signal basis coefficients are generated by integral feedback of the wavelet coefficients such that under steadystate conditions the control forces eliminate measured rotor vibration. The controller synthesis problem is solved by iterative solution of a linear matrix inequality to obtain a gain matrix that satisfies H.. normbound specifications for transient vibration attenuation. It is demonstrated experimentally that wavelet coefficients from multiple scale levels can be used in direct feedback to reduce levels of transient vibration caused by instantaneous changes in unbalance.
Original language  English 

Pages (fromto)  167184 
Journal  Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 
Volume  220 
Issue number  2 
DOIs  
Publication status  Published  2006 
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Projects
 1 Finished

PLATFORM GRANT: CENTRE FOR POWER TRANSMISSION AND MOTION CO NTROL
Burrows, C., Bowen, C., Bowyer, A., Edge, K., Hawley, G., Johnston, N., Keogh, P., Ngwompo, R., Sahinkaya, M. N. & Tilley, D.
Engineering and Physical Sciences Research Council
1/05/04 → 30/04/09
Project: Research council