Rapidly converging multichannel controllers for broadband noise and vibrations
conference paper
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.
Topics
Active noise and vibration controlAdaptive controlEnergy density controlTimevarying systemsAcoustic energyActive noise and vibration controlsAdaptive ControlBroadband noiseControl filtersConvergence ratesLoop delayMinimum phaseMulti-channelMultichannel active noise controlParametric uncertaintiesRegularization techniqueRobust operationSecondary pathsSpeed of convergenceState-space descriptionTime varyingAdaptive algorithmsAcoustic variables control
TNO Identifier
466474
ISBN
9781617823961
Publisher
The Institute of Noise Control Engineering of the USA
Source title
39th International Congress on Noise Control Engineering 2010, INTER-NOISE 2010, 13 June 2010 through 16 June 2010, Lisbon, Portugal
Collation
10 p.
Place of publication
Washington,DC
Pages
4558-4567
Files
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