Abstract:
GBFLMS algorithm is posed to improve the stability and
performance on noise reduction of adaptive noise control (ANC)
system. Theoretical analysis shows that stability and precision
in convergence of FLMS algorithm can be improved by GBFLMS. By
iterative calculation of back-adjusting gradient, the
calculating operation of GBFLMS can be nearly the same as that
of FLMS. An ANC system with GBFLMS has good behavior for noise
reduction of compressor chamber on refrigerator. At the port of
heat dissipation, noise level has been reduced 20 dB, about
double of that got by the system with FLMS.
Key words: Noise Control Adaptability Refrigerator
*
This project
is supported by National Natural Science Foundation of China. Manuscript
received on March 15, 1996; revised manuscript April 5, 1997
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