Rapidly converging multichannel controllers for broadband noise and vibrations


Berkhoff, A.P. (2010) Rapidly converging multichannel controllers for broadband noise and vibrations. In: 39th International Congress on Noise Control Engineering, InterNoise 2010, 13-16 June 2010, Lisbon, Portugal (pp. pp. 1-10).

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Abstract:Applications are given of a preconditioned adaptive algorithm for broadband multichannel active noise control. Based on state-space descriptions of the relevant transfer functions, the algorithm uses the inverse of the minimum-phase part of the secondary path in order to improve the speed of convergence. A further improvement of the convergence rate is obtained by using double control filters for elimination of adaptation loop delay. Regularization was found to be essential for robust operation. The particular regularization technique preserves the structure to eliminate the adaptation loop delay. Depending on the application at hand, a number of extensions are used for this algorithm, such as for applications with rapidly changing disturbance spectra, applications with large parametric uncertainty, applications with control of time-varying acoustic energy density.
Item Type:Conference or Workshop Item
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/75936
Conference URL:http://www.internoise2010.org/
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