Title: | Active noise cancellation for a three-dimensional enclosure by using multiple-channel adaptive control and H infinity control |
Authors: | Bai, MR Lin, Z 機械工程學系 Department of Mechanical Engineering |
Issue Date: | 1-Oct-1998 |
Abstract: | Active noise control (;WC) techniques for a three-dimensional enclosure are compared in terms of two control structures and two control algorithms. The multiple-channel filtered-x least-mean-square (FXLMS) algorithm and the H-infinity robust control algorithm are employed for controller synthesis. Both feedforward and feedback control structures are compared. The Youla's parameterization is employed in the formulation of the multiple-channel feedback FXLMS algorithm. The algorithms are implemented using a floating-point digital signal processor (DSP), Experiments are carried out to validate the ANC approaches for, attenuation of the internal field in a rectangular wooden box Position and number of actuators and sensors are also investigated. A broadband random noise and an engine noise are chosen as the primary noises in the experiments. The experimental results indicate that the feedforward structure yields a broader band of attenuation than the feedback structure. The FXLMS control and H-infinity control achieve comparable performance. |
URI: | http://hdl.handle.net/11536/31852 |
ISSN: | 1048-9002 |
Journal: | JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME |
Volume: | 120 |
Issue: | 4 |
Begin Page: | 958 |
End Page: | 964 |
Appears in Collections: | Articles |
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